JP2015197188A - friction damper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress a third pressure plate from rotating on a shaft member, such as a bolt for applying press force, as a center axis in a friction damper having the third pressure plate.SOLUTION: There is provided a friction damper which is arranged between a pair of members and suppresses a relative movement with a friction force in sliding accompanying the relative movement, and the friction damper comprises a third pressure plate which holds a first pressure plate provided for one of the pair of members together with a second pressure plate provided for the other, and a shaft member which is inserted into through holes formed therein. A plurality of third pressure plates are provided side by side on one surface of the first pressure plate, one of two adjacent third pressure plates among the plurality of third pressure plates has a projection part projecting from the one third pressure plate to the side of the other third pressure plate, and the other has a recessed part in which the projection part is put, so that when the two adjacent third pressure plates are to rotate on the shaft member respectively, the projection part and recessed part engage each other to suppress the third pressure plates from mutually rotating.

Description

  The present invention relates to a friction damper that suppresses vibration of a structure such as a building frame.

  A friction damper is known as a device for attenuating vibration of a structure such as a building frame. The friction damper is used, for example, by being interposed between a pair of members that reciprocally move relative to each other when the building frame vibrates.

  As an example of such a friction damper, Patent Document 1 discloses a friction damper 110 as shown in FIGS. 1 and 2. 1 is a schematic elevation view of the building frame 1, and FIG. 2 is a sectional view taken along line XX in FIG.

  As shown in FIG. 1, the friction damper 110 includes a first pressure contact plate 11 provided on one member 51 of the pair of members 51 and 52 of the building frame 1, and the same pair of members 51 and 52. The second pressure contact plate 21 provided on the other member 52 (in the example of FIG. 1, the other member 52 also serves as the second pressure contact plate 21) and the second pressure contact plate 21 form the first pressure contact plate 11. And a third press contact plate 31 sandwiched from both sides. As shown in FIG. 2, the first pressure contact plate 11 is provided with a first through hole 13 that is long in a predetermined direction, the second pressure contact plate 21 is provided with a second circular through hole 23, and the third The pressure contact plate 31 is also provided with a third circular through hole 33 having a regular circular shape. A bolt 41b is inserted through all of the through holes 13, 23, 33, and a nut 41n is screwed to the bolt 41b. The first to third pressure plates 11, 21, 31 are pressed against each other with a predetermined pressure force.

According to the friction damper 110, when the second pressure contact plate 21 slides with respect to the first pressure contact plate 11 due to the vibration of the building frame 1, the bolt 41 b and the second through hole of the second pressure contact plate 21. 23, and the force Fp in the sliding direction is transmitted from the second pressure contact plate 21 to the third pressure contact plate 31 through the engagement with the bolt 41b and the third through hole 33, thereby The third press contact plate 31 also slides relative to the first press contact plate 11 in conjunction with the second press contact plate 21. As a result, in addition to the sliding frictional force of the second pressing plate 21 against the first pressing plate 11, the sliding frictional force of the third pressing plate 31 against the first pressing plate 11 is further generated. A large frictional force can be generated.
Japanese Patent No. 5076874

  By the way, in the friction damper 110, as shown in FIG. 1, there is a possibility that the third press-contact plate 31 rotates around the bolt 41b as the central axis C31. There was a risk of problems.

  The present invention has been made in view of such a conventional problem, and is to suppress the rotation of the third press contact plate about a shaft member such as a bolt used for applying a press contact force as a central axis.

In order to achieve this object, the friction damper shown in claim 1 is:
A friction damper that is disposed between a pair of members that move relative to each other in a predetermined direction in the structure, and that suppresses the relative movement by the frictional force between the pressure plates that slide with the relative movement,
A first pressure contact plate provided on one member of the pair of members and having a first through hole long in the predetermined direction;
A second pressure contact plate provided on the other member of the pair of members and having a second through hole;
A third press-contact plate having a third through hole sandwiched between the first press-contact plate and the second press-contact plate with a predetermined press-contact force from both sides;
A shaft member provided through the first through-hole, the second through-hole, and the third through-hole to provide the pressure contact force;
The first through hole allows the second pressure contact plate to slide in the predetermined direction relative to the first pressure contact plate, and the third pressure contact plate moves relative to the first pressure contact plate along with the sliding. In order to slide in the predetermined direction, the sliding force is applied from the second pressure contact plate to the third through the engagement of the shaft member with the second through hole and the third through hole. Transmitted to the pressure plate,
A plurality of third press contact plates are provided side by side on one of the two surfaces of the first press contact plate, and the shaft member, the second through hole, and the third are provided for each third press contact plate. Each through hole is provided,
Of the plurality of third pressure-contact plates, two adjacent third pressure-contact plates are such that one of the third pressure-contact plates protrudes from the one third pressure-contact plate toward the other third pressure-contact plate. The third pressure contact plate on the other side has a concave portion into which the convex portion enters,
When the two third pressure-contact plates try to rotate around the corresponding shaft members, the convex portions and the concave portions engage with each other, so that the two adjacent third pressure-contact plates are The rotations of each other are suppressed.

  According to such a friction damper, when the two third press contact plates adjacent in a predetermined direction try to rotate around the corresponding shaft member, the convex portion of one third press contact plate and the other Since the recesses provided in the three pressure contact plates engage with the concave portions into which the convex portions enter and suppress the rotation of each other, the rotation of the third pressure contact plate can be suppressed.

Further, the friction damper is disposed between a pair of members that relatively move in a predetermined direction in the structure, and suppresses the relative movement by a frictional force between the press contact plates that slide with the relative movement,
A first press-contact plate having a first through-hole that is provided in a pair in a direction intersecting the predetermined direction on one member of the pair of members and has a first through hole long in the predetermined direction;
A second pressure-contact plate provided on the other member of the pair of members and having a second through hole corresponding to the first through hole;
A pair of third press contact plates which are provided corresponding to each of the first press contact plates by sandwiching the first press contact plate with a predetermined press contact force from both sides together with the second press contact plate;
A shaft member that is provided for each of the third press contact plates through the first through hole, the second through hole, and the third through hole in order to apply the press contact force;
The first through hole allows the second pressure contact plate to slide in the predetermined direction relative to the first pressure contact plate, and the third pressure contact plate moves relative to the first pressure contact plate along with the sliding. In order to slide in the predetermined direction, the sliding force is applied from the second pressure contact plate to the third through the engagement of the shaft member with the second through hole and the third through hole. Transmitted to the pressure plate,
The two third press contact plates through which the two shaft members respectively inserted through the pair of first press contact plates are inserted are arranged in a direction crossing the predetermined direction, and one of the first press contacts is provided. The three pressure-contact plates have a convex portion protruding from the one third pressure-contact plate to the other third pressure-contact plate side, and the other third pressure-contact plate has a concave portion into which the convex portion enters,
When the two third pressure-contact plates try to rotate around the corresponding shaft members, the convex portions and the concave portions engage with each other, so that the two adjacent third pressure-contact plates are The rotations of each other are suppressed.

  According to such a friction damper, when the two third press contact plates adjacent to each other in the direction crossing the predetermined direction try to rotate around the corresponding shaft member, the convex portion of one of the third press contact plates and Since the concave portion provided in the other third press-contact plate engages with the concave portion into which the convex portion enters, the rotation of the third press-contact plate can be suppressed.

