JP2009002120A - Friction damper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a friction damper capable of restraining the coefficient of friction from fluctuating due to rust on an opposing plate material. <P>SOLUTION: This friction damper 10 mainly comprises a plate material 12, a sliding material 14, the opposing plates 18 and 22, and protective plates 16 and 20. When a shock is generated by an earthquake etc., a frictional force is generated on a boundary face between the sliding material 14 and the protective plates 16 and 20, and the vibrational energy of the shock is gradually attenuated so that the seismic control of a building 100 can be performed. In this case, the protective plates 16 and 20 are stainless steel plates, and rustproofing treatment is applied to surfaces of the opposing plates 18 and 22 by the protective plates 16 and 20. Thus, the frictional force F1 or F2 is hardly changed by rust on a frictional surface between the protective plates 16 and 20 and the sliding material 14, and the seismic-control effect of the friction damper 10 can be maintained. Additionally, surface treatment for rustproofing is not necessary to be applied to the surfaces of the opposing plates 18 and 22, and the protective plates 16 and 20 is only required to be stuck on the surfaces of them. This facilitates the construction of the friction damper 10. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a friction damper that reduces shaking of a building structure.

  In order to reduce shaking of a building structure due to an earthquake or the like, a friction damper is provided on a beam or brace of the building structure. The friction damper has a mechanism in which a sliding plate is provided on one of two members that are relatively displaced, and the vibration is attenuated by a frictional force generated on a contact surface between the sliding plate and the other member.

  Here, as an example of the friction damper, a support plate is disposed between both surfaces of the steel beam and the beam connection part, and the horizontal movement between the steel beam and the beam connection part is enabled, thereby suppressing vibration. There is something to do (see, for example, Patent Document 1).

  In the friction damper of Patent Document 1, a subsidiary plate is disposed across the connection end of the steel beam and the tip of the beam connection portion. The accessory plate is fastened with bolts and nuts. Here, by forming a loose hole in the bolt penetration part on the steel beam side, relative movement in the horizontal direction between the steel beam and the beam connecting portion is allowed, and a friction damper is formed.

However, in the friction damper of Patent Document 1, the member constituting the friction surface is made of iron, the surface is easily rusted, and the friction coefficient of the friction surface is likely to fluctuate due to rust.
JP-A-11-269984

  An object of this invention is to obtain the friction damper which can suppress the fluctuation | variation of the friction coefficient by the rust of the other board | plate material.

  A friction damper according to claim 1 of the present invention includes a plate member attached to one building structure, a sliding member fixed to the surface of the plate member, abutting against the sliding member, and the one building structure The present invention is characterized in that a mating plate material attached to another building structure that moves relative to each other and a protective member that abuts against the sliding material and covers the surface of the mating plate material to prevent rust are provided.

  According to the above configuration, the surface of the mating plate material is rust-prevented by the protective member, and it becomes unnecessary to perform surface treatment for rust prevention on the surface of the mating plate material.

  Further, since the surface of the mating plate material is rust-proof, it is difficult for the friction force to change due to rust, and the vibration damping effect of the friction damper can be maintained.

  In the friction damper according to claim 2 of the present invention, the sliding member is attached at a predetermined interval in the longitudinal direction of the plate-like member, and the protective member is equivalent to a dimension obtained by adding a sliding allowance to the dimension of the sliding member. Or it is large, and it is characterized by being arranged two or more according to the number of the above-mentioned sliding materials.

  According to the above configuration, the same number of sliding materials and protective members are used, and by attaching them at predetermined intervals, it is not necessary to provide the sliding material and protective members on the entire surface of the plate material and the mating plate material, so the construction cost can be reduced. It becomes.

  The friction damper according to claim 3 of the present invention is characterized in that the protective member is a stainless steel plate.

  According to the said structure, since the protection member is a stainless plate, the surface of the other plate material becomes difficult to rust.

  The friction damper according to claim 4 of the present invention is characterized in that the protective member is a titanium welding member in which titanium is welded to the surface of the mating plate material.

  According to the above configuration, since the titanium welding member covers the surface of the mating plate material, the surface of the mating plate material is hardly rusted.

  The friction damper according to claim 5 of the present invention is characterized in that the protective member is fitted and fixed to the mating plate material.

  According to the above-described configuration, the fixing member can be fixed by fitting when the protective member is fixed to the mating plate material, so that the fixing operation is facilitated.

