JP2000110400A - Vibration damper device - Google Patents

Abstract

(57) [Summary] [Problem] When a load exceeding an expected energy is applied while sufficiently exerting predetermined vibration damping performance, the damping damper is prevented from being damaged and economical for subsequent use. A viscoelastic body 2 is bonded and interposed between rigid plate members 1, 1 facing each other in a state parallel to each other along an axial direction. The joining members 4, 4 which are fixedly connected to both ends in the axial direction of the vibration damper 3 and can be respectively joined to the opposing portions of the structural frame are made of low yield point steel. Is smaller than that of the vibration damper 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brace and a stud when reinforcing or renovating a middle-rise building mainly made of reinforced concrete (RC) or steel frame (S).
Or, it relates to a damping device that is used by attaching it to a damping wall. Specifically, it dampens energy that causes shear deformation, such as interlayer displacement, in a structure such as a building, such as wind pressure or an earthquake. The present invention relates to a vibration damper device capable of exhibiting performance.

[0002]

2. Description of the Related Art As a vibration damper of this type, as disclosed in Japanese Patent No. 2541073 and the like, a hydraulic chamber is formed on both sides of a piston which moves in the cylinder body with the cylinder body. An oil damper in which a pressure regulating valve and a relief valve are provided in a flow path connecting these two hydraulic chambers, and a vibration damping (damping) characteristic can be adjusted by controlling a set value of an opening / closing operation pressure by a hydraulic pressure of the valve, Japanese Patent No. 25668633 and Patent No. 253417
No. 1, JP-A-9-256510, etc., a viscoelastic body is interposed between adjacent opposing surfaces of a plurality of rigid plate materials such as a metal plate, and energy is generated by shear deformation of the viscoelastic body. Viscoelastic dampers adapted to absorb are known.

[0003]

Among the above-mentioned conventional vibration damper devices, the oil damper is very complicated structurally, has a high cost, and is installed in a building. In addition to adjustment of vibration characteristics, maintenance such as inspection, repair, and replacement of parts is extremely difficult and not practical. On the other hand, a damper using a viscoelastic body utilizes the shear deformation characteristics of the viscoelastic body, and can be configured simpler, smaller and more economically than an oil damper, and can be used for inspection and other purposes. In recent years, research and development for practical use as a vibration damper for a fixed structure such as a building has been rapidly promoted because maintenance is easy.

Meanwhile, in a vibration damper device using a viscoelastic body, there is a limit to the deformation characteristics of the vibration damper formed by bonding a viscoelastic body between rigid plates such as a metal plate. If a load exceeding the maximum seismic energy assumed at the time of the seismic design is applied, the damper itself will be damaged, and it will no longer be possible to exhibit the specified damping function for subsequent use There is. If such a situation occurs, replace the entire damping device, or replace the entire frame of a structural frame that uses a damping device such as a brace. There is a problem that it may cause a considerable economic burden if necessary.

[0005] The present invention has been made in view of the above-described circumstances, and by appropriately combining and using a vibration damper and a joining member for assembling and using the damper with a frame for a structure, a predetermined damping is achieved. If a load exceeding the expected energy is applied while fully exhibiting vibration performance, protect the damping damper from damage and maintain the vibration damping function as specified by economical means in subsequent use. It is an object of the present invention to provide a vibration damper device that can perform the vibration control.

[0006]

In order to achieve the above object, a vibration damper device according to the present invention is provided between at least one pair of rigid plate members which are opposed to each other in an axially parallel or substantially parallel state. Vibration dampers with a viscoelastic body bonded and interposed, and both ends in the axial direction of the vibration dampers,
What is claimed is: 1. A vibration damper device comprising: a connecting member fixedly connected to each of opposing portions of a structural frame, wherein said connecting members have a proof strength smaller than a proof strength of said vibration damper. It is characterized by having.

According to the present invention having the above-described structure, the strength of the joining member fixedly connected to both axial ends of the vibration damper using the viscoelastic body is made smaller than the strength of the vibration damper. If the load in the energy range assumed at the time of the seismic design of the structure such as wind pressure or small earthquake acts,
While absorbing energy by the shear deformation of the viscoelastic material that constitutes the damping damper and fully exhibiting the specified damping function, the largest earthquake energy assumed during the seismic design of the structure, that is, the damping damper When a load exceeding the energy close to the proof stress is applied, the joint member absorbs energy by yield deformation to protect the damping damper from being damaged. It can be used continuously to demonstrate its function, and it can reduce the economic burden of replacing the whole damping device, replacing the frame for the structure using the damper device or significantly repairing it. it can.

