JP2001049893A - Vibration isolation structure by viscous-body wall damper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide vibration isolation structure in which a laminated rubber is used as a connection between a vibration isolation layer and a viscous-body wall damper. SOLUTION: Vibration isolation structure 1 is constituted by installing the viscous-body wall damper 8 composed of a plate type viscous-body vessel 6, in which a viscous body 5 is housed, and a viscous resistance plate 7 dipped into the viscous body 5 in the vessel 6 to a vibration isolation layer comprising the structures 2, 3 of upper and lower floors. Either one of the viscous-body vessel 6 or the viscous resistance plate 7 is fixed onto either structure 2 or 3 in the upper and lower floors, and the other is mounted on another structure by arranging laminated rubbers 10 having a constitution in which the rubbers have flexibility in deformation in the out-of-plane direction and deformation in the in-plane direction is transmitted as it is in the horizontal direction in the in-plane direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a planographic viscous body container in which a viscous body is accommodated in seismic isolation layers composed of upper and lower structures, and a viscous resistance plate immersed in the viscous body in the container. The present invention belongs to the technical field of a seismic isolation structure constituted by installing a viscous body wall damper composed of: and, more specifically, to a seismic isolation structure using laminated rubber for the connection between a seismic isolation layer and a viscous body wall damper.

[0002]

2. Description of the Related Art Conventionally, a lithographic viscous body container containing a viscous body and a viscous resistance immersed in the viscous body in the container are placed in a seismic isolation layer composed of upper and lower floor structures such as a beam-column structure. A seismic isolation structure configured by installing a viscous body wall damper made of a plate is disclosed in, for example, Japanese Patent Publication No. 5-22026, and
Various publications such as Japanese Patent Application No. 0-102820 are known.

As shown in FIGS. 7 and 8, the “vibration control wall” disclosed in FIG. 1 of Japanese Patent Publication No. 5-22026 has a structure in which the viscous resistance plate 7 of the viscous body wall damper 8 ′ The structure 2 on the floor, the viscous body container 6, and the structure 3 on the lower floor are rotatably mounted on hinges a and b so as to be rotatable around a horizontal axis during interlayer deformation in an out-of-plane direction. It is described that this seismic isolation structure is capable of following deformation while rotating the viscous body wall damper 8 ′ during the interlayer deformation in the out-of-plane direction, and can exhibit damping performance not only in the horizontal direction but also in the vertical direction.

Also, the seismic isolation building described in the above-mentioned Japanese Patent Application Laid-Open No. 10-102820 also employs a seismic isolation structure in which a viscous wall damper and upper and lower floor structures are rotatably mounted on a shaft. I have.

Next, the “damping wall” disclosed in FIG. 2 of Japanese Patent Publication No. Hei 5-22026 is disclosed in FIGS.
As shown in the figure, the viscous body container 6 is fixed to the structure 3 on the lower floor, and the viscous resistance plate 7 uses the sleeve c to the guide beam d fixed to the structure 2 on the upper floor in an out-of-plane direction. It is configured to be slidably connected.

Conventionally, "laminated rubber", in which rubber sheets and steel sheets are alternately bonded, is usually arranged vertically, and is used as a bearing of a seismic isolation structure that supports a vertical load of a seismically isolated building with horizontal displacement freely. Widely used (for example, see JP-A-10-184)
It is described in many documents such as Japanese Patent Publication No. 44 and well known.

[0007]

A) In the prior art described above, the viscous body wall damper 8 'can be deformed to follow the interlayer deformation in the out-of-plane direction by the upper and lower hinges a and b. At the time of outward deformation, as shown by the dotted line in FIG. 8, the viscous body wall damper 8 ′ may be inclined at an appropriate angle and the viscous body 5 may leak from the viscous body container 6.

Further, the fact that the viscous body wall damper 8 ′ is inclined as shown by the dotted line in FIG. 8 means that the viscous body container 6 and the viscous resistance plate 7 cause relative displacement also in the vertical direction. Since both of them must be assembled in a configuration capable of vertical displacement, the production is troublesome.