  In the friction damper according to claim 6 of the present invention, a plurality of the plate materials each having the sliding material fixed on both sides are provided on the upper and lower sides, and the mating plate material is interposed between the sliding materials fixed to the plate materials arranged on the upper and lower sides. Inserting and bringing the protective member into contact with the sliding material, the mating plate material covered with the protective member in contact with the uppermost sliding material, and the protective member in contact with the lowermost sliding material The mating plate material covered with is provided.

  According to the above configuration, the friction area per step can be reduced by stacking a plurality of plate-like members, sliding members, mating plates, and protective members to form a multi-stage friction surface. Thereby, a friction damper can be made compact and the freedom degree of installation increases.

  Since this invention set it as the said structure, the fluctuation | variation of the friction coefficient by the rust of the other board | plate material can be suppressed.

  A friction damper according to a first embodiment of the present invention will be described with reference to the drawings.

  As shown in FIG. 1 a, a high-rise building 100 is constructed on the ground 108.

  In the building 100, a pile (not shown) made of concrete or the like is formed in the vertical direction of the ground 108, and a column part 102 composed of a plurality of columns and a plurality of beams 104 are assembled and fixed on the pile. Built.

  In addition, a truss structure portion 106 is provided as a reinforcing portion against shaking or the like in a part of the hierarchy of the building 100.

  As shown in FIG. 1 b, the truss structure portion 106 includes an upper chord material 110 extending in a substantially horizontal direction, a lower chord material 112 disposed below the upper chord material 110 in parallel with the upper chord material 110, and an upper chord material 110. One end is fixed to the approximate center of the lower chord material 112 and the other end is fixed to the approximate center of the lower chord material 112. And a pillar material 116.

  The upper chord member 110, the lower chord member 112, the diagonal member 114, and the column member 116 are fastened by bolts and nuts (not shown), respectively.

  One end of the upper chord member 110 is fastened to a connection plate 118 projecting outward from the side surface of the column portion 102 by bolts and nuts (not shown). One end of the lower chord member 112 is fastened to a connection plate 120 projecting outward from the side surface of the column portion 102 on the lower side of the connection plate 118 by bolts and nuts (not shown).

  Here, a part of the lower chord material 112 is provided with a friction damper 10 that generates a frictional force to control the building 100 (see FIG. 1a).

  As shown in FIGS. 2a and 2b, the friction damper 10 is mainly composed of a plate member 12 made of a steel plate, a sliding member 14 attached to the plate member 12, and a pair of plates spaced apart from the plate member 12 so as to sandwich the plate member 12. The mating plates 18 and 22 and the protection plates 16 and 20 attached to the surfaces of the mating plates 18 and 22 and in contact with the sliding material 14 are configured.

  One end of the plate 12 is sandwiched between a pair of presser plates 24 and 26 made of a steel plate together with the tip of the connecting plate 120 (see FIG. 1).

  The presser plate 24, the connection plate 120, the plate member 12, and the presser plate 26 are formed with through holes 30 and 32 that penetrate from the upper surface of the presser plate 24 to the lower surface of the presser plate 26. Bolts 34 are inserted into the through holes 30 and 32 and fastened with nuts 36, whereby one end of the plate 12 is fixed to the connection plate 120.

  A plurality of plate-like sliding materials 14 made of a fluorine-based resin such as Teflon (registered trademark) are provided at predetermined intervals along the upper and lower surfaces of the plate material 12 on the upper and lower surfaces from the substantially central portion to the other end of the plate material 12. Affixed to the location.

  The sliding material 14 is affixed or screwed to the plate 12 with an adhesive, but a liner (backing material) made of a back metal is attached to the back side of the sliding material 14, and this liner is used as the plate 12. It may be attached to a groove portion that has been cut into two or pasted or screwed. By doing in this way, local stress concentration to the sliding material 14 can be relieved.

  The lower and upper surfaces of the protective plates 16 and 20 arranged in parallel with a predetermined distance between them are in contact with the upper or lower surface of each sliding member 14.

  The protection plates 16 and 20 are made of stainless steel plates. Moreover, the protection plates 16 and 20 are fixed to the mating plates 18 and 22 made of iron plates by adhesion. As a result, the mating plates 18 and 22 and the protection plates 16 and 20 are integrated to sandwich the plate material 12 and the sliding material 14. The mating plates 18 and 22 may use aluminum, brass, copper or the like.

  The end portions of the protection plates 16 and 20 constitute part of the lower chord material 112 (see FIG. 1) and abut against the upper and lower surfaces of the connection plate 122 provided in the vicinity of the center portion. It is pinched.