The two joining members in the vibration damper device having the above structure may be made of any one of low yield point steel, ordinary steel and high tensile steel as described in claim 2. In particular, it is desirable to constitute from a low yield point steel excellent in energy absorption performance due to yield deformation of the joining member when a load exceeding the assumed energy is applied,
It is possible to prevent breakage of the damping damper (protection effect) and also suppress breakage of the joining member itself, thereby improving the resilience of the entire damper device.

Further, as a vibration damper in the vibration damper device having the above-mentioned structure, a viscoelastic body is provided between each layer of a plurality of rigid plate members laminated to each other at a minute interval. By using a vibration damper having a multi-layered viscoelastic structure constituted by bonding and interposing, it is possible to increase the degree of freedom for mounting the vibration damper and expand the applicable range of the damper device.

Further, in the vibration damper device having the above-mentioned structure, the joint member made of steel is provided with a cross-section defect portion for concentrating damage at the time of large deformation to a specific portion. By using high-tensile steel with high tensile strength as the joining member, the stiffness of the entire damper device is kept small and the proof strength of the joining member is smaller than that of the damping damper. Is easy to achieve.

The viscoelastic body constituting the vibration damper may be self-adhered to the rigid plate or may be adhered via an adhesive.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing a first embodiment of a vibration damper device according to the present invention, and FIG. 2 is a front view thereof. The vibration damper device 10 according to the first embodiment is of a brace type, and has a viscoelastic material between a pair of strip-shaped rigid plate materials 1 and 1 such as a pair of metal plates opposed to each other in an axially parallel state. Vibration damper 3 formed by laminating two sets of single-layer viscoelastic dampers 3A and 3B with adhesive 2 interposed therebetween and integrally connected via bolts and nuts 5 and 5.
And joining members 4 and 4 fixedly connected to both ends in the axial direction of the vibration damper 3 via bolts and nuts 6 and 6.

In the vibration damper device 10 having the above structure, the joining members 4 and 4 are made of low-yield point steel, so that the strength of the joining members 4 and 4 is reduced by the strength of the vibration damper 3. It is configured to have a smaller proof stress. The viscoelastic bodies 2 in each of the viscoelastic dampers 3A and 3B are mainly composed of a polymer material containing natural rubber, synthetic rubber, and silicone rubber, and are mixed with a suitable amount of a crosslinking agent and the like. Have been. Further, even when the pair of rigid plate materials 1 and 1 and the viscoelastic body 2 are bonded via an adhesive, they are self-adhered without using an adhesive by using the surface adhesive force of the viscoelastic body 2. May be either.

The brace type vibration damper device 10 according to the first embodiment configured as described above is shown in FIGS.
As shown in FIG. 6, for example, it is installed diagonally between the upper end of a column 8 and a beam 9 constituting a building frame 7 and is used to reinforce the frame 7. Then, in these use states, when a load action in the energy range assumed at the time of seismic design of the building such as wind pressure or a small earthquake, the viscoelastic bodies 2 and 2 of the two sets of viscoelastic dampers 3A and 3B constituting the vibration damper 3 are used.
While absorbing the energy due to the shear deformation of the steel and fully exhibiting the specified vibration damping function, when the load action exceeds the maximum seismic energy assumed at the time of the seismic design of the building, the two joints composed of low yield point steel The members 4, 4 absorb energy by yield deformation to protect the damping damper 3 from being damaged, and continue to use the damping damper 3 so as to exert a predetermined damping function thereafter. It is possible to do. Here, the outer end portions of the joining members 4 and 4 are formed in various shapes according to the frame configuration of the brace as shown in FIGS.

In the brace type vibration damper device 10 according to the first embodiment, the vibration damper 3 includes the viscoelastic body 2 between the band-shaped rigid plate materials 1 such as a pair of metal plates. Although two sets of viscoelastic dampers 3A and 3B of a single layer with an adhesive layer interposed therebetween are laminated and integrally connected via bolts and nuts 5 and 5, as shown in FIGS. A pair of visco-elastic dampers 3 in which visco-elastic bodies 2 and 2 are respectively interposed between three strip-shaped rigid plate members 1...
The damper 3 made of A may be used.