B) In the case of the above prior art, since the viscous body wall damper 8 'is fixedly provided in a vertical posture,
The problem has been improved. However, in general, interlayer deformation of structures on the upper and lower floors is not limited to so-called biaxial directions in an in-plane direction and an out-of-plane direction, and often causes "twist deformation" in which both directions are combined. In that case, there is a possibility that the guide beam d is deformed by the seismic force and becomes inoperable.

As described above, in the conventional seismic isolation structure, it is well-known that the "laminated rubber" is arranged vertically and used as a bearing, but it is not possible to arrange and use it horizontally and horizontally. I do not hear.

Accordingly, an object of the present invention is to solve all of the above problems a) and b), and to transmit the deformation in the in-plane direction as it is to the connection between the seismic isolation layer and the viscous body wall damper. Is used horizontally in the horizontal direction, so that there is almost no resistance in the out-of-plane direction, and no horizontal force is transmitted to the viscous body wall damper. Only horizontal deformation in the in-plane direction is transmitted to the viscous body wall damper. It is an object of the present invention to provide a seismic isolation structure using a viscous body wall damper that can perform stable damping performance and has flexibility against so-called torsional deformation.

A second object of the present invention is to make the viscous resistance plate horizontally displace only in the in-plane direction without vertically displacing the viscous body wall damper, thereby effectively generating a large damping force.
An object of the present invention is to provide a seismic isolation structure using a viscous wall damper.

[0013]

According to a first aspect of the present invention, there is provided a seismic isolation structure using a viscous damper according to the first aspect of the present invention. In a seismic isolation structure configured by installing a viscous body wall damper composed of a planographic viscous body container containing a viscous body and a viscous resistance plate immersed in a viscous body in the container, the viscous body container or One of the resistance plates is fixed to one of the upper and lower structures, and the other has flexibility to deform in the out-of-plane direction, and transmits the in-plane deformation as it is. It is characterized by being arranged horizontally and attached to another structure.

According to a second aspect of the present invention, in the seismic isolation structure using the viscous body wall damper according to the first aspect, one of the viscous body container and the viscous resistance plate constituting the viscous body wall damper is fixed to the structure. A roller support member, and the other is supported by a roller portion of the roller support member such that only horizontal displacement is possible.

According to a third aspect of the present invention, in the seismic isolation structure using the viscous body wall damper according to the first aspect, the laminated rubber comprises:
It is characterized by being arranged horizontally in the in-plane direction between a bracket provided on the structure and a bracket provided on the viscous body wall damper side.

According to a fourth aspect of the present invention, in the seismic isolation structure using the viscous body wall damper according to the first aspect, the laminated rubber comprises:
1 provided on either the structural body or the viscous body wall damper
It is characterized by being arranged horizontally in the in-plane direction between one bracket and brackets provided on both sides sandwiching the bracket on the other.

According to a fifth aspect of the present invention, in the seismic isolation structure using the viscous body wall damper according to the third or fourth aspect, at least two or more laminated rubbers are arranged in an in-plane direction, and the structure and the viscous body wall damper are provided. In addition to being attached to the provided bracket, the structure is further provided with a pushing bracket at a position for pushing the bracket provided on the viscous body wall damper.

According to a sixth aspect of the present invention, in the seismic isolation structure using the viscous body wall damper according to the fifth aspect, an out-of-plane is provided between a boosting bracket provided on the structure and a bracket provided on the viscous body wall damper. A roller for reducing resistance in the direction is provided.

According to a seventh aspect of the present invention, in the seismic isolation structure using the viscous material wall damper according to any one of the third to fifth aspects, only one end face of the laminated rubber is provided on one end surface with respect to the bracket at both ends thereof. And the other end face is attached to the bracket so as to be in insulated contact with the bracket.