  Here, in the mating plate 18, the protection plate 16, the connection plate 122, the protection plate 20, and the mating plate 22, through holes 38 and 39 that penetrate from the upper surface of the mating plate 18 to the lower surface of the mating plate 22 are formed. . Bolts 40 are inserted into the through holes 38 and 39 and fastened with nuts 42, whereby one end of the mating plates 18 and 22 and the protection plates 16 and 20 is fixed to the connection plate 122.

  With the above configuration, the plate material 12 and the sliding material 14 move together. In addition, the mating plates 18 and 22 and the protection plates 16 and 20 are integrated to slide on the upper surface or the lower surface of the sliding material 14. In this way, the plate 12 and the mating plates 18 and 22 can be moved relative to each other.

  Next, the operation of the first embodiment of the present invention will be described.

  FIG. 3 shows a state of relative movement between the plate 12 and the mating plates 18 and 22. In FIG. 3, for the convenience of explanation, the movement amount of the plate member 12 is shown with the counterpart plates 18 and 22 as a reference (fixed).

  As shown in FIG. 3a, when the building 100 (see FIG. 1) is not shaken by an earthquake or the like, the plate 12 and the mating plates 18 and 22 are stationary.

  Subsequently, as shown in FIG. 3 b, when a shaking such as an earthquake occurs and the plate member 12 moves relative to the mating plates 18 and 22 in the arrow −X direction at a distance d <b> 1, the sliding member 14 is integrated with the plate member 12. To move in the arrow -X direction. For this reason, a frictional force is generated at the interface (friction surface) between the sliding material 14 and the protection plates 16 and 20.

  When this frictional force is F1, the vibration energy of shaking is attenuated by an energy corresponding to F1 × d1.

  Subsequently, as shown in FIG. 3c, when the plate member 12 is moved relative to the counterpart plates 18 and 22 in the arrow + X direction from the position d1 by the distance d2, the sliding member 14 is integrated with the plate member 12 in the arrow + X direction. Moving. For this reason, a frictional force is generated at the interface between the sliding material 14 and the protection plates 16 and 20.

  This frictional force is a force whose magnitude is approximately equal to F1 and opposite in direction. Assuming that this is F2, the vibration energy of the vibration is attenuated by the energy corresponding to F2 × d2.

  Thus, the vibrational energy of the vibration is gradually attenuated by the frictional force F1 or F2 generated on the friction surface between the sliding material 14 and the protection plates 16 and 20, and the building 100 is controlled.

  Here, the protection plates 16 and 20 are stainless steel plates, and the surfaces of the mating plates 18 and 22 are rustproofed by the protection plates 16 and 20. For this reason, the protection plate 16 and 20 side surface in the friction surface between the protection plates 16 and 20 and the sliding material 14 becomes difficult to rust.

  Thereby, in the friction surface between the protection plates 16 and 20 and the sliding material 14, the change of the frictional force F1 or F2 (change of a friction coefficient) by rust does not occur easily, and the damping effect of the friction damper 10 can be maintained.

  Moreover, since it is not necessary to perform the surface treatment for rust prevention on the surface of the other party plates 18 and 22, it is only necessary to affix the protection plates 16 and 20, so that the construction of the friction damper 10 becomes easy.

  Next, a second embodiment of the friction damper of the present invention will be described with reference to the drawings. Note that the same reference numerals as those in the first embodiment are given to the same elements as those in the first embodiment described above, and the description thereof is omitted.

  FIG. 4 b shows a cross section of the friction damper 50 in which a plurality of protective plates are arranged. The friction damper 50 is provided in a part of the lower chord material 112 (see FIG. 1) of the building 100 described above.

As shown in FIG. 4 b, the friction damper 50 is mainly composed of the above-described plate material 12 and a plurality of Teflon (registered trademark) attached to the plate material 12.
The plate-like sliding material 54 made of a fluorine-based resin, etc., the above-described mating plates 18 and 22, and titanium welded to the lower surface or upper surface of the mating plates 18 and 22, are provided in the same number as each sliding material 54. And a plurality of protective plates 52. The protection plate 52 is made of a stainless plate.

  As shown in FIG. 4a, the sliding material 54 is attached at predetermined intervals in the longitudinal direction of the mating plates 18 and 22, and the width dimension of the sliding material 54 is W2. On the other hand, the width dimension of the protective plate 52 in the longitudinal direction of the mating plates 18 and 22 is W1.