Further, the friction damper is disposed between a pair of members that relatively move in a predetermined direction in the structure, and suppresses the relative movement by a frictional force between the press contact plates that slide with the relative movement,
Two first press-contact plates provided on one member of the pair of members and facing each other;
A second pressure contact plate provided on the other member of the pair of members and interposed between the two first pressure contact plates;
A pair of third pressure plates that are provided on both sides of the second pressure plate and sandwich the first pressure plate together with the second pressure plate from both sides with a predetermined pressure force; and
A first through hole that is long in the predetermined direction of each of the first pressure plates, a second through hole of the second pressure plate, and a third through hole of each of the third pressure plates to apply the pressure force. A shaft member provided through the hole,
The first through hole allows the second pressure contact plate to slide in the predetermined direction relative to the first pressure contact plate, and the third pressure contact plate moves relative to the first pressure contact plate along with the sliding. In order to slide in the predetermined direction, the sliding force is applied from the second pressure contact plate to the third through the engagement of the shaft member with the second through hole and the third through hole. Transmitted to the pressure plate,
A plurality of the pair of third press-contact plates, the shaft member, and the second through hole are provided side by side in the predetermined direction,
The two third pressure plates adjacent to each other in the predetermined direction on each surface side of the second pressure plate are such that one of the third pressure plates is from the third pressure plate to the other of the third pressure plates. A convex portion projecting toward the pressure plate, and the other third pressure plate has a concave portion into which the convex portion enters,
When the two third pressure contact plates try to rotate around the inserted shaft member, the protrusions and the recesses engage with each other, so that the two adjacent third pressure contact plates are Are characterized by mutually suppressing rotation.

  According to such a friction damper, since each of the first pressure contact plates has a plurality of third pressure contact plates, the third pressure contact plates provided on each surface side of the first pressure contact plates Each can suppress rotation.

Further, the friction damper is disposed between a pair of members that move relative to each other in a predetermined direction in the structure, and suppresses the relative movement by a frictional force between the pressure contact plates that slide with the relative movement,
Two first press-contact plates provided on one member of the pair of members and facing each other;
A second pressure contact plate provided on the other member of the pair of members and interposed between the two first pressure contact plates;
Two third pressure plates that are provided on both sides of the second pressure plate and sandwich the first pressure plate together with the second pressure plate from both sides with a predetermined pressure force; and
In order to apply the pressure contact force, the first pressure contact plate is inserted through the first through hole long in the predetermined direction, the second pressure contact plate second through hole, and the third pressure contact plate third through hole. A shaft member provided,
The first through hole allows the second pressure contact plate to slide in the predetermined direction relative to the first pressure contact plate, and the third pressure contact plate moves relative to the first pressure contact plate along with the sliding. In order to slide in the predetermined direction, the sliding force is applied from the second pressure contact plate to the third through the engagement of the shaft member with the second through hole and the third through hole. Transmitted to the pressure plate,
The two first pressure-contact plates, the two third pressure-contact plates, the shaft member, and the second through hole are provided in pairs in the crossing direction that intersects the predetermined direction, respectively.
The third press contact plate that is provided on one surface side of the second press contact plate and forms the pair aligned in the intersecting direction is configured such that one of the third press contact plates is different from the one third press contact plate to the other of the second press contact plates. A convex portion projecting toward the three pressure contact plate side, and the other third pressure contact plate has a concave portion into which the convex portion is inserted, and the convex portion when each of the third pressure contact plates tries to rotate around the corresponding shaft member. And the recesses engage with each other, so that the two adjacent third press-contact plates mutually suppress rotation,
Each of the third pressure-contact plates extends in a direction intersecting the predetermined direction so as to protrude from the first pressure-contact plate and the second pressure-contact plate, and the extension portion has a fourth penetration. With holes,
A single insertion member is inserted into the fourth through hole of the third pressure contact plate provided on both surfaces of the second pressure contact plate, and is provided on the other surface side of the second pressure contact plate. The rotation of the third press contact plate is suppressed.

  According to such a friction damper, even if it is a friction damper having a third pressure contact plate on both sides of the first pressure contact plate, the convexity of adjacent third pressure contact plates on one surface side of the first pressure contact plate. Rotation is suppressed by engaging the portion and the recess, and on the other surface side of the first pressure contact plate, a third pressure contact member on one surface side and a third pressure contact plate on the other surface side are respectively provided. The rotation of the third press-contact plate on the other surface side can be suppressed by the single insertion member inserted through the fourth through hole. For this reason, since the rotation of the third pressure contact plate on the other surface side can be suppressed only by inserting the insertion member, it is easy to process the third pressure contact plate and to suppress rotation with respect to the third pressure contact plate.

Such a friction damper,
The plurality of third pressure plates are provided with the convex portions and the concave portions at portions where a pair of adjacent third pressure plates are opposed to each other, or portions opposite to other third pressure plates or other pressure plates. The parts facing each other are arranged close to each other.

  According to such a friction damper, when the convex part provided in the site | part which an adjacent 3rd press-contacting plate opposes into a recessed part, it has the same clearance gap and does not have a convex part and a recessed part. The amount of rotation is smaller than that of the third pressure plate in which the end portions of the shape are opposed to each other. For this reason, if a pair of adjacent third pressure contact plates among the plurality of third pressure contact plates are engaged with the convex portions and the concave portions, all the third pressure contact plates are opposed to each other with linear end portions. It is possible to reduce the amount of rotation compared with the case where it is done. For this reason, since processing of a convex part and a recessed part decreases, even if manufacture is easy, it is possible to suppress rotation of a 3rd press-contact board.

Such a friction damper,
The shaft member includes a bolt member and a pipe member that is provided through the first through hole, the second through hole, and the third through hole while inserting the bolt member inward. Features.

  According to such a friction damper, both the second pressure contact plate and the third pressure contact plate that move relative to each other while sliding with the first pressure contact plate without affecting the pressure contact force of the bolt member are combined with the first member. By making the relative movement to generate a frictional force, it is possible to suppress the rotation with respect to the third press contact plate.

  According to the friction damper according to the present invention, it is possible to suppress the rotation of the third press contact plate about the shaft member such as a bolt used for applying the press contact force as the central axis.

It is a schematic elevation view of the building frame provided with the conventional friction damper. It is XX sectional drawing in FIG. It is a schematic elevation view of the column beam frame which is a building frame provided with the friction damper of the first embodiment. It is YY sectional drawing in FIG. It is sectional drawing which shows the structure of a press-contact unit. 6A, 6B, 6C, and 6D are respectively an AA arrow view, a BB arrow view, a CC arrow view, and a DD arrow view in FIG. It is a schematic sectional drawing at the time of forming the 2nd through-hole 23 of the 2nd press-contacting plate 21 in a long hole long in a brace spanning direction. It is a vibration energy absorption history characteristic of a friction damper. It is a figure which shows the difference in the rotation angle by the shape of the site | part which an adjacent 3rd press-contacting plate opposes. FIG. 10A is an enlarged view of A1 in FIG. 9 showing a gap between adjacent third press contact plates in the installed state, and FIG. 10B is a rotation angle θ1 when the linearly opposed third press contact plate rotates in the same direction. FIG. FIG. 11A is an enlarged view of B1 in FIG. 9 showing a gap between adjacent third press contact plates in the installed state, and FIG. 11B shows a rotation angle θ2 when the concave and convex third press contact plate rotates in the same direction. FIG. It is a figure which shows the modification of an uneven | corrugated type 3rd press-contact board. It is sectional drawing which shows the structure of the friction damper by which a 3rd press-contact board is each provided in the both surfaces side of a 2nd press-contact board. It is a front view which shows the friction damper provided in the flange part of H-shaped steel. It is an EE arrow line view in FIG. It is a top view which shows the structure which mutually suppresses rotation by two 3rd press-contacting plates adjacent in the direction which cross | intersects a brace spanning direction. It is a FF arrow line view in FIG. It is a top view which shows the structure which mutually suppresses rotation between the 3rd press-contact plates provided in the both surfaces side of a flange with rod-shaped steel materials. It is a GG arrow line view in FIG. 20A is a plan view showing a configuration in which the third press-contact plates provided on both sides of the flange are restrained from rotating by a steel plate, and FIG. 20B is an HH arrow view of FIG. 20A. It is a figure which shows the shape and arrangement | positioning of each 3rd press-contact board when five 3rd press-contact boards are provided side by side.