According to an eighth aspect of the present invention, in the seismic isolation structure using the viscous body wall damper according to the first aspect, the viscous body wall damper is provided with a guide slot horizontally in an in-plane direction on a viscous resistance plate. A guide pin is provided between the walls of the body container so as to penetrate the guide slot in an out-of-plane direction, and the guide pin has a spacer for keeping a gap between the viscous resistance plate and the viscous body container constant. Is provided.

[0021]

1 to 6 show a first embodiment of the present invention.
9 shows an embodiment of a seismic isolation structure using a viscous body wall damper according to any one of the inventions described in Nos. 1 to 8.

The seismic isolation structure 1 has upper and lower structures 2, 3
A viscous body wall damper 8 composed of a planographic viscous body container 6 containing a viscous body 5 and a viscous resistance plate 7 immersed in the viscous body 5 in the container 6 is installed on the seismic isolation layer 4 made of It will be implemented. In the illustrated example, the viscous body container 6 is fixed substantially vertically to the structure 3 on the lower floor via a mounting beam 9. on the other hand,
The viscous resistance plate 7 has flexibility in out-of-plane deformation, and is attached to the upper-floor structure 2 using a laminated rubber 10 configured to transmit in-plane deformation as it is.

That is, the embodiment shown in FIG. 1 and FIG.
The laminated rubber 10 is horizontally arranged in the in-plane direction between the bracket 12 provided on the upper structure 2 and the bracket 13 provided on the mounting beam 11 of the viscous resistance plate 7.
It is attached by being joined to 2 and 13 (the invention according to claim 3). In FIG. 1, two laminated rubbers 10 are arranged in the in-plane direction, but this shows the simplest embodiment of the present invention.

In the viscous body wall damper 8, a roller support member 20 is provided fixed vertically upward on the side of the viscous body container 6 fixed to the lower structure 3, and a mounting beam of the viscous resistance plate 7 is provided. Eleven flanges are supported by the roller portion 21 of the roller support member 20 so as to be displaceable only in the horizontal direction (the invention according to claim 2). The vertical displacement between the viscous body container 6 and the viscous resistance plate 7 is tightly regulated by the roller support member 20, and both are maintained in a firm relative positional relationship. Then, the displacement in the in-plane direction is reliably transmitted from the structure 2 on the upper floor to the viscous body wall damper 8, and exhibits a stable damping performance. As for the displacement in the out-of-plane direction, the laminated rubber 10 deforms following without resistance (see also FIG. 4 and FIG. 6). Without any trouble, it is fixed to the structure 3 on the lower floor and maintains an upright posture. Therefore, there is no problem that the viscous body 5 spills out. This is the same in the following embodiments.

As shown in FIGS. 1 and 2, the viscous body wall damper 8 is provided with a guide slot 23 horizontally in the in-plane direction of the viscous resistance plate 7. In
A guide pin 24 penetrating the guide slot 23 in an out-of-plane direction is provided, and a guide mechanism for only displacing the viscous resistance plate 7 in the horizontal direction is configured. Further, the guide pin 24 is provided with a spacer 25 for keeping a constant gap between the viscous resistance plate 7 and the viscous body container 6 (the invention according to claim 8). The viscous resistance plate 7 is
Since the displacement in the vertical direction is regulated by the guide slot 23 and the guide pin 24, the rotation of the viscous resistance plate 7 together with the roller support member 20 is prevented,
Only relative displacement in the horizontal direction is allowed. Further, the spacer 25 keeps both gaps in the out-of-plane direction formed by the viscous body container 6 and the viscous resistance plate 7 constant, and effectively generates viscous resistance acting as a damping force. This is similarly performed in the following embodiments (see also FIGS. 3 and 5).

FIG. 3 shows one bracket 14 provided on the structure 2 on the upper floor, and two brackets 15 and 16 provided on both sides of the mounting beam 11 of the viscous resistance plate 7 with the bracket 14 interposed therebetween. This shows an embodiment in which the laminated rubber 10 is horizontally arranged in the in-plane direction and attached to each other (the invention according to claim 4). In FIG. 3, the two laminated rubbers 1
Two pairs of 0 and 10 are arranged in the in-plane direction. In the embodiment of FIG. 3, the pair of the two laminated rubbers 10 and 10 follows the out-of-plane interlayer deformation of the seismic isolation layer 4 by performing a deformation operation as shown by a dotted line in FIG. 4.