  Here, the width dimensions W3 and W4 of the area of the surface of the protective plate 52 that is not in contact with the sliding material 54 are the sliding allowance of the friction damper 50 (the maximum value of the relative movement distance between the plate material 12 and the mating plates 18 and 22). Is equal to or larger than the sliding allowance.

  Thereby, even if the board | plate material 12 and the other party plates 18 and 22 move relatively, the sliding material 54 and the protection board 52 always contact | abut.

  The upper and lower surfaces of the connecting plate 122 are made of steel plates and are in contact with adjusting plates 56 and 58 for adjusting the distance (gap) between the connecting plate 122 and the mating plates 18 and 22. Accordingly, the mating plates 18 and 22 sandwich the connection plate 122 via the adjustment plates 56 and 58.

  Here, through-holes 38 and 39 penetrating from the upper surface of the mating plate 18 to the lower surface of the mating plate 22 are formed in the mating plate 18, the adjusting plate 56, the connection plate 122, the adjusting plate 58, and the mating plate 22. . Bolts 40 are inserted into the through holes 38 and 39 and fastened with nuts 42, whereby one end of the mating plates 18 and 22 is fixed to the connection plate 122.

  With the above configuration, the plate member 12 and the sliding member 54 move together. In addition, the mating plates 18 and 22 and the plurality of protection plates 52 are integrated to slide on the upper surface or the lower surface of the sliding material 54. In this way, the plate 12 and the mating plates 18 and 22 can be moved relative to each other.

  Next, the operation of the second embodiment of the present invention will be described.

  5a to 5c show a state of relative movement between the plate 12 and the mating plates 18 and 22. FIG. For convenience of explanation, the amount of movement of the plate 12 is shown with the counterpart plates 18 and 22 as a reference (fixed).

  As shown in FIG. 5a, when the building 100 (see FIG. 1) is not shaken by an earthquake or the like, the plate 12 and the mating plates 18 and 22 are stationary.

  Subsequently, as shown in FIG. 5 b, when a shaking such as an earthquake occurs and the plate member 12 moves relative to the counterpart plates 18 and 22 in the arrow −X direction at a distance d <b> 3, the sliding member 54 is integrated with the plate member 12. To move in the arrow -X direction. For this reason, a frictional force is generated at the interface (friction surface) between the sliding material 54 and the protective plate 52.

  When this frictional force is F3, the vibration energy of shaking is attenuated by an energy corresponding to F3 × d3.

  Subsequently, as shown in FIG. 5c, when the plate member 12 moves from the position d3 in the arrow + X direction with respect to the counterpart plates 18 and 22 by the distance d4, the sliding member 54 moves in the arrow + X direction integrally with the plate member 12. To do. For this reason, a frictional force is generated at the interface between the sliding material 54 and the protective plate 52.

  This frictional force is a force whose magnitude is approximately equal to F3 and in the opposite direction. If this is F4, the vibration energy of the vibration will be attenuated by the energy corresponding to F4 × d4.

  Thus, the vibrational energy of the vibration is gradually attenuated by the frictional force F3 or F4 generated on the friction surface between the sliding material 54 and the protection plate 52, and the building 100 is controlled.

  Here, the friction damper 50 has the same number of sliding materials 54 and protective plates 52, and these are attached at predetermined intervals. Further, the width dimension of the protective plate 52 is equal to or larger than the dimension obtained by adding a sliding allowance to the dimension of the sliding material 54. For this reason, since it is not necessary to provide the sliding material 54 and the protection board 52 in the whole surface of the board | plate material 12 and the opposing boards 18 and 22, the cost reduction of construction becomes possible.

  Next, a third embodiment of the friction damper of the present invention will be described with reference to the drawings. Note that the same reference numerals as those in the first embodiment are given to the same elements as those in the first embodiment described above, and the description thereof is omitted.

  FIG. 6a shows a cross section of the friction damper 60 in which the protective plate is slid and fitted to the mating plate. The friction damper 60 is provided in a part of the lower chord material 112 (see FIG. 1) of the building 100 described above.

  As shown in FIG. 6a, the friction damper 60 is mainly composed of the plate material 12 described above and a plate-like sliding material 68 made of a fluorine resin such as Teflon (registered trademark) or a phenol resin, which is attached to the plate material 12. And a pair of mating plates 62 and 64 that are spaced apart from the plate material 12 so as to sandwich the plate material 12, and a protective member 66 that is attached to the surface of the mating plates 62 and 64 and is in contact with the sliding material 68. Yes.