FIGS. 9 to 11 are a side view and a front view showing a second embodiment of the vibration damper device according to the present invention. Vibration damper device 2 according to the second embodiment
Reference numeral 0 is also a place type, and is a two-layer structure in which viscoelastic bodies 2 and 2 are respectively bonded and interposed between three strip-shaped rigid plate materials 1... A vibration damper 3 comprising a set of viscoelastic dampers 3A;
The vibration damper 3 is composed of joining members 4 and 4 fixedly connected to both ends in the axial direction via bolts and nuts 6 and 6, and the joining members 4 and 4 are made of high-tensile steel. In addition, as shown in FIG. 9, a plurality of long holes 5a are intermittently provided in the high-tensile steel joining members 4 and 4 in the width direction as cross-sectional defective portions 5 for concentrating damage at the time of large deformation at specific locations. As shown in FIG. 10, or as shown in FIG.
The joint members 4 and 4 have a proof strength smaller than the proof strength of the vibration damper 3.

The brace-type vibration damper device 20 according to the second embodiment having the above-described structure is also similar to that of the first embodiment, as shown in FIGS. It is used to reinforce the skeleton 7 by being installed diagonally between the upper end of the column 8 and the beam 9 constituting the skeleton 7, and is usually used due to the presence of the high-tensile steel joining members 4 and 4. When a load exceeding the maximum seismic energy assumed at the time of the seismic design of the building is applied while maintaining the rigidity of the entire damper device, stress concentrates on the cross-sectional defect 5 formed in both joint members 4 and 4. Then, the energy is absorbed by the yield deformation of the joining members 4 and 4 along the cross-section defect portion 5 to prevent the damping damper 3 from being damaged. Even after that, the specified vibration suppression function is activated It is possible to continuously used in order to.

FIGS. 12 and 13 are a side view and a front view showing a third embodiment of a vibration damper device according to the present invention. Vibration damper device 3 according to the third embodiment
Reference numeral 0 denotes a stud / wall type, which is a single layer in which a viscoelastic body 2 is bonded and interposed between a pair of rectangular plate-shaped rigid plate materials 1 and 1 such as a pair of metal plates opposed to each other in an axially parallel state. Vibration damper 3 made by laminating two sets of viscoelastic dampers 3A and 3B and connecting them together via bolts and nuts 5
And joining members 4, 4 fixedly connected to both ends in the axial direction of the vibration damper 3 via bolts and nuts 6, 6. The joining members 4, 4 are made of low yield point steel. With this configuration, the joint members 4 and 4 have a proof strength smaller than the proof strength of the vibration damper 3.

FIGS. 14 and 15 show three studs / wall type damping devices 3 in the stud / wall type damping device 30 according to the third embodiment, which are stacked in parallel to each other at a small interval. The vibration damper is composed of a two-layer set of viscoelastic dampers 3A in which viscoelastic bodies 2 and 2 are respectively interposed between adjacent rectangular plate-shaped rigid plate materials 1. Is a modified example of the third embodiment in which the joint members 4 and 4 are made of low yield point steel so that the proof stress of the joining members 4 and 4 is smaller than the proof stress of the vibration damper 3. Although not shown, the third
Stud / wall type vibration damper device 3 according to the embodiment of the present invention
At 0, reinforcing ribs are provided on the outer surfaces of the rectangular plate-shaped rigid plate members 1, 1 located on both outer sides in the layer thickness direction of the vibration damper 3, or the entire periphery of the viscoelastic bodies 2, 2 is covered by the plate members. The modified structure described above may be adopted.