  FIG. 3 is a schematic elevation view of the building frame 1 provided with the friction damper 10 according to the first embodiment of the present invention. 4 is a cross-sectional view taken along the line YY in FIG. 3, and FIG. 5 is a cross-sectional view illustrating the configuration of the press contact unit 10a. Furthermore, FIG. 6A is an AA arrow view in FIG. 4, FIG. 6B is a BB arrow view in FIG. 4, FIG. 6C is a CC arrow view in FIG. 4, and FIG. , DD view. FIG. 7 is a schematic cross-sectional view when the second through hole 23 of the second press-contact plate 21 is formed as a long hole that is long in the brace extending direction.

  The friction damper 10 of the first embodiment is incorporated in an H-section steel brace 5 of a column beam frame 1 as a building frame 1. That is, the brace 5 in which the friction damper 10 is incorporated is divided at an appropriate position so as to be spaced from each other by a distance S1, thereby forming a pair of brace segments 51 and 52 (corresponding to a pair of members) as shown in FIG. These brace pieces 51 and 52 are configured to be relatively movable in the bridging direction of the brace 5 (corresponding to a predetermined direction, hereinafter also referred to as the brace bridging direction).

  As shown in FIG. 4, the friction damper 10 of the first embodiment is provided with two pressure contact units 10 a that are fastened by a high-strength bolt 41 b and a nut 41 n to generate a pressure contact force in the brace extending direction.

  Each pressure welding unit 10a uses the first pressure welding plate 11 bolted to the web 51W of one brace segment 51 via the filler plate 50, and the second pressure welding using the web 52W of the other brace segment 52 as it is. The plate 21 and the third pressure contact plates 36 and 37 are configured to be sandwiched in the thickness direction from the front and back surfaces of the first pressure contact plate 11 with a predetermined pressure contact force.

  Here, a stainless plate as an example of the sliding plate 15 is fixed to the front and back surfaces of the first pressing plate 11 so as not to move, while the second pressing plate 21 facing the sliding plates 15 and 15, and The friction plates 25 and 35 are fixed to the respective surfaces of the third press contact plates 36 and 37 so as not to move. At this time, in the two pressure contact units 10a, the first pressure contact plate 11, the second pressure contact plate 21, and the sliding plates 15 and 15 are integrated with each other over both pressure contact units 10a. The friction plates 25 and 35 are provided for each press contact unit 10a. That is, the friction damper 10 according to the first embodiment includes two third press contact plates 36 and 37 as an example of the plurality of third press contact plates 36 and 37.

  As a method for fixing the sliding plate 15 and the friction plates 25 and 35, for example, (1) a method by adhesion, (2) surface roughness increasing treatment (first pressure contact plate 11, The second press-contact plate 21, the third press-contact plates 36 and 37, the sliding plate 15 and the friction plates 25 and 35 are subjected to surface roughening, shot blasting, etc.) so that relative slip does not occur on the fixing surface. A method, (3) a method by fitting, and the like.

  On the other hand, as shown in FIG. 4, the first pressure contact plate 11, the second pressure contact plate 21, and the third pressure contact plates 36 and 37 of each pressure contact unit 10 a are respectively provided with a first through hole 13, a second through hole 23, A third through-hole 33 is formed in the plate thickness direction, and the through-holes 13, 23, 33 are skewered into a steel round pipe 47 (a pipe having a circular cross-section, which is a pipe member). Further, a high-strength bolt 41b (corresponding to a bolt member) is inserted through the round pipe 47 along the tube axis direction. And the nut 41n is screwed by the front-end | tip part of this high strength volt | bolt 41b, By these high strength volt | bolt 41b and nut 41n, the 1st press-contact plate 11 is the 2nd press-contact plate 21, the 3rd press-contact plate 36, 37 is fastened in a state of being sandwiched between the two, and the pressure contact force due to the sandwiching is applied in the thickness direction.

  Therefore, by this pressure contact force, the friction plates 25 of the second pressure contact plate 21 and the friction plates 35 of the third pressure contact plates 36 and 37 are pressed against the sliding plates 15 and 15 of the first pressure contact plate 11 in each pressure contact unit 10a. When sliding, a frictional force Ff corresponding to the pressure contact force is generated (see FIG. 5). The frictional force Ff becomes a damping force for vibration of the column beam frame 1. A disc spring 43 is interposed between the head of the high-strength bolt 41 b and the second press-contact plate 21 and between the nut 41 n and the third press-contact plates 36 and 37, and these disc springs 43. The size of the pressure contact force is stabilized by the elastic force of. However, the disc spring 43 is not an essential component and may be omitted. In this example, the round pipe 47 and the high-strength bolt 41b correspond to the “shaft member” according to the claims.

  By the way, in order to allow the above-mentioned sliding in the brace spanning direction, the first through hole 13 of the first pressure contact plate 11 is formed as a long hole along the brace spanning direction (see FIG. 6C). . That is, the second pressure contact plate 21 with respect to the first pressure contact plate 11 is associated with the relative movement of the brace segments 51 and 52 of the column beam frame 1 in the brace spanning direction by the first through holes 13 that are long holes. And the 3rd press-contact plates 36 and 37 can be slid in the brace bridging direction.

  On the other hand, the second through hole 23 of the second pressure contact plate 21 and the third through hole 33 of the third pressure contact plates 36 and 37 are formed between the round pipe 47 and the gap in the brace extending direction. S2 is smaller than the case of the first through hole 13, and the hole S2 is set to be a perfect circle having a hole diameter that is as small as possible (see FIG. 5).

  The reason for this is that in the friction damper 10, the second press against the first press contact plate 11 by the contact / engagement of the round pipe 47 with the second through hole 23 and the third through hole 33 in each press contact unit 10 a. This is because the third press contact plates 36 and 37 are also slid along with the slide of the press contact plate 21.

  Specifically, when the column beam frame 1 vibrates, as shown in FIG. 5, in the second pressure contact plate 21 as the other brace segment 52, the external force P accompanying the vibration is directly input from the column beam frame 1. Thus, the second pressure contact plate 21 slides with respect to the first pressure contact plate 11, and the friction force Ff is generated by the respective pressure contact units 10 a by this sliding, and is used as the damping force of the vibration. The three pressure contact plates 36 and 37 are not directly connected to the other brace segment 52, and therefore a force required for sliding is applied from the second pressure contact plate 21 via the round pipe 47. This is necessary.

  That is, as shown in FIG. 5, a part of the external force P acting on the second pressure contact plate 21 is a support pressure due to contact / engagement between the round pipe 47 and the inner peripheral surface of the second through hole 23. Fp is transmitted from the second pressure contact plate 21 to the round pipe 47 as Fp, and the support pressure Fp transmitted to the round pipe 47 undergoes the form of the shearing force Fs in the round pipe 47 and then the round pipe 47 and the third pipe 47. The third pressure contact plates 36 and 37 are transmitted to the third pressure contact plates 36 and 37 by contact and engagement with the inner peripheral surface of the through hole 33. As a result, the third pressure contact plates 36 and 37 are transmitted to the first pressure contact plates by the transmitted support pressure Fp. 11 slides. Along with this sliding, a frictional force Ff is generated between the third press contact plates 36 and 37 and the first press contact plate 11 and contributes to the attenuation of the vibration.