  As shown in FIGS. 6a and 6b, groove portions 72 having a predetermined depth in the vertical direction and a predetermined length in the direction intersecting the longitudinal direction are provided at a plurality of locations on the upper and lower surfaces of the mating plates 62 and 64. Is formed. The width of the groove 72 in the longitudinal direction of the mating plates 62 and 64 is substantially equal to the width of the protective member 66.

  The protection member 66 is two plates. The protective member 66 is made of stainless steel.

Here, the protection member 66 is slid along the groove portion 72 of the mating plates 62 and 64, so that the protection member 66 and the mating plates 62 and 64 are fitted.
The sliding material 68 is attached at a predetermined interval in the longitudinal direction of the plate material 12. The width dimension of the area of the surface of the protective member 66 that is not in contact with the sliding material 68 is equal to or equal to the sliding allowance of the friction damper 60 (the maximum value of the relative movement distance between the plate 12 and the mating plates 62 and 64). It is getting bigger.

  Thereby, even if the board | plate material 12 and the other party plates 62 and 64 move relatively, the sliding material 68 and the protection member 66 always contact | abut.

  Adjusting plates 74 and 76 for adjusting the distance (gap) between the connecting plate 122 and the mating plates 62 and 64 are in contact with the upper and lower surfaces of the connecting plate 122 described above. As a result, the mating plates 62 and 64 sandwich the connection plate 122 via the adjustment plates 74 and 76.

  Here, in the mating plate 62, the adjusting plate 74, the connection plate 122, the adjusting plate 76, and the mating plate 64, through holes 63 and 65 penetrating from the upper surface of the mating plate 62 to the lower surface of the mating plate 64 are formed. . The bolts 40 are inserted into the through holes 63 and 65 and fastened with the nuts 42, whereby one end of the mating plates 62 and 64 is fixed to the connection plate 122.

  With the above configuration, the plate member 12 and the sliding member 68 move together. In addition, the mating plates 62 and 64 and the plurality of protection members 66 are integrated and slidably move on the upper surface or the lower surface of the sliding material 68. In this way, the plate 12 and the mating plates 62 and 64 can be moved relative to each other.

  Next, the operation of the third embodiment of the present invention will be described.

  When the protection member 66 is fixed to the mating plates 62 and 64, the protection member 66 can be fixed to the mating plates 62 and 64 by sliding the protection member 66 into the groove 72 of the mating plates 62 and 64. For this reason, the fixing work of the protection member 66 becomes easy.

  In addition, when shaking such as an earthquake occurs and the plate 12 moves relative to the mating plates 62 and 64, a frictional force is generated at the interface (friction surface) between the sliding member 68 and the protective member 66. This frictional force attenuates the vibrational energy of shaking. Thereby, the vibration control of the building 100 is performed.

  Next, 4th Embodiment of the friction damper of this invention is described based on drawing. Note that the same reference numerals as those in the first embodiment are given to the same elements as those in the first embodiment described above, and the description thereof is omitted.

  FIG. 7a shows a section of the friction damper 80 in which the protective plate is fitted in the recess of the mating plate. The friction damper 68 is provided on a part of the lower chord material 112 (see FIG. 1) of the building 100 described above.

  As shown in FIG. 7 a, the friction damper 80 mainly includes a plate-like sliding material 88 made of the above-described plate material 12 and a fluorine-based resin such as Teflon (registered trademark) or a phenol resin attached to the plate material 12. And a pair of mating plates 82 and 84 that are spaced apart from the plate material 12 so as to sandwich the plate material 12, and a protection plate 86 that is attached to the surface of the mating plates 82 and 84 and abuts against the sliding material 88. Yes. The protection plate 86 is made of a stainless plate.

  As shown in FIGS. 7 a and 7 b, a plurality of locations on the upper and lower surfaces of the mating plates 82 and 84 are formed with a predetermined depth in the vertical direction and an inner shape dimension substantially equal to the outer dimension of the protective plate 86. A concave portion 90 is formed. The protective plate 86 is fixed to the mating plates 82 and 84 by fitting the protective plate 86 into the recess 90.

  The sliding material 88 is attached at a predetermined interval in the longitudinal direction of the plate material 12. The width dimension of the region that is not in contact with the sliding material 88 on the surface of the protection plate 86 is equal to the sliding allowance of the friction damper 80 (the maximum value of the relative movement distance between the plate 12 and the mating plates 82 and 84), or the slip allowance. It is getting bigger.