In the embodiment shown in FIG. 5, taking into account that the laminated rubber 10 is weak in tensile force, the structure shown in FIG.
An additional pushing bracket 17 is provided at a position for pushing the outer surfaces of the brackets 15 and 16 provided in the first bracket 1 (the invention according to claim 5). As a result, the additional boosting bracket 17 always has the brackets 15 and 16.
To directly transmit the horizontal deformation to prevent the tensile force from acting on the laminated rubber 10. Although illustration is omitted, FIGS. 1 and 2
Similarly, in the embodiment shown in (1), the additional boosting bracket 17 can be provided at a position where the bracket 13 is boosted on the structure 2 on the upper floor.

According to the embodiment shown in FIG. 5, since almost no tensile force acts on the laminated rubber 10 and the deformation in the in-plane direction is transmitted as a compression force, one end face 18 or 1 of the laminated rubber 10 is transmitted.
9 is insulated so as not to be detached from the bracket (for example, by providing ribs on both sides of the bracket so as to restrict only the out-of-plane direction on the insulated end surface of the laminated rubber), and to completely cut off the action of the tensile force. It can also be implemented. Although illustration is omitted, in the embodiment shown in FIGS. 1 and 2 and the embodiment of FIG. 3, especially when a plurality of laminated rubbers 10 are arranged, the operation of the tensile force is sufficiently considered. If the end face of the laminated rubber 10 to be insulated is determined, the operation of the tensile force can be completely cut off similarly (the invention according to claim 7).

As a means for putting the embodiment shown in FIG. 5 into practical use, as shown in FIG. 6, a pushing bracket 17 on the upper structure 2 side and a bracket 15 on the viscous resistance plate 7 side are used.
And rollers 16 for reducing the resistance in the out-of-plane direction are preferably provided between the rollers 22 and 16 (the invention according to claim 6). FIG.
In this embodiment, the rollers 22 are mounted on the brackets 15 and 16, but the roller 22 may be mounted on the side of the pushing bracket 17.

[0030]

According to the first to eighth aspects of the present invention, the seismic isolation structure using the viscous body wall damper transmits the in-plane deformation as it is to the connection between the seismic isolation layer and the viscous body wall damper. The horizontal rubber is used horizontally to realize the above-mentioned breakthrough configuration, so that it follows and deforms in the out-of-plane direction and does not transmit horizontal force to the viscous body wall damper. Only the deformation is transmitted to the same viscous body wall damper to exhibit stable damping performance. Laminated rubber also exhibits flexibility against so-called torsional deformation.

Further, since the viscous body wall damper is not vertically displaced and the viscous resistance plate can be horizontally displaced only in the in-plane direction, a large damping force can be effectively generated.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a seismic isolation structure using a viscous body wall damper according to the present invention.

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a front view showing another embodiment of a seismic isolation structure using a viscous body wall damper according to the present invention.

FIG. 4 is a plan view showing an out-of-plane deformation operation of the laminated rubber portion of FIG. 3;

FIG. 5 is a front view showing still another embodiment of a seismic isolation structure using a viscous body wall damper according to the present invention.

FIG. 6 is an explanatory view showing a planar deformation operation of the laminated rubber portion of FIG. 5 in an out-of-plane direction.

FIG. 7 is a front view showing a seismic isolation structure using a conventional viscous body wall damper.

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

FIG. 9 is a front view showing a conventional seismic isolation structure using different viscous body wall dampers.