  Therefore, it is desirable that the diameters of the second through hole 23 and the third through hole 33 be as small as possible without causing a problem in passing the round pipe 47 during construction. For example, when the round pipe 47 is inserted, The clearance S2 with the round pipe 47 is preferably in the range of 0.1 to 3.0 mm in the bracing direction. If it does so, it will become possible to transmit the supporting pressure Fp required for sliding to the 3rd press-contacting plates 36 and 37 reliably, making it easy to pass the round pipe 47 at the time of construction. However, the second through hole 23 may be a long hole in the bracing direction in order to vary the sliding start timing. This is to switch the magnitude of the frictional force ΣFf in two steps by shifting the sliding start timing of the two third pressure plates 36 and 37. For example, there may be a case where it is desired to attenuate the vibration with a small frictional force ΣFf in a predetermined range of the relative movement amount in the bracing direction and to attenuate the vibration with a large frictional force ΣFf in a range other than the predetermined range. And in that case, as shown in FIG. 4, about the 3rd press-contact plate 36 of the two 3rd press-contact plates 36 and 37, as shown in FIG. Although the circular holes having substantially the same diameter as the outer diameters of 47 and 47 are formed, the other third pressure contact plate 37 is provided with the corresponding second through hole 23 in the brace extending direction as shown in FIG. A long hole longer than the circular hole is formed. Then, rather than the sliding start of the third press-contact plate 36 corresponding to the circular second through-hole 23 as shown in FIG. 4, the elongated second through-hole 23 as shown in FIG. The corresponding third press-contact plate 37 starts sliding with a delay by the difference in length between the circular hole and the long hole in the brace spanning direction. Therefore, the sliding start timings of the two third press contact plates 36 and 37 can be made different.

  Incidentally, in the ideal state in which the gap S2 is set to zero, the friction damper 10 exhibits vibration energy absorption history characteristics as shown in FIG. This graph is a graph obtained by forcibly oscillating with a predetermined amplitude δ0 in the brace spanning direction. The horizontal axis represents the relative displacement δ in the brace spanning direction, and the vertical axis represents the friction damper 10. The total sum ΣFf of the frictional forces to be performed is shown.

Here, the frictional force Ff0 in the graph is expressed by the following equation when the friction coefficient between the sliding plate 15 and the friction plates 25 and 35 is μ and the pressure contact force is N.
Ff0 = 2 × μ × N
The numerical value “2” in the above equation is because the friction damper 10 is a two-surface friction friction damper having two sliding surfaces that generate the frictional force Ff. Needless to say, the shearing force Fs, the supporting pressure Fp, the frictional force Ff, and the external force P in FIG. 5 are in the following balanced relationship.
Fs = Fp = Ff
P = 2 × Ff
Desirably, a gap is provided between the high-strength bolt 41b and the round pipe 47 as shown in FIG. 5, and more desirably, the size G of the gap is a limit state (for example, The round pipe 47 in a deformed state up to the elastic limit) may be sized so that the inner peripheral surface of the round pipe 47 and the high-strength bolt 41b do not contact each other. If set in this way, the supporting pressure Fp for sliding the third pressure contact plates 36, 37 acts only on the round pipe 47 and not on the high strength bolt 41b. It becomes possible to maintain the soundness of the plant at a high level.

  Further, preferably, as shown in FIG. 5, the total length of the round pipe 47 is set to such a length that both ends in the tube axis direction do not protrude outward from the third through hole 33 and the second through hole 23. At the same time, a thin plate 45 with a hole 45a is fixed to the surface of the third pressure contact plate 36, 37 on the side of the disc spring 43 and the surface of the second pressure contact plate 21 on the side of the disc spring 43, respectively. The hole diameters of the holes 45 a and 45 a may be set smaller than the outer diameter of the round pipe 47. In this way, the movement of the round pipe 47 in the tube axis direction is restricted by the thin plates 45, 45, so that the drop off of the round pipe 47 from the third, second, and first through holes 33, 23, 13 is prevented. It is surely prevented. In addition, if these thin plates 45 and 45 are comprised with a raw material with a low friction coefficient, or coat with the same material, abrasion of the corner | angular part of the disc spring 43 which contact | abuts these thin plates 45 and 45 can be reduced.

  By the way, as shown in FIGS. 6A to 6D, the third press-contact plates 36 and 37 have a third through hole 33 formed in the center (preferably the centroid) of the planar shape. The high-strength bolt 41b and the round pipe 47 are arranged. In addition, on the design drawing, the two sides 36b, 36b, 37b, and 37b of the four sides of the outer shape having a substantially rectangular shape in the planar shape of each of the third pressure contact plates 36 and 37 are parallel to the brace extending direction. The third pressure contact plates 36 and 37 are disposed with the target disposed state.

  However, during the operation of the friction damper 10, the third press contact plates 36, 37 may rotate with the high-strength bolt 41 b (or the round pipe 47) as the central axes C 36, C 37. And when it rotates, the 3rd press-contact plates 36 and 37 will be in the state different from the target arrangement | positioning state on a design drawing, and it may become problems, such as a bad appearance.

  Therefore, in the friction damper 10 according to the first embodiment, by providing two press contact units 10a side by side in the brace extending direction, the two third press contact plates 36, 37 included in each press contact unit 10a are mutually connected. It is set as the structure which suppresses rotation. In the first embodiment, the third press contact plates 36 and 37 are provided side by side on the surface 11a (corresponding to “one of the two surfaces”) of the front and back surfaces of the first press contact plate 11, A high strength bolt 41b, a nut 41n, a round pipe 47, a disc spring 43, a first through hole 13, a second through hole 23, a friction plate 25, and a sliding plate 15 are provided for each of the pressure plates 36 and 37.

  At this time, for example, the third press contact plates 36 and 37 of each press contact unit 10a are formed in a rectangular shape like the third press contact plate 31 in FIG. 1 and are orthogonal to the brace spanning direction of each third press contact plate 31. If it can arrange | position so that one edge | side may mutually contact | abut, it is possible to regulate rotation of another 3rd press-contact plate with each 3rd press-contact plate. However, in consideration of processing accuracy and attachment accuracy of the third pressure contact plate, it is difficult to attach the two third pressure contact plates adjacent to each other in all the friction dampers. There is a possibility that one end of the two matched third press-contact plates rides on the end of the other third press-contact plate and cannot be attached. For this reason, if it is set as the dimension which can be reliably attached in consideration of the processing accuracy and the attachment accuracy of the third pressure contact plate, a slight gap will occur when the two adjacent third pressure contact plates are attached.

  Even if such a gap is generated between two adjacent third pressure plates, when the two third pressure plates are rotated by this gap, the appearance is deteriorated. Therefore, in the first embodiment, even if the clearance S3 is generated in consideration of the processing accuracy and the mounting accuracy, the rotation amount of the third press-contact plates 36 and 37 is reduced as much as possible in FIGS. 6A and 6B. As shown in FIG. 4, one of the third pressure contact plates 36, 37 has a convex portion 36a that protrudes toward the other third pressure contact plate 37, and the other third pressure contact plate. 37 has a concave portion 37a into which the convex portion 36a enters.

  Here, when the side portions where the two third press-contact plates 31 having a rectangular shape face each other are linear ends (hereinafter referred to as a linearly opposed type), a convex portion on one side as in this embodiment The amount of rotation in the case where 36a is provided and the concave portion 37a is provided on the other side (hereinafter referred to as an uneven type) will be compared.