  Thereby, even if the board | plate material 12 and the other party plates 82 and 84 move relatively, the sliding material 88 and the protection board 86 always contact | abut.

  Adjusting plates 94, 96 that adjust the distance (gap) between the connecting plate 122 and the mating plates 82, 84 are in contact with the upper and lower surfaces of the connecting plate 122 described above. As a result, the mating plates 82 and 84 sandwich the connection plate 122 via the adjustment plates 94 and 96.

  Here, through-holes 91 and 92 penetrating from the upper surface of the mating plate 82 to the lower surface of the mating plate 84 are formed in the mating plate 82, the adjusting plate 94, the connection plate 122, the adjusting plate 96, and the mating plate 84. . The bolts 40 are inserted into the through holes 91 and 92 and fastened with the nuts 42, whereby one end of the mating plates 82 and 84 is fixed to the connection plate 122.

  With the above configuration, the plate member 12 and the sliding member 88 move together. Further, the mating plates 82 and 84 and the plurality of protection plates 86 are integrated and slidably move on the upper surface or the lower surface of the sliding material 88. In this way, the plate 12 and the mating plates 82 and 84 can be moved relative to each other.

  Next, the operation of the fourth exemplary embodiment of the present invention will be described.

  When fixing the protective plate 86 to the mating plates 82 and 84, the protective plate 86 can be fixed to the mating plates 82 and 84 by fitting the protective plate 86 into the recesses 90 of the mating plates 82 and 84. For this reason, the fixing work of the protection plate 86 is facilitated.

  In addition, when shaking such as an earthquake occurs and the plate member 12 moves relative to the counterpart plates 82 and 84, a frictional force is generated at the interface (friction surface) between the sliding member 88 and the protective plate 86. This frictional force attenuates the vibrational energy of shaking. Thereby, the vibration control of the building 100 is performed.

  Next, a fifth embodiment of the friction damper of the present invention will be described with reference to the drawings. Note that the same reference numerals as those in the first embodiment are given to the same elements as those in the first embodiment described above, and the description thereof is omitted.

  FIG. 8 shows a cross section of a friction damper 130 having a multistage structure. The friction damper 130 is provided in a part of the lower chord material 112 (see FIG. 1) of the building 100 described above.

  As shown in FIG. 8, the friction damper 130 is mainly composed of plate materials 132, 134, and 136 made of steel plates, and a plurality of fluororesins such as Teflon (registered trademark) or phenols attached to the plate materials 132, 134, and 136. A plate-shaped sliding material 156 made of resin, mating plates 138, 140, 142, 144 spaced from the plate materials 132, 134, 136 so as to sandwich the plates 132, 134, 136, respectively, and mating plates 138, 140, 142 And a plurality of protective plates 154 attached to the surface of 144 and abutted against the sliding material 156.

  One end of the plate member 134 is sandwiched by a pair of presser plates 178 and 179 made of a steel plate together with the tip of the connection plate 120 described above. The presser plate 178, the connection plate 120, and the presser plate 179 are formed with through holes 182 and 183 that penetrate from the upper surface of the presser plate 178 to the lower surface of the presser plate 179. The presser plates 178 and 179 are fixed to the connection plate 120 by inserting the bolts 180 into the through holes 182 and 183 and fastening them with the nuts 181.

  The presser plates 178 and 179 are sandwiched between a pair of presser plates 150 and 152 made of steel plates. Further, the presser plates 150 and 152 are sandwiched between the plate members 132 and 136.

  Here, in the plate material 132, the press plate 150, the press plate 178, the plate material 134, the press plate 179, the press plate 152, and the plate material 136, through holes 145 and 147 that penetrate from the upper surface of the plate material 132 to the lower surface of the plate material 136 are formed. Has been. Bolts 146 are inserted into the through holes 145 and 147 and fastened with nuts 148, so that one ends of the plate materials 132, 134 and 136 are fixed to the connection plate 120.

  The sliding material 156 is plate-shaped and made of a fluorine-based resin such as Teflon (registered trademark), and a plurality of the sliding materials 156 are attached at predetermined intervals in the longitudinal direction of the plate materials 132, 134, 136.