FIG. 10 is a side view of FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seismic isolation structure 2 Upper floor structure 3 Lower floor structure 4 Seismic isolation layer 5 Viscous body 6 Viscous body container 7 Viscous resistance plate 8 Viscous body wall damper 9, 11 Mounting beam 10 Laminated rubber 12, 13 Bracket 14, 15, 16 Bracket 17 Bracket for boosting 18, 19 End face of laminated rubber 20 Roller support member 21 Roller part 22 Roller 23 Guide slot 24 Guide pin 25 Spacer

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroshi Hayami 8-21-1, Ginza, Chuo-ku, Tokyo Inside Takenaka Corporation Tokyo Main Store (72) Inventor Taku Miyake 8--21 Ginza, Chuo-ku, Tokyo No. 1 Inside Takenaka Corporation Tokyo Main Store (72) Inventor Ikuo Shimoda 1-3-2 Shiba-Daimon, Minato-ku, Tokyo Inside Oiles Industry Co., Ltd. (72) Inventor Sumio Kawaguchi 1-3-3 Shiba-Daimon, Minato-ku, Tokyo No.2 OILES INDUSTRIES CO., LTD. (72) Yoshitaka Yamamoto, Inventor 1-3-2 Shiba-Daimon, Minato-ku, Tokyo No.2 OIRS INDUSTRIAL CO., LTD. Nobuo Yamaguchi 1-3-2, Shiba-Daimon, Minato-ku, Tokyo No. F-term in Seismic Isolation Engineering Co., Ltd. (reference) 2E002 FA02 FB11 FB23 JA01 JA02 JB01 JB04 JB13 JB14 JB16 MA12

Claims (8)

[Claims] 1. A viscous body wall comprising: a planographic viscous body container containing a viscous body in a seismic isolation layer comprising upper and lower floor structures; and a viscous resistance plate immersed in the viscous body in the container. In a seismic isolation structure including a damper, one of the viscous body container and the viscous resistance plate is fixed to one of upper and lower structures, and the other has flexibility in out-of-plane deformation. A seismic isolation structure using a viscous wall damper, characterized in that laminated rubber, which transmits in-plane deformation as it is, is arranged horizontally in the in-plane direction and attached to another structure. 2. A roller support member is provided on one of a viscous body container and a viscous resistance plate constituting a viscous body wall damper, which is fixed to a structure, and the other is horizontally displaced by a roller portion of the roller support member. The seismic isolation structure using the viscous body wall damper according to claim 1, wherein only the viscous body wall damper is supported. 3. The laminated rubber according to claim 1, wherein the laminated rubber is arranged and mounted horizontally in the in-plane direction between a bracket provided on the structure and a bracket provided on the viscous body wall damper side. A seismic isolation structure using the viscous wall damper described in 1. 4. A laminated rubber is provided between one bracket provided on one of a structural body and a viscous body wall damper and a bracket provided on both sides sandwiching the bracket on the other side. 2. The seismic isolation structure using a viscous body wall damper according to claim 1, wherein the seismic isolation structure is arranged and mounted on the base. 5. At least two or more laminated rubbers are disposed in the in-plane direction, and are attached to brackets provided on the structure and the viscous body wall damper, and the structure is provided on the viscous body wall damper. The seismic isolation structure using a viscous wall damper according to claim 3 or 4, wherein a bracket for boosting is additionally provided at a position where the bracket is boosted. 6. A roller for reducing a resistance in an out-of-plane direction is provided between a bracket for pushing provided on a structure and a bracket provided on a viscous body wall damper. A seismic isolation structure using the viscous body wall damper described in 5. 7. The laminated rubber is characterized in that only one end face of the laminated rubber is connected to the bracket and the other end face is attached to the bracket in an insulated state with the bracket. Item 6. A seismic isolation structure using the viscous body wall damper according to any one of Items 3 to 5. 8. A viscous body wall damper is provided with a guide groove formed in a viscous resistance plate horizontally in an in-plane direction, and a guide penetrating through the guide groove in an out-of-plane direction between walls of the viscous body container. The viscous body wall damper according to claim 1, wherein a pin is provided, and the guide pin is provided with a spacer for keeping a constant gap between the viscous resistance plate and the viscous body container. Seismic isolation structure.