  FIG. 9 is a diagram comparing the amount of rotation when two third pressure-contact plates 31, 31, 36, and 37 that are adjacent to each other in the linearly opposed type and the concavo-convex type are attached with the same gap S 3. In FIG. 9, the left third pressure contact plates 31, 37 of the adjacent third pressure contact plates 31, 31, 36, 37 are the left material and the right side Three pressure contact plates 31 and 36 are used as the right members. FIG. 9A is a diagram showing a target arrangement state of the adjacent third press contact plates, and FIG. 9B is a diagram in which the left material does not rotate but the right material rotates clockwise and the rotation is restricted. FIG. 9C is a diagram showing a position where the left material does not rotate but the right material rotates counterclockwise and the rotation is restricted, and FIG. FIG. 9E is a diagram showing a position where the rotation of both the material and the right material is counterclockwise and the rotation is restricted, and FIG. 9E shows the rotation of the left material and the right material both rotated clockwise. 9 (f) is a diagram showing a position where the left member rotates clockwise and the right member rotates counterclockwise, and the rotation is restricted. (G) is a figure which shows the position by which a left material rotates counterclockwise and a right material rotates clockwise, and rotation is controlled.

  FIG. 10A is an enlarged view of A1 in FIG. 9 showing a gap between adjacent third press contact plates in the installed state, and FIG. 10B is a rotation when the linearly opposed third press contact plate rotates in the same direction. It is a figure which shows angle (theta) 1. FIG. FIG. 11A is an enlarged view of B1 in FIG. 9 showing a gap between adjacent third press contact plates in the installed state, and FIG. 11B shows a rotation angle θ2 when the concave and convex third press contact plate rotates in the same direction. FIG.

  In the comparison of the rotation amount of the third press contact plate, the distance between the centers of the third through holes 33, 33, 33, 33 of the two adjacent third press contact plates 31, 31, 36, 37 and the left member 31 are set. 37 and the right members 31, 36 are set to be equal in size, and the concave and convex third pressure contact plates 36, 37 form a convex portion 36a in which the linearly opposed right member 31 protrudes toward the left member 31 side, The left material 37 is cut out by the amount corresponding to the convex portion 36a. At this time, the gap S3 in the brace spanning direction between the concavo-convex convex portion 36a and the concave portion 37a and the gap S3 in the direction orthogonal to the brace spanning direction are also the gap S3 between the linearly opposed left member 31 and the right member 31. Is set to be the same.

  9 (b), 9 (c), and the left members 31, 37 and the right member 31 showing a case where one of the left members 31, 37 and the right members 31, 36 does not rotate and the other rotates. 9 (f) and FIG. 9 (g) showing the case of rotating in directions different from each other, there is no significant difference in the amount of rotation regardless of whether it is a linearly opposed type or an uneven type. However, as shown in FIGS. 10 and 11, FIGS. 9 (d) and 9 (e) showing the case where the left members 31, 37 and the right members 31, 36 rotate in the same direction, are linearly opposed types. Is larger than the rotation angle θ2 of the concavo-convex mold, and the inclination of the left member 31 and the right member 31, that is, the third press contact plates 31, 31, becomes conspicuous.

  This is because, in the case of the straight facing type, the gap S3 between the left member 31 and the right member 31 is orthogonal to the bracing direction, so the left member 31 and the right member that rotate around the round pipe 47 The trajectory of rotation of the opposing end portions 31d and 31d of the material 31 is substantially along the gap S3, and the third press-contact plates 31 and 31 can rotate greatly even with a slight gap S3. On the other hand, in the case of the concavo-convex type, a gap S3 between the convex portion 36a and the concave portion 37a is also present in the bracing direction, and this gap S3 is formed between the left member 37 and the right member 36 that rotate around the round pipe 47. Since the corners 36c and 37c intersect the trajectory of rotation, the third pressure contact plates 36 and 37 that rotate around the round pipe 47 can rotate only a slight width of the gap S3. is there.

  For this reason, in the first embodiment, a protruding portion 36a is provided by projecting from one of the adjacent two third pressing plates 36, 37 from the third pressing plate 36, and the protruding portion 36a is provided on the other third pressing plate 37. As a configuration provided with the recessed portion 37a to enter, the rotation of the two adjacent third press contact plates 36, 37 is suppressed.

  FIG. 12 is a view showing a modification of the concavo-convex third pressure contact plate.

  In the first embodiment, the example in which the convex portions 36a and the concave portions 37a provided on the third press-contact plates 36 and 37 are formed so as to form a substantially right angle has been described. As shown, even in the trapezoidal convex portion 36a having the inclined portions 36d and 37d, and the concave portion 37a, the gap S3 between the convex portion 36a and the concave portion 37a has a central axis C36, which is the center of the round pipe 47, It suffices if the left member 37 rotating at C37 and the opposite corners 36c of the right member 36 are provided so as to intersect with the locus of rotation at an angle closer to a right angle.

=== Second Embodiment ===
FIG. 13 is a cross-sectional view illustrating a configuration of a friction damper in which a third press contact plate is provided on each side of the second press contact plate.

  As shown in FIG. 4, the friction damper 10 according to the first embodiment is a sliding surface that generates frictional force by sandwiching the front and back surfaces of the first pressure contact plate 11 between the second pressure contact plate 21 and the third pressure contact plates 36 and 37. Although the two-surface friction friction damper 10 having two surfaces formed is illustrated, as shown in FIG. 13, a four-surface friction friction damper 100 having four sliding surfaces may be used. In this case, one first pressure plate 11 is added to become two, and accordingly, the third pressure plates 36 and 37 are also added one by two. In the following description, the same components as those in the first embodiment are denoted by the same reference numerals in the drawings, and the description thereof is omitted.

  In the case of the friction damper 100 with four-surface friction, the filler plate 50 is not only applied to one surface of the web 51W of the brace segment 51 to which the first pressure contact plate 11 is bolted in the first embodiment, but also to the opposite surface. And is bolted with the two first pressure plates 11 facing each other, and the added first pressure plate 11 is sandwiched between the second pressure plates 21 of the first embodiment. Accordingly, third pressure plates 36 and 37 are newly added. The first through-holes 13 are also formed as long holes having the same specifications in the added first pressure contact plates 11, while the third through-holes 33 are also in the same specifications in the added third pressure contact plates 36 and 37. Further, the first and third through holes 13 and 33 are connected to the round pipe 47 and the first through third through holes 13, 23, and 33 of the first embodiment. The high-strength bolt 41b is inserted and fastened by a nut 41n screwed to the tip of the high-strength bolt 41b. Here, the third press contact plate through which the single round pipe 47 and the high-strength bolt 41b are inserted corresponds to a third press contact plate.

  In this way, when the third press-contact plates 36 and 37 are provided side by side along the direction in which the brace 5 is spanned, two third press-contact plates 36 and 37 are provided on both sides of the web 52W. A convex portion 36a is formed on one of the two adjacent third pressure-contact plates 36, 37, and a concave portion 37a into which the convex portion 36a enters is provided on the other, and the two adjacent third pressure-contact plates 36, 37 are It is comprised so that rotation may mutually be suppressed.

=== Third and Fourth Embodiments ===
FIG. 14 is a front view showing a friction damper provided on the flange portion of the H-shaped steel. FIG. 15 is an EE arrow view in FIG. FIG. 16 is a plan view showing a configuration in which rotation is mutually suppressed by two third press-contact plates that are adjacent to each other in a direction crossing the brace spanning direction. FIG. 17 is a view taken along the line FF in FIG.