  The protection plate 154 is made of a stainless plate. Further, the width dimension of the region of the surface of the protective plate 154 that is not in contact with the sliding material 156 is the sliding allowance of the friction damper 130 (the relative movement distance of the plate materials 132, 134, 136 and the mating plates 138, 140, 142, 144). Is equal to or greater than the sliding allowance.

  Adjusting plates 170 and 172 for adjusting the distance (gap) between the connecting plate 122 and the mating plates 140 and 142 are in contact with the upper and lower surfaces of the connecting plate 122 described above. As a result, the mating plates 140 and 142 sandwich the connection plate 122 via the adjustment plates 170 and 172.

  Further, the upper and lower surfaces of the mating plates 140 and 142 are made of steel plates, and adjustment plates 166 and 176 for adjusting the distance (gap) between the mating plates 140 and 142 and the mating plates 138 and 144 are brought into contact with each other. Yes. Thus, the mating plates 138 and 144 sandwich the mating plates 140 and 142 via the adjustment plates 166 and 176, respectively.

  Here, the mating plate 138, the adjusting plate 166, the mating plate 140, the adjusting plate 170, the connection plate 122, the adjusting plate 172, the mating plate 142, the adjusting plate 176, and the mating plate 144 are connected to the mating plate from the upper surface of the mating plate 138. Through holes 161 and 163 penetrating the lower surface of 144 are formed. Bolts 160 are inserted into the through holes 161 and 163 and fastened with nuts 162, so that one end of the mating plates 138, 140, 142, and 144 is fixed to the connection plate 122.

  With the above configuration, the plate members 132, 134, 136 and the plurality of sliding members 156 move together. In addition, the mating plates 138, 140, 142, 144 and the plurality of protective plates 154 are integrated and slidably move on the upper surface or the lower surface of the sliding material 156. In this way, the plate members 132, 134, 136 and the mating plates 138, 140, 142, 144 can be moved relative to each other.

  Next, the operation of the fifth exemplary embodiment of the present invention will be described.

  9a to 9c show a state of relative movement between the plate members 132, 134, and 136 and the counterpart plates 138, 140, 142, and 144. FIG. For convenience of explanation, the movement amounts of the plate members 132, 134, and 136 are shown with the mating plates 138, 140, 142, and 144 as a reference (fixed).

  As shown in FIG. 9a, when the building 100 (see FIG. 1) is not shaken such as an earthquake, the plate members 132, 134, 136 and the mating plates 138, 140, 142, 144 are stationary.

  Subsequently, as shown in FIG. 9b, when a shaking such as an earthquake occurs and the plates 132, 134, 136 move relative to the mating plates 138, 140, 142, 144 in the direction of the arrow -X at a distance d5, slipping occurs. The material 156 moves together with the plate materials 132, 134, 136 in the direction of the arrow -X. For this reason, a frictional force is generated at the interface (friction surface) between the sliding material 156 and the protective plate 154.

  When this frictional force is F5, the vibration energy of shaking is attenuated by an energy corresponding to F5 × d5.

  Subsequently, as shown in FIG. 9 c, when the plate members 132, 134, 136 move with respect to the counterpart plates 138, 140, 142, 144 in the arrow + X direction from the position d 5 at a distance d 6, the sliding member 156 becomes the plate member 132. , 134 and 136 move together in the arrow + X direction. For this reason, a frictional force is generated at the interface between the sliding material 156 and the protective plate 154.

  This frictional force is a force whose magnitude is approximately equal to F5 and opposite in direction. If this is F6, the vibration energy of the vibration will be attenuated by the energy corresponding to F6 × d6.

  Thus, the vibrational energy of the vibration is gradually attenuated by the frictional force F5 or F6 generated at the interface (friction surface) between the sliding material 156 and the protective plate 154, and the building 100 is controlled.

  Here, the protection plate 154 is a stainless plate, and the surfaces of the mating plates 138, 140, 142, 144 are rust-proofed by the protection plate 154. For this reason, the protection plate 154 side surface in the friction surface between the protection plate 154 and the sliding material 156 is hard to rust.

  Thereby, in the friction surface between the protective plate 154 and the sliding material 156, the frictional force F5 or F6 due to rust hardly changes, and the vibration damping effect of the friction damper 130 can be maintained.

  In addition, a plurality of plate members 132, 134, 136, a sliding member 156, mating plates 138, 140, 142, 144, and a protective plate 154 are laminated to form a multi-stage friction surface. In comparison, the friction area per stage can be reduced. As a result, the friction damper 130 can be made compact, and the degree of freedom of installation in the building 100 is increased.

