JP2000120779A - Vibration damper device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration damper device which causes no breakage even under fluctuation of temperature, surely and sufficiently shows specified vibration control effect, and reduces manufacturing cost by decreasing temperature dependency in equivalent rigidity and attenuation performance with combination of the existing various viscous bodies. SOLUTION: A rigid plate member 1 can be connected to one of opposed portions of structural frames. Rigid plate members 2, 2 can be connected to the other of the opposed portions and are arranged on both sides of the rigid plate member 1 in this thickwise direction in parallel to its axial direction or substantially in parallel thereto. Viscous bodies 3A, 3B having different characterstics are arranged between the plate member 1 and the plate members 2, 2, which viscous bodies have different temperature dependent balance in rigidity and attenuation performance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration damper device mainly used for reinforcing or rehabilitating a reinforced concrete (RC) or steel frame (S) middle-high-rise building. The present invention relates to a damping device capable of exhibiting a damping performance with respect to a disturbance that causes shear deformation such as interlayer displacement in a building such as a wind pressure or an earthquake.

[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 members such as a metal plate, and vibration energy is generated by shear deformation of the viscoelastic body. There is known a viscoelastic damper configured to absorb the vibration.

[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.

In a vibration damper using this viscoelastic body, the material characteristics of the viscoelastic body are directly reflected in the characteristics of the damper device. It is very important to select the viscoelastic material in order to exhibit the vibration damping performance adapted to the conditions.

By the way, viscoelastic materials generally have strain dependence, frequency dependence (speed dependence), and temperature dependence. These viscoelastic materials are used to reduce disturbance energy such as earthquakes in a vibration damper device. In order to use it as an absorbing material, it is important that all of the strain dependence, frequency dependence (speed dependence), and temperature dependence are small, but materials that satisfy all of these are still being developed. Not. That is, as the type of the viscoelastic material, those having the characteristics indicated by to in the characteristic diagram of FIG. 7 showing the temperature dependence of the equivalent rigidity and the characteristic diagram of FIG. Although it is present, both the equivalent rigidity and the damping property are not satisfactory in the practical use temperature range (0 to 50 ° C.).

Accordingly, as shown in FIG. 9 (a), a pair of rigid plate members 12, such as a pair of metal plates or the like, which can be joined to opposing portions of the structural frame and are positioned parallel or almost parallel to each other. For example, in a vibration damper device 13 configured by interposing a single layer of a viscoelastic body 11 having material characteristics as shown by the shades in FIGS. 7 and 8 as shown in FIG. Each practical use temperature (0 ℃,
As is clear from the change in the elliptic loop hysteresis characteristics at 20 ° C. and 40 ° C.), the damping property can be kept largely constant irrespective of the temperature change, but the equivalent stiffness rapidly increases and decreases due to the temperature change. However, when used in an area where the temperature difference between the temperatures is large, and particularly when the temperature is high and a deformation force due to a disturbance such as an earthquake is applied, the viscoelastic body may be broken and the damper device itself may be destroyed. .

Further, as shown in FIG. 10 (a), a single layer of a viscoelastic body 11 having material characteristics shown in FIG. 7 and FIG. In the vibration damper device 14 configured by interposing an adhesive, each of the practical use temperatures (0 ° C.,
As is clear from the change in the elliptic loop hysteresis characteristics at 20 ° C. and 40 ° C.), the equivalent rigidity can be kept largely constant irrespective of the temperature change, but the damping property sharply increases and decreases due to the temperature change. In the case of the viscoelastic body 11 which fluctuates, and particularly has a material property, the absolute value of the damping property is originally small, and furthermore, the damping property decreases with the temperature rise.
When used in an area where the temperature difference between the temperatures is large, particularly when the temperature is high, when a deformation force due to a disturbance such as an earthquake is applied, the damping performance is insufficient and a predetermined vibration damping effect cannot be exerted.

As described above, all of the conventional damping devices for vibration damping using only a single layer of a viscoelastic body have a large temperature dependence of equivalent rigidity or damping property, so that they are used in an area having a large temperature difference. In this case, there is a trade-off problem that a satisfactory result cannot be obtained with respect to either the equivalent rigidity or the damping performance.

In addition, it is conceivable to control the characteristics by adjusting the compounding ratio of the viscoelastic material depending on the use and the place of use of the vibration damper device. In this case, it takes a great deal of time to adjust the compounding ratio. Not only is it necessary, but the cost is unavoidable due to the increase in the number of manufacturing steps and the complexity, and yet the development of the above-described viscoelastic body having a small temperature dependence of equivalent rigidity and damping has naturally been limited.