The stud / wall type vibration damper device 30 according to the third embodiment and the modified example thereof configured as described above, as shown in FIG. Between the adjacent columns 8 and 8, vertically interposed between the beams 9.9 vertically adjacent to each other, and fixedly interposed in the intermediate portion of the stud 11 for reinforcing the skeleton 7, or as shown in FIG. Structural columns 8, 8 and beams 9 vertically adjacent to each other
9 is used by being fixedly interposed in a part of the wall 13 framed in the opening 12 surrounded by the opening 9 or by being fitted and fixed in the opening 12 so as to constitute the entire surface of the wall 13 as shown in FIG. Is done. Then, in these use states, when a load is applied within the energy range assumed at the time of the seismic design of the building such as wind pressure or a small earthquake, two sets of viscoelastic dampers 3A and 3B or two sets of viscoelastic dampers constituting the vibration damper 3 are used. At the time of load action exceeding the maximum seismic energy assumed at the time of the seismic design of the building, while absorbing the energy by the shear deformation of the viscoelastic bodies 2 and 2 of the elastic damper 3A and sufficiently exerting the predetermined vibration damping function, The joint members 4 and 4 made of the low yield point steel absorb energy by yield deformation to protect the damping damper 3 from being damaged.
Can be continuously used to exhibit a predetermined vibration damping function even thereafter.

FIGS. 19 to 21 are a side view and a front view showing a fourth embodiment of the vibration damper device according to the present invention. The vibration damper device 40 according to the fourth embodiment is also a stud / wall type, and has three rectangular plate-like rigid plate members 1 stacked and arranged in parallel with each other with a small space therebetween.
.. Vibration damper 3 comprising a pair of viscoelastic dampers 3A in which viscoelastic bodies 2 and 2 are respectively interposed between adjacent.
And joining members 4, 4 fixedly connected to both ends in the axial direction of the vibration damper 3 via bolts and nuts 6, 6. The two joining members 4, 4 are made of high-tensile steel. And high-strength steel joining members 4, 4
As shown in FIG. 19, a plurality of long holes 5 are used as cross-sectional defective portions 5 for concentrating damage at the time of large deformation at specific locations.
a is formed intermittently in the width direction, or as shown in FIG. 20, a pointed cut portion 5b is formed at both end portions in the width direction to control the proof stress of the joining members 4 and 4. It is configured to have a proof stress smaller than the proof stress of the vibration damper 3.

The stud / wall type vibration damper device 40 according to the fourth embodiment having the above-described configuration is also similar to the third embodiment, as shown in FIGS. It is used to reinforce the frame 7 by interposing or fitting between the adjacent structural columns 8, 8 and the upper and lower adjacent beams 9, 9 constituting the frame 7 for a building. When a load exceeding the maximum seismic energy assumed at the time of the seismic design of the building is applied while maintaining the rigidity of the whole damper device large due to the presence of the fourth and fourth members, the cross-sectional defects formed in both joint members 4 and 4 The stress is concentrated on the portion 5 to absorb the energy by the yield deformation of the joining members 4 and 4 along the cross-section defective portion 5 to prevent the damping damper 3 from being damaged. After that, damping damper 3 It can have can be continuously used so as to exhibit a predetermined damping function.

The vibration damper device according to the present invention comprises:
It is ideal for seismic reinforcement of buildings, such as braces for building frameworks, studs and wall reinforcement, and renovation.However, even if it is used by interposing it at the reinforcement point of any fixed structure other than the building, A similar damping effect can be achieved.

[0024]

As described above, according to the present invention, a vibration damper for absorbing energy by utilizing the shear deformation of a viscoelastic body and a joining member for joining the vibration damper to a structural frame. When a load within the energy range assumed at the time of the seismic design of the structure, such as wind pressure or a small earthquake, is applied by properly combining the proof strength with the When a load exceeding the maximum scale seismic energy assumed during the seismic design of the structure, that is, an energy close to the strength of the damper, acts on the damper due to the energy absorption due to the yield deformation of the joint members. The damper, which is expensive due to the use of a viscoelastic body, is connected so that the specified damping function can be achieved even after a large load is applied. To be able to use. Therefore, it is possible to reduce the economical burden of replacing the entire damping device or replacing or significantly repairing a structural frame using the damper device, so that the predetermined damping function can be achieved over a long period of time. It has the effect that it can be maintained economically.

In particular, by adopting the configuration as described in claim 3, the degree of freedom for mounting the vibration damper can be increased and the applicable range of the damper device can be expanded.

Further, when the joining member is made of a steel material as described in claim 4, the joining member is provided with a cross-sectional defect portion for concentrating damage at the time of large deformation at a specific location, thereby pulling the joining member as a tensile member. Using a high-strength steel with high proof strength to reduce the rigidity reduction rate of the entire damper device, and easily achieve the protection effect of the vibration damper by making the proof strength of the joining members smaller than the proof strength of the vibration damper. Can be.