  In addition, this invention is not limited to said embodiment.

  The friction dampers 10, 50, 60, 80, and 130 may be disposed so that the friction surface between the plate member and the sliding member is not only substantially perpendicular to the ground but also substantially parallel.

  Further, the friction dampers 10, 50, 60, 80, and 130 may be provided on the beam portion 104 of the building 100.

  The number of plate members and mating plates can be selected as appropriate from a plurality of sheets, not just one, three, and four. Moreover, the thickness of a board | plate material and the other party board may be the same, and one side may be thick.

  The sliding material is not only provided at three locations along the moving direction of the plate material, but a sliding material having a large area may be attached at one location, or may be attached at two or more locations.

(A) It is a general view of the building in which the friction damper which concerns on 1st Embodiment of this invention was provided. (B) It is the elements on larger scale of the building in which the friction damper which concerns on 1st Embodiment of this invention was provided. (A) It is a front view of the friction damper which concerns on 1st Embodiment of this invention. (B) It is sectional drawing of the friction damper which concerns on 1st Embodiment of this invention. It is a schematic diagram which shows the movement state of the friction damper which concerns on 1st Embodiment of this invention. (A) It is a front view of the friction damper which concerns on 2nd Embodiment of this invention. (B) It is sectional drawing of the friction damper which concerns on 2nd Embodiment of this invention. It is a schematic diagram which shows the movement state of the friction damper which concerns on 2nd Embodiment of this invention. (A) It is sectional drawing of the friction damper which concerns on 3rd Embodiment of this invention. (B) It is the elements on larger scale of the friction damper which concerns on 3rd Embodiment of this invention. (A) It is sectional drawing of the friction damper which concerns on 4th Embodiment of this invention. (B) It is a fragmentary sectional view of the friction damper which concerns on 4th Embodiment of this invention. It is sectional drawing of the friction damper which concerns on 5th Embodiment of this invention. It is a schematic diagram which shows the movement state of the friction damper which concerns on 5th Embodiment of this invention.

Explanation of symbols

10 Friction damper (friction damper)
12 Plate material (plate material)
14 Sliding material (sliding material)
16 Protection plate (protection member)
18 Mating plate (Mating plate material)
20 Protection plate (protection member)
22 Mating plate (Mating plate material)
50 Friction damper (Friction damper)
52 Protection plate (protection member)
54 Sliding material
60 Friction damper (friction damper)
62 Mating plate (mating plate material)
64 Mating plate (Mating plate material)
66 Protective member (Protective member)
68 Sliding material (sliding material)
80 Friction damper (Friction damper)
82 Mating plate (Mating plate material)
84 Mating plate (Mating plate material)
86 Protection plate (protection member)
88 Sliding material (sliding material)
100 Building 120 Connection board (one building structure)
122 Connection board (other building structures)
130 Friction damper (Friction damper)
132 Plate (Plate)
134 Board (board)
136 Plate material (plate material)
138 Mating plate (mating plate material)
140 Mating plate (Mating plate material)
142 Mating plate (Mating plate material)
144 Mating plate (mating plate material)
156 Sliding material (sliding material)
154 Protection plate (protection member)

Claims (6)

A plate attached to a single building structure;
A sliding material fixed to the plate,
A mating plate that is disposed opposite to the plate and is attached to another building structure that moves relative to the one building structure;
A protective member that abuts against the sliding material and covers the surface of the mating plate material to prevent rust;
A friction damper characterized in that it is provided.   The sliding material is attached at a predetermined interval in the longitudinal direction of the plate material, and a plurality of the protective members are arranged in accordance with the number of the sliding materials that are the same as or larger than the size of the sliding material plus a sliding allowance. The friction damper according to claim 1, wherein the friction damper is provided.   The friction damper according to claim 1, wherein the protection member is a stainless steel plate.   The friction damper according to claim 1 or 2, wherein the protective member is a titanium welding member in which titanium is welded to the surface of the mating plate material.   The friction damper according to any one of claims 1 to 4, wherein the protection member is fitted and fixed to the mating plate member. Provide a plurality of the plate material that fixed the sliding material on both sides up and down,
The mating plate member is inserted between the sliding members fixed to the plate members arranged above and below to bring the protective member into contact with the sliding member and the protective member that contacts the uppermost sliding member 6. The apparatus according to claim 1, further comprising: the mating plate material covered with the mating plate material and the mating plate material covered with the protective member that contacts the lowermost sliding material. Friction damper as described.

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