[0010] The present invention has been made in view of the above circumstances, and by using a combination of a plurality of existing viscoelastic bodies, the temperature dependence of equivalent stiffness and damping properties can be reduced to reduce the temperature change. When using in places with large
An object of the present invention is to provide a vibration damper device capable of reliably and sufficiently exhibiting a predetermined vibration damping effect without causing breakage of a viscoelastic body, and capable of reducing manufacturing costs. And

[0011]

In order to achieve the above object, a vibration damper device according to the present invention comprises a rigid plate material which can be joined to one of the opposing portions of a frame for a structure, and a rigid plate material which is joined to the other of the opposing portions. A viscoelastic body is interposed between the rigid plate and the rigid plate, which is disposed on both sides in the thickness direction of the rigid plate and is positioned parallel or almost parallel to the rigid plate in the axial direction. A vibration damper device comprising: as a viscoelastic body located on both sides of the rigid plate, a viscoelastic body having different characteristics having different temperature-dependent balances of rigidity and damping. It is a feature.

According to the present invention having the above-described structure, the above-described items (1) to (4)
Among a plurality of existing types of viscoelastic materials having the characteristics shown in, for example, or or, and the like, the rigidity and damping temperature corresponding to the conditions such as the area of use and the application location of the structure By appropriately combining and using viscoelastic materials of different characteristics with different dependency balances,
Taking advantage of the characteristics of each viscoelastic body, it is possible to reduce the temperature dependence of the equivalent rigidity and damping properties of the entire damper device. The predetermined vibration damping effect can be reliably and sufficiently exerted without causing the viscoelastic body to break or the like. In addition, since the characteristics are controlled by the combination of the existing viscoelastic bodies, it is possible to reduce the time and labor required for the compounding and the manufacturing cost as compared with the case where the compounding ratio of the materials is adjusted.

Both of the viscoelastic bodies having different characteristics in the vibration damper device having the above-mentioned structure are composed mainly of a polymer material containing natural rubber, synthetic rubber, and silicone rubber. By mixing a suitable amount of a crosslinking agent and the like, a viscoelastic body having the characteristics shown in FIGS. As at least one of the viscoelastic bodies located on both sides of the rigid plate,
As described in claim 3, the characteristic width of the viscoelastic body is increased by using a laminate of two or more different viscoelastic bodies having different temperature-dependent balances of rigidity and damping property. Therefore, the seismic design using the damper in the practical use temperature range can be easily and optimized.

[0014] Further, in the vibration damper device having the above structure, the two viscoelastic bodies may have the same layer thickness as described in claim 4, but may have unequal thickness as described in claim 5. In particular, if the layer thickness is unequal, viscoelastic materials can be used for disturbances of any scale, from disturbances with small deformations such as wind pressure and small earthquakes to disturbances with large deformations such as large earthquakes. It is possible to surely and stably exhibit and maintain a predetermined vibration-damping performance without incurring performance degradation due to breakage or distortion.

Further, the two viscoelastic bodies in the vibration damper device having the above configuration may be self-adhered to the rigid plate material as described in claim 6, and as described in claim 7, You may adhere | attach through an adhesive agent.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partially broken perspective view showing a first embodiment of a vibration damper device according to the present invention, and FIG.
(A) is a sectional view thereof. The vibration damper device 10 according to the first embodiment includes, for example, a joint between an upper end portion of a column and a beam and a joint portion of a lower end portion of a column and a base constituting a building frame (not shown). A strip-shaped rigid plate 1 such as a metal plate that can be joined to one end of a brace as a reinforcing member that is installed obliquely over the other, and a gusset plate that is fixed to the other joint and can be joined to the rigid member. Plate 1
Between the rigid plate members 2 and 2 such as metal plates which are disposed on both sides in the thickness direction of the rigid plate member and are opposed to the rigid plate member 1 in the axial direction in parallel with each other. The basic configuration is that viscoelastic bodies 3A and 3B having the same are interposed by adhesion.

The viscoelastic bodies 3A and 3B are both
As shown in FIG. 7 and FIG. 8, the rigidity and damping temperature are obtained by mixing a polymer material containing natural rubber, synthetic rubber, and silicone rubber as a main component and a crosslinking agent in an appropriate amount. A plurality of types having different dependencies have been manufactured. Further, each of the rigid plate materials 1, 2, 2 and each of the viscoelastic bodies 3A, 3B may be bonded via an adhesive.
Self-adhesion may be performed without using an adhesive by using the surface adhesive force of the viscoelastic bodies 3A and 3B.

In the vibration damper device 10 having the above-described basic configuration, the viscoelastic bodies 3A and 3B located on both sides of the one rigid plate member 1 as shown in FIGS.
It is characterized by using a combination of viscoelastic materials of different characteristics having different temperature-dependent balances of the rigidity and damping property from among a plurality of types having the characteristics shown in the following. The characteristics will be described.