  In the first and second embodiments, the example in which the friction dampers 10 and 100 are provided on the web 52W of the brace segment 52 has been described. However, the present invention is not limited to this. For example, as in the third embodiment shown in FIGS. 14 and 15, when the friction dampers 100 are provided on the flanges 52F of the brace segment 52 on both sides of the web 52W, the brace is passed over. A convex portion 36a is formed on one of the two third pressure contacting plates 36, 37 arranged in the direction, and a concave portion 37a into which the convex portion 36a enters is provided on the other, and the two adjacent third pressure contacting plates 36, 37 rotate with each other. You may comprise so that it may suppress. Further, as in the fourth embodiment shown in FIGS. 16 and 17, two friction dampers 100 arranged side by side in the direction (crossing direction) perpendicular to the bracing direction on one surface side of the flange 52 </ b> F are each 1 The third pressure contact plate having one each is the third pressure contact plate of one friction damper 100 as the third pressure contact plate 36 having the convex portion 36a, and the third pressure contact plate of the other friction damper 100 is the concave portion into which the convex portion 36a enters. The third press contact plate 37 having 37a may be configured such that the two third press contact plates 36, 37 adjacent to each other in the direction orthogonal to the brace spanning direction mutually suppress the rotation. Here, the two first pressure plates, the two third pressure plates, the shaft member, and the second penetration that each of the two friction dampers 100 arranged side by side in the direction (crossing direction) orthogonal to the bracing direction The holes are provided in pairs. For this reason, not only a pair but two or more pairs may be provided. At this time, as shown in FIG. 14, the third press contact plates 36 and 37 are provided on both surfaces of the flange 52 </ b> F, and two third press contact plates 36 and 37 adjacent to each other along the bridging direction of the brace 5 are provided. In the case where each of the flanges 52F is provided, a convex portion 36a is formed on one of two adjacent third press-contacting plates 36, 37 provided along the direction in which the brace 5 is stretched on each surface side of the flange 52F, and the convex portion 36a is provided on the other side. By providing the recessed portion 37a to enter, the two third press-contact plates 36, 37 adjacent to each other on each surface side of the flange 52F can be configured so as to suppress the rotation of each other.

=== Fifth Embodiment ===
Further, in the case of the friction damper 100 provided on the flange 52F and having the third press contact plate on each surface side of the flange 52F, as in the fifth embodiment shown in FIGS. The third press-contact plates 38, 39 provided on one surface side of the flange 52F and on the outer surface 52Fa side on which the web 52W is not provided are configured to suppress mutual rotation by the convex portion 38a and the concave portion 39a. The third press contact plates 40, 40 that are configured and provided on the side on which the web 52W that is the other surface side of the flange 52F is provided are provided on the one surface side of the flange 52F and the rotation is suppressed. The rotation of the third pressure contact plate 40 provided on the other surface side of the flange 52F may be suppressed by engaging with the third pressure contact plates 38 and 39.

  FIG. 18 is a plan view showing a configuration in which the third press-contact plates provided on both surface sides of the flanges are mutually restrained from rotating by a rod-shaped steel material. FIG. 19 is a GG arrow view in FIG.

  Specifically, as shown in FIGS. 18 and 19, the friction damper 100 of the fifth embodiment is provided on each third pressure contact plate 38, 39, 40, 40 provided on each surface side of the flange 52 </ b> F. The extending portions 38c, 39c, 40c, 40c are provided from the flange 52F, the first press contact plate 11 and the second press contact plate 21 so as to extend to the opposite side of the web 52W. Each of the fourth through holes 34 is provided in each. At this time, one fourth through-hole 34 is provided on each side of the high-strength bolt 41b in the brace extending direction on the extending portions 38c, 39c, 40c, 40c of the third press-contact plates 38, 39, 40, 40. It is provided one by one. More preferably, the extension portions 38c, 39c, 40c, and 40c of the third press-contact plates 38, 39, 40, and 40 are respectively provided on both ends in the brace extending direction.

  A convex portion 38a is formed on one of the two adjacent third press-contact plates 38, 39 on the outer surface 52Fa side of the flange 52F where the web 52W is not provided, and a concave portion 39a into which the convex portion 38a enters is provided on the other side. The two adjacent third press-contact plates 38, 39 are configured so as to suppress rotation of each other. On the other hand, the third press contact plates 40, 40 on the web 52W side are extended from the extended portions 38c, 39c, 40c, 40 of the third press contact plates 38, 39, 40, 40 provided on both surface sides of the web 52W, respectively. For example, by inserting a rod-shaped steel material 44 as a single insertion member through the fourth through-hole 34, the third press contact plates 38, 39, 40, 40 provided on both sides of the flange 52F are interlocked. At this time, when the flange 52F forms a horizontal surface, the steel material 44 is inserted in the vertical direction, so by forming a portion 44a thicker than the fourth through hole 34 at the upper end of the steel material 44, It is possible to maintain the state in which the steel material is inserted through the third press-contact plates 38, 39, 40, and 40. Further, when the flange 52F has a vertical surface, the steel material 44 is inserted in the horizontal direction, so that one end of the steel material 44 is formed with a portion thicker than the fourth through hole 34, and the third pressure contact plate It is desirable that a retaining member is attached to the other end after the steel material 44 is inserted into 38, 39, 40, 40.

  A convex portion 38a is formed on one of the two adjacent third press-contact plates 38, 39 on the outer surface 52Fa side of the flange 52F where the web 52W is not provided, and a concave portion 39a into which the convex portion 38a enters is provided on the other side. Since the two matched third press-contact plates 38 and 39 mutually suppress the rotation, when the third press-contact plates 40 and 40 on the web 52W side rotate, first, the rotation with the fourth through hole 34 is suppressed. The inner circumferential surface of the fourth through-hole 34 and the rod-shaped steel material 44 come into contact with each other by the clearance of the rod-shaped steel material 44 engaged with the third press-contact plates 38 and 39 outside the flange 52F. Rotation is suppressed. In this way, by rotating the third press contact plates 38, 39, 40, 40 on both sides of the flange 52F with the rod-shaped steel material 44, the rotation of the third press contact plates 38, 39, 40, 40 is performed. Can be suppressed. In this case, the third through-hole 34 is formed in each of the third press-contact plates 38, 39, 40, 40, and the third steel on the web 52W side is simply inserted through the fourth through-hole 34. The rotation of the pressure plates 40, 40 can be suppressed. For this reason, the processing of the third press contact plates 38, 39, 40, 40 and the construction for suppressing the rotation of the third press contact plates 38, 39, 40, 40 are also easy.

  In the fifth embodiment, the member that is inserted into the fourth through hole 34 of the third pressure contact plates 38, 39, 40, 40 on both surface sides of the flange 52F is the rod-shaped steel material 44, but the modification of the fifth embodiment For example, as shown in FIG. 20A and FIG. 20B, for example, a steel plate 60 that crosses both sides of the round pipe 47 in the bracing direction may be used. In this case, slit-like fifth through holes 32 that are long in the brace extending direction are formed in the extending portions 38c, 39c, 40c, and 40c of the third press-contact plates 38, 39, 40, and 40, respectively. Is inserted in the vertical direction, the upper end portion forms a part wider than the width of the fifth through-hole 32, so that the single steel plate 60 is formed on the third press contact plates 38, 39, 40, 40. It is possible to maintain the inserted state. Further, when the steel plate 60 is inserted in the vertical direction, a portion wider than the width of the fifth through hole 32 is formed at the upper end portion of the steel plate 60 and the third pressure contact plates 38, 39, 40, 40 are formed. After the steel plate 60 is inserted, it is desirable to prevent it from coming off by screwing a nut into a bolt that has penetrated the steel plate 60, for example, at the other end.

=== Other Embodiments ===
As mentioned above, although embodiment of this invention was described, this invention is not limited to this embodiment, The deformation | transformation as shown below is possible in the range which does not deviate from the summary.