[Brief description of the drawings]

FIG. 1 is a side view showing a first embodiment of a vibration damper device according to the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a schematic side view showing an example of a use state of the vibration damper device according to the first embodiment.

FIG. 4 is a schematic side view showing another example of a use state of the vibration damper device according to the first embodiment.

FIG. 5 is a schematic side view showing another example of a use state of the vibration damper device according to the first embodiment.

FIG. 6 is a schematic side view showing another example of a use state of the vibration damper device according to the first embodiment.

FIG. 7 is a side view showing a modified example of the first embodiment of the vibration damper device according to the present invention.

FIG. 8 is a front view of FIG. 7;

FIG. 9 is a side view showing a second embodiment of the vibration damper device according to the present invention.

FIG. 10 is a side view showing a modification of the vibration damper according to the second embodiment.

FIG. 11 is a front view of FIGS. 9 and 10;

FIG. 12 is a side view showing a third embodiment of the vibration damper according to the present invention.

FIG. 13 is a front view of FIG.

FIG. 14 is a side view showing a modification of the vibration damper device according to the third embodiment.

FIG. 15 is a front view of FIG.

FIG. 16 is a schematic side view showing an example of a use state of the vibration damper device according to the third embodiment and a modified example thereof.

FIG. 17 is a schematic side view showing another example of the usage state of the vibration damper device according to the third embodiment and its modified example.

FIG. 18 is a schematic side view showing another example of a use state of the vibration damper device according to the third embodiment.

FIG. 19 is a side view showing a fourth embodiment of the vibration damper device according to the present invention.

FIG. 20 is a side view showing a modified example of the vibration damper device according to the fourth embodiment.

FIG. 21 is a front view of FIGS. 19 and 20;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rigid plate material 2 Viscoelastic body 3 Vibration damper 4 Joining member 5 Cross-section defect part 10, 20, 30, 40 Vibration damper device

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) E04B 1/58 E04B 1/58 G F16F 7/12 F16F 7/12 15/02 15/02 F K 15/08 15 / 08 D (72) Inventor Kazuaki Mitsunari 12-20 Ikeda-cho, Nishinomiya-shi, Hyogo Pref.Shin Inagumi Co., Ltd. (72) Inventor Shinsuke 12-20 Ikeda-cho, Nishinomiya-shi, Hyogo Pref. (72) Inventor Shoshiro Fuchikawa 1-2-6 Minami-Aoyama, Minato-ku, Tokyo Nissan Construction Co., Ltd. (72) Inventor Mutsumi Nakade 1-2-6 Minami-Aoyama, Minato-ku, Tokyo Nissan Construction Co., Ltd. (72) Inventor Takayuki Wakai 1-17-18 Edobori, Nishi-ku, Osaka-shi, Osaka Toyo Tire & Rubber Co., Ltd. (72) Inventor Hiroaki Ichinose 1-17-18 Edobori, Nishi-ku, Osaka-shi, Osaka Toyo Tire & Rubber F term (reference) 2E125 AA04 AA07 AA14 AA33 AA54 AB00 AC14 AC21 AD00 AE13 AE15 AG03 AG07 AG12 BB09 BC05 BD01 CA05 EA25 3J048 AA06 AC01 BD08 DA02 DA03 DA04 EA38 3J06 6 AA26 BA04 BB04 BC05 BD05 BE06

Claims (4)

[Claims] 1. A vibration damper in which a viscoelastic body is bonded and interposed between at least one pair of rigid plate members facing each other in a state of being parallel or substantially parallel to each other along an axial direction, and an axial direction of the vibration damper. What is claimed is: 1. A vibration damper device, comprising: a connecting member fixedly connected to each of opposite portions of a structural frame, at both ends thereof, wherein said both connecting members have a proof stress smaller than a proof stress of said vibration damper. A damping device characterized by having a configuration as described above. 2. The vibration damper device according to claim 1, wherein the both joining members are made of any one of low yield point steel, ordinary steel, and high tensile steel. 3. The vibration damper according to claim 1, wherein the vibration damper is formed by bonding a viscoelastic body between the respective layers of a plurality of rigid plate members laminated one another at a minute interval. Vibration damper device. 4. The vibration damper device according to claim 2, wherein both of the joining members made of the steel material are provided with a cross-section defect portion for concentrating damage at the time of large deformation to a specific location.