Embodiment 1 FIG. In the first embodiment, in the configuration shown in FIGS. 1 and 2A, a viscoelastic body having characteristics as one viscoelastic body 3A is used, and a viscoelastic body having properties as the other viscoelastic body 3B is used. An elastic body is used. In the case of such a combination example, each practical use temperature (0 ° C., 20 ° C.,
As is clear from the change in the elliptic loop hysteresis characteristics at 40 ° C.), it is possible to maintain both the damping property and the equivalent rigidity in the practical use temperature range and exhibit a very excellent vibration damping effect. It is suitable for use in areas where the temperature difference is small.

Embodiment 2 FIG. In the second embodiment, in the configuration shown in FIGS. 1 and 2A, a viscoelastic body having characteristics as one viscoelastic body 3A is used and a viscoelastic body having characteristics as the other viscoelastic body 3B is used. An elastic body is used. In the case of such a combination embodiment, the temperature dependence is small, and while maintaining a moderate damping property sufficient to exhibit a predetermined vibration damping effect below the practical use temperature range, the equivalent rigidity is largely maintained, In particular, it is possible to suppress the viscoelastic body from breaking at a low temperature and exhibit a predetermined vibration damping effect, and it is suitable for use in an area where the temperature difference of the air temperature is large.

Embodiment 3 FIG. In the third embodiment, as shown in FIG. 3, a viscoelastic body 3A-1 having properties as one viscoelastic body 3A and a viscoelastic body 3A-2 having properties are bonded and used. With the other viscoelastic body 3
A material obtained by bonding and laminating a viscoelastic body 3B-1 having characteristics as a viscoelastic body 3B-1 having characteristics as B is used. Here, each viscoelastic body 3A-1, 3A-
2, 3B-1, and 3B-2 have the same layer thickness, and ｛(D1
/ 2) = (D2 / 2)}.

Embodiment 4 FIG. In the fourth embodiment, as shown in FIG. 4, a viscoelastic body having properties as one viscoelastic body 3A is used in a single layer, and a viscoelastic body 3B having properties as the other viscoelastic body 3B. A viscoelastic body 3B-2 having a property of -1 is bonded and laminated. Here, the layer thickness of the viscoelastic body 3A is D1,
The layer thickness of the viscoelastic bodies 3B-1 and 3B-2 is (D2 / 2).

As in the first embodiment exemplified in the above Examples 1 to 4, different types of materials having different temperature-dependent balances of rigidity and damping depending on conditions such as a use area and an application place of a structure. By combining the viscoelastic bodies 3A and 3B having characteristics, it is possible to make use of the characteristics of each viscoelastic body and reduce the temperature dependence of the equivalent rigidity and damping property of the entire damper device.

FIG. 5 is a sectional view showing a second embodiment of a vibration damper according to the present invention. The basic configuration of a vibration damper 10 according to the second embodiment is the same as that of the first embodiment. The difference is that the layer thickness D2 of the other viscoelastic body 3B is smaller than the layer thickness D1 of the one viscoelastic body 3A. Since other configurations are the same as those of the first embodiment, the corresponding portions are denoted by the same reference numerals and description thereof will be omitted.

FIG. 6 is a cross-sectional view showing a modified example of the second embodiment of the vibration damper device according to the present invention. In the vibration damper device 10 according to this modified example, the viscoelastic material on the side where the layer thickness D1 is large is shown. 3A two-layer viscoelastic body 3 having different properties
A-1 and 3A-2 were bonded and laminated. Since other configurations are the same as those of the second embodiment, the corresponding portions are denoted by the same reference numerals and description thereof will be omitted.

According to the vibration damper device 10 according to the second embodiment illustrated in FIGS. 5 and 6, it is possible to reduce the temperature dependence of the equivalent rigidity and damping property of the entire damper device. In addition, with respect to disturbance accompanied by small deformation such as wind pressure and small earthquake, the disturbance energy is absorbed by shear deformation of the viscoelastic body 3B on the smaller side of the layer thickness D2, and large deformation such as large earthquake is prevented. With respect to the accompanying disturbance, by absorbing the disturbance energy by the shear deformation of the viscoelastic body 3A on the side with the large layer thickness D1, the disturbance of any scale from small deformation to large deformation can be achieved by using a single damper device. On the other hand, a predetermined vibration damping performance can be stably exhibited, and the performance can be maintained for many months.

The vibration damper according to the present invention is
It can be used not only between the brace of the building frame and the gusset plate, but also at any place that requires seismic strengthening and renovation of the building, such as studs and wall reinforcement.