  In the above-described embodiment, the example in which the two third press contact plates 36, 37, 38, and 39 are arranged adjacent to each other has been described. However, the present invention is not limited to this, and the third press contact plates 31 may be arranged in an arbitrary number of three or more. . For example, as shown in FIG. 21A, when five third press-contact plates 53, 54, 55, 56, and 57 are arranged in the bridging direction of the brace 5, two pairs positioned adjacent to each other are adjacent to each other. Of the third pressure contact plates 53, 54, 56, 57 are provided with convex portions 53a, 57a, and the other third pressure contact plates 54, 56 are provided with convex portions 53a, 57a. The recessed part 54a, 56a to enter should just be provided. At this time, even if the center third pressure contact plate 55 and the third pressure contact plates 54 and 56 located on both sides thereof face each other so that the linear end portions 54b, 55b and 56b are substantially parallel to each other, Since the rotation by the two pairs of third pressure plates 53, 54, 56, 57 on both ends is suppressed, the rotation of the third third pressure plate 55 can also be suppressed. In addition, at this time, the opposing portions of the third third press contact plate 55 and the third press contact plates 54, 56 located on both sides thereof are formed to be inclined with respect to the brace spanning direction as shown in FIG. As shown in FIG. 21C, the opposite end portions are provided with stepped portions 54c, 55c and 56c, and the opposite end portions are provided with stepped portions 54d, 55d and 56d as shown in FIG. 21D. By adopting a configuration, the amount of rotation of the third third pressure contact plate 55 can be further reduced.

  Further, when the plurality of third press contact plates are arranged so as to be continuous, one of a pair of adjacent third press contact plates among the third press contact plates has a convex portion and the other has a concave portion. If so, it is possible to suppress the rotation amount to be smaller than in the case where the end portions of all the third pressure contact plates are linearly opposed to each other.

  In the above-described embodiment, the round pipe 47 (corresponding to the pipe member) and the round pipe 47 are used as shaft members that are provided through the first to third through holes 13, 23, and 33 so as to apply a pressure contact force. The assembly which combined both with the high strength volt | bolt 41b (equivalent to a bolt member) to penetrate was illustrated. In this configuration, transmission of the supporting pressure Fp necessary for sliding the third press contact plate 31 from the second press contact plate 21 to the third press contact plate 31 is performed on the inner peripheral surfaces of the round pipe 47 and the second through hole 23. In addition, this is performed by contact / engagement with the inner peripheral surface of the third through-hole 33, but is not limited thereto. For example, in some cases, the round pipe 47 may not be provided, that is, only the high-strength bolt 41b may be inserted into the first to third through holes 13, 23, and 33 (see, for example, FIG. 2). ). In this case, the transmission of the supporting pressure Fp necessary for sliding the third pressure contact plate 31 from the second pressure contact plate 21 to the third pressure contact plate 31 is performed within the high-strength bolt 41 b and the second through hole 23. It is performed by contact and engagement with the peripheral surface and the inner peripheral surface of the third through-hole 33. In that case, the high-strength bolt 41b corresponds to the “shaft member” according to the claims. It will be.

  In the above-described embodiment, the friction damper 10 is incorporated into the webs 52W and 52W of the brace 5 of the column beam frame 1 and the flanges 52F and 52F of the brace 5, but other than the brace 5 of the column beam frame 1, for example, Alternatively, it may be incorporated in a partition wall. In other words, when a structure such as a building having the column beam frame 1 is vibrated, any pair of members that move relative to each other in the structure can be installed between them.

  In the above-described embodiment, the planar shape of the third press contact plates 36, 37, 38, 39 is exemplified as a substantially square and a substantially rectangular shape, but the present invention is not limited to this. That is, it may be a polygon other than a quadrangle, a circle such as an ellipse, and even if the outer shape of the planar shape is a special shape formed by combining a straight line and a curve, the third adjacent to each other. It does not matter as long as the pressure contact plate has a shape that regulates the mutual rotation by the convex portion and the concave portion.

  In the above-described embodiment, the steel round pipe 47 is illustrated as an example of the pipe member. However, a bolt member such as a high-strength bolt 41b is provided on the inner side and has a proof strength that can withstand the assumed shearing force Fs. As long as it can be inserted, its shape and material are not limited to this. For example, the shape may be a rectangular pipe having a rectangular cross section, and the material may be a non-ferrous metal such as aluminum or a non-metal such as resin.

  In the above-described embodiment, the material of the friction plates 25 and 35 has not been described in detail. However, any material that generates an appropriate frictional force with the sliding plate 15 such as a stainless steel plate can be applied. For example, when the sliding plate 15 is a stainless steel plate, the friction plates 25 and 35 include fiber materials such as aramid fiber, glass fiber, vinylon fiber, carbon fiber, cashew dust, lead, etc. with a thermosetting resin as a binder. And a friction material mainly composed of a friction modifier and a filler such as sulfate sulfate. As the friction plates 25 and 35, the above-described friction material may be used alone, or a friction material with a steel plate or the like lined up to increase the strength may be used.

  In the above-described embodiment, the first pressure contact plate 11 is provided with a stainless steel plate as an example of the sliding plate 15, and the second pressure contact plate 21 and the third pressure contact plate 31 are provided with the friction plate 25 and the friction plate 35. However, the arrangement relationship may be reversed.

  In the above-described embodiment, as shown in FIGS. 6B and 6D, one friction plate 35 is provided on one side of the third pressure contact plate 31, and one friction plate 25 is provided on one side of the second pressure contact plate 21. However, it is not limited to this. That is, a plurality of friction plates 35, 35, such as two, are provided on the third pressure contact plate 31 so as to dodge the arrangement position of the high strength bolt 41b (or round pipe 47) and the high strength bolt 41b (or round pipe). 47) A plurality of friction plates 25, 25, such as two, may be provided on the second pressure contact plate 21 so as to avoid the arrangement position of 47).

1 column beam frame (building frame, structure), 5 brace,
10 Friction damper, 10a Pressure welding unit,
11 first pressure contact plate, 11a surface (one surface),
13 first through hole, 15 sliding plate,
21 second pressure contact plate, 23 second through hole, 25 friction plate,
31 third pressure contact plate (left material, right material), 31d end, 32 fifth through hole,
33 third through hole, 34 fourth through hole, 35 friction plate,
36 3rd press-contact plate (left material, right material), 36a convex part, 36b two sides,
36c corner part, 36d inclined part, 37 third pressure contact plate (left material, right material),
37a concave part, 37b two sides, 37c corner part, 37d inclined part,
38 3rd press-contact plate (left material, right material), 38a convex part, 38c extension part,
39 third pressure contact plate (left material, right material), 39a concave portion, 39c extension portion,
40 3rd press-contact plate (left material, right material), 40c extension part,
41b high-strength bolt (bolt member), 41n nut, 44 bar steel,
44a Thick site, 45 thin plate, 45a hole, 47 round pipe (pipe member),
51 One brace piece (one member), 51W web,
51F flange, 52 piece of the other brace (the other member),
52W web, 52F flange, 51Fa outer surface, 53 third press contact plate,
53a convex part, 54 3rd press contact plate, 54a concave part, 54b end part, 54c step part,
54d stepped portion, 55 third pressure contact plate, 55b end, 55c step,
55d Stepped part, 56 3rd press-contact plate, 56a Concave part, 56b End part,
56c step portion, 56d stepped portion, 57 third press-contact plate, 57a convex portion,
60 steel plate, 100 friction damper, 110 friction damper,
Ff frictional force, Fp support pressure, Fs shearing force, P external force,
S1 interval, S2 gap, S3 gap, S4 gap, C31 central axis,
C36 center axis