[0028]

As described above, according to the present invention, among the existing plural types of viscoelastic materials, for example, FIGS.
Use appropriate combinations of viscoelastic materials of different characteristics that differ in the temperature-dependent balance of rigidity and damping according to the conditions such as the area of use and the application place of the structure, such as Accordingly, the characteristics of the combined viscoelastic bodies can be utilized to reduce the temperature dependence of the equivalent rigidity and damping property of the entire damper device. As a result, when used in a place where the temperature change is small, both the equivalent rigidity and the damping property in the practical use temperature range are kept large to exhibit a very excellent vibration damping effect, and also used in a place where the temperature change is large. In some cases, the viscoelastic body has a large equivalent stiffness that is not broken below the practical use temperature range, while exhibiting a sufficient vibration damping effect. A damping effect can be obtained. Moreover, since the characteristics are controlled by the combination of the existing viscoelastic bodies, there is an effect that the compounding labor and the manufacturing cost can be reduced as compared with those in which the mixing ratio of the materials is adjusted.

In particular, by adopting the unequal layer thickness structure as described in claim 5, in addition to the above-described effects, large deformation such as a large earthquake can be prevented from disturbance accompanied by small deformation such as a wind pressure or a small earthquake. With respect to disturbances of any scale up to the accompanying disturbance, there is also an effect that predetermined vibration damping performance can be reliably and stably exhibited and maintained without deteriorating performance due to breakage or distortion of the viscoelastic body.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing Examples 1 and 2 according to a first embodiment of a vibration damper device according to the present invention.

FIG. 2A is a cross-sectional view of the vibration damper according to the first embodiment;
(B) shows the respective practical operating temperatures (0 ° C., 20 ° C., 4 ° C.).
It is an elliptic loop hysteresis characteristic figure in (0 degreeC).

FIG. 3 is a sectional view showing Example 3 according to the first embodiment.

FIG. 4 is a sectional view showing Example 4 according to the first embodiment.

FIG. 5 is a sectional view showing a second embodiment of the vibration damper device according to the present invention.

FIG. 6 is a sectional view showing a modification of the second embodiment of the vibration damper according to the present invention.

FIG. 7 is a characteristic diagram showing the temperature dependence of the equivalent rigidity of a plurality of existing viscoelastic materials.

FIG. 8 is a characteristic diagram showing the temperature dependence of damping properties of existing plural types of viscoelastic materials.

9A is a cross-sectional view of a vibration damper device using one of the existing viscoelastic bodies in a single layer, and FIG. 9B is a diagram showing respective practical operating temperatures (0 ° C., 20 ° C., and 40 ° C.). 11) is an elliptic loop history characteristic diagram in FIG.

FIG. 10A is a cross-sectional view of a vibration damper device using a single layer of another existing viscoelastic body, and FIG. 10B is a diagram showing respective practical operating temperatures (0 ° C., 20 ° C., It is an elliptic loop hysteresis characteristic diagram at 40 degreeC).

[Explanation of symbols]

1, 2 rigid plate materials 3A, 3B, 3A-1, 3A-2, 3B-1, 3B-2
Viscoelastic body 10 Vibration damper

 ──────────────────────────────────────────────────続 き Continued on front page (72) Inventor Kazuaki Mitsunari 12-20 Ikeda-cho, Nishinomiya-shi, Hyogo Arai Gumi Co., Ltd. (72) Inventor Shinsuke Namba 12-20 Ikeda-cho, Nishinomiya-shi, Hyogo Stock (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 (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, Osaka Rubber industry F term (reference) 3J048 AA01 AC05 AD05 BA08 BB01 BD04 BD08 EA38 3J066 AA01 BA01 BB04 BC01 BE06

Claims (7)

[Claims] 1. A rigid plate material that can be joined to one of opposed portions of a structural frame and a rigid plate that can be joined to the other of the opposed portions and that are disposed on both sides in the thickness direction of the rigid plate material. What is claimed is: 1. A vibration damper device comprising a viscoelastic body bonded and interposed between rigid plate members opposed to each other in parallel or substantially parallel along an axial direction, wherein the viscoelastic members are located on both sides of the rigid plate member. As
A vibration damper device comprising a combination of viscoelastic bodies of different characteristics having different temperature-dependent balances of rigidity and damping. 2. The vibration damper device according to claim 1, wherein both of the viscoelastic bodies having different characteristics are composed mainly of a polymer material containing natural rubber, synthetic rubber and silicone rubber. 3. At least one of the two viscoelastic bodies is formed by further laminating two or more viscoelastic bodies having different temperature-dependent balances of rigidity and damping properties. 3. The vibration damper device according to 1 or 2. 4. The vibration damper according to claim 1, wherein said viscoelastic bodies have the same layer thickness. 5. The vibration damper according to claim 1, wherein said viscoelastic bodies have unequal layer thicknesses. 6. The damping device according to claim 1, wherein said viscoelastic bodies are self-adhered to a rigid plate. 7. The vibration damper according to claim 1, wherein the viscoelastic bodies are bonded to a rigid plate via an adhesive.