Claims (6)

A friction damper that is disposed between a pair of members that move relative to each other in a predetermined direction in the structure, and that suppresses the relative movement by the frictional force between the pressure plates that slide with the relative movement,
A first pressure contact plate provided on one member of the pair of members and having a first through hole long in the predetermined direction;
A second pressure contact plate provided on the other member of the pair of members and having a second through hole;
A third press-contact plate having a third through hole sandwiched between the first press-contact plate and the second press-contact plate with a predetermined press-contact force from both sides;
A shaft member provided through the first through-hole, the second through-hole, and the third through-hole to provide the pressure contact force;
The first through hole allows the second pressure contact plate to slide in the predetermined direction relative to the first pressure contact plate, and the third pressure contact plate moves relative to the first pressure contact plate along with the sliding. In order to slide in the predetermined direction, the sliding force is applied from the second pressure contact plate to the third through the engagement of the shaft member with the second through hole and the third through hole. Transmitted to the pressure plate,
A plurality of third press contact plates are provided side by side on one of the two surfaces of the first press contact plate, and the shaft member, the second through hole, and the third are provided for each third press contact plate. Each through hole is provided,
Of the plurality of third pressure-contact plates, two adjacent third pressure-contact plates are such that one of the third pressure-contact plates protrudes from the one third pressure-contact plate toward the other third pressure-contact plate. The third pressure contact plate on the other side has a concave portion into which the convex portion enters,
When the two third pressure-contact plates try to rotate around the corresponding shaft members, the convex portions and the concave portions engage with each other, so that the two adjacent third pressure-contact plates are , A friction damper characterized by mutually suppressing rotation. A friction damper that is disposed between a pair of members that move relative to each other in a predetermined direction in the structure, and that suppresses the relative movement by the frictional force between the pressure plates that slide with the relative movement,
A first press-contact plate having a first through-hole that is provided in a pair in a direction intersecting the predetermined direction on one member of the pair of members and has a first through hole long in the predetermined direction;
A second pressure-contact plate provided on the other member of the pair of members and having a second through hole corresponding to the first through hole;
A pair of third press contact plates which are provided corresponding to each of the first press contact plates by sandwiching the first press contact plate with a predetermined press contact force from both sides together with the second press contact plate;
A shaft member that is provided for each of the third press contact plates through the first through hole, the second through hole, and the third through hole in order to apply the press contact force;
The first through hole allows the second pressure contact plate to slide in the predetermined direction relative to the first pressure contact plate, and the third pressure contact plate moves relative to the first pressure contact plate along with the sliding. In order to slide in the predetermined direction, the sliding force is applied from the second pressure contact plate to the third through the engagement of the shaft member with the second through hole and the third through hole. Transmitted to the pressure plate,
The two third press contact plates through which the two shaft members respectively inserted through the pair of first press contact plates are inserted are arranged in a direction crossing the predetermined direction, and one of the first press contacts is provided. The three pressure-contact plates have a convex portion protruding from the one third pressure-contact plate to the other third pressure-contact plate side, and the other third pressure-contact plate has a concave portion into which the convex portion enters,
When the two third pressure-contact plates try to rotate around the corresponding shaft members, the convex portions and the concave portions engage with each other, so that the two adjacent third pressure-contact plates are , A friction damper characterized by mutually suppressing rotation. A friction damper that is disposed between a pair of members that move relative to each other in a predetermined direction in the structure, and that suppresses the relative movement by the frictional force between the pressure plates that slide with the relative movement,
Two first press-contact plates provided on one member of the pair of members and facing each other;
A second pressure contact plate provided on the other member of the pair of members and interposed between the two first pressure contact plates;
A pair of third pressure plates that are provided on both sides of the second pressure plate and sandwich the first pressure plate together with the second pressure plate from both sides with a predetermined pressure force; and
A first through hole that is long in the predetermined direction of each of the first pressure plates, a second through hole of the second pressure plate, and a third through hole of each of the third pressure plates to apply the pressure force. A shaft member provided through the hole,
The first through hole allows the second pressure contact plate to slide in the predetermined direction relative to the first pressure contact plate, and the third pressure contact plate moves relative to the first pressure contact plate along with the sliding. In order to slide in the predetermined direction, the sliding force is applied from the second pressure contact plate to the third through the engagement of the shaft member with the second through hole and the third through hole. Transmitted to the pressure plate,
A plurality of the pair of third press-contact plates, the shaft member, and the second through hole are provided side by side in the predetermined direction,
The two third pressure plates adjacent to each other in the predetermined direction on each surface side of the second pressure plate are such that one of the third pressure plates is from the third pressure plate to the other of the third pressure plates. A convex portion projecting toward the pressure plate, and the other third pressure plate has a concave portion into which the convex portion enters,
When the two third pressure contact plates try to rotate around the inserted shaft member, the protrusions and the recesses engage with each other, so that the two adjacent third pressure contact plates are Is a friction damper characterized in that the rotation of each other is suppressed. A friction damper that is disposed between a pair of members that move relative to each other in a predetermined direction in the structure, and that suppresses the relative movement by the frictional force between the pressure plates that slide with the relative movement,
Two first press-contact plates provided on one member of the pair of members and facing each other;
A second pressure contact plate provided on the other member of the pair of members and interposed between the two first pressure contact plates;
Two third pressure plates that are provided on both sides of the second pressure plate and sandwich the first pressure plate together with the second pressure plate from both sides with a predetermined pressure force; and
In order to apply the pressure contact force, the first pressure contact plate is inserted through the first through hole long in the predetermined direction, the second pressure contact plate second through hole, and the third pressure contact plate third through hole. A shaft member provided,
The first through hole allows the second pressure contact plate to slide in the predetermined direction relative to the first pressure contact plate, and the third pressure contact plate moves relative to the first pressure contact plate along with the sliding. In order to slide in the predetermined direction, the sliding force is applied from the second pressure contact plate to the third through the engagement of the shaft member with the second through hole and the third through hole. Transmitted to the pressure plate,
The two first pressure-contact plates, the two third pressure-contact plates, the shaft member, and the second through hole are provided in pairs in the crossing direction that intersects the predetermined direction, respectively.
The third press contact plate that is provided on one surface side of the second press contact plate and forms the pair aligned in the intersecting direction is configured such that one of the third press contact plates is different from the one third press contact plate to the other of the second press contact plates. A convex portion projecting toward the three pressure contact plate side, and the other third pressure contact plate has a concave portion into which the convex portion is inserted, and the convex portion when each of the third pressure contact plates tries to rotate around the corresponding shaft member. And the recesses engage with each other, so that the two adjacent third press-contact plates mutually suppress rotation,
Each of the third pressure-contact plates extends in a direction intersecting the predetermined direction so as to protrude from the first pressure-contact plate and the second pressure-contact plate, and the extension portion has a fourth penetration. With holes,
A single insertion member is inserted into the fourth through hole of the third pressure contact plate provided on both surfaces of the second pressure contact plate, and is provided on the other surface side of the second pressure contact plate. The friction damper, wherein rotation of the third press contact plate is suppressed. A friction damper according to any one of claims 1 to 4,
The plurality of third pressure plates are provided with the convex portions and the concave portions at portions where a pair of adjacent third pressure plates are opposed to each other, or portions opposite to other third pressure plates or other pressure plates. Friction dampers characterized in that the opposing parts are arranged close to each other. A friction damper according to any one of claims 1 to 5,
The shaft member includes a bolt member and a pipe member that is provided through the first through hole, the second through hole, and the third through hole while inserting the bolt member inward. A featured friction damper.