JP4223152B2 - Seismic isolation structure with viscous wall damper - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a viscous body comprising a lithographic viscous container containing a viscous body in a seismic isolation layer formed of upper and lower floor structures , and a viscous resistance plate immersed in the viscous body in the container. It belongs to the technical field of seismic isolation structure formed by installing a wall damper and, more, about seismic isolation structure using the laminated rubber connecting portions between the isolation layer and the viscous body wall damper.
[0002]
[Prior art]
Conventionally, in a seismic isolation layer formed of upper and lower floor structures such as column beam structures, a lithographic type viscous material container containing a viscous material, and a viscous resistance plate immersed in the viscous material in the container, A seismic isolation structure constructed by installing a viscous body wall damper made of is disclosed in, for example, Japanese Patent Publication No. 5-22026 and Japanese Patent Application Laid-Open No. 10-102820.
[0003]
(1) above Kitoku disclosed in Figure 1 of the fair 5-22026 JP "seismic damping wall", as shown in FIGS. 7 and 8, the viscous resistance plate 7 of the viscous body wall damper 8 ' structure 2 upstairs, and a structure 3 of the viscous material container 6 and the lower floor, the configuration of the attached by rotatably hinge mechanism about a horizontal axis hinge a respectively, by b when the interlayer deformation out-of-plane direction . This seismic isolation structure is capable of viscous wall damper 8 when out-of-plane direction of the layers deformation 'to follow deformation while rotating, not only in the horizontal direction, also described as capable of exhibiting a damping performance in a vertical direction ing.
[0004]
Further, it described in Japanese Patent upper Kitoku No. 10-102820 "Base Isolation Buildings" also are also employed seismic isolation mounted in rotatably hinge mechanism and the viscous body wall damper and the upper and lower stories of the structure Yes.
[0005]
(2) Next, as disclosed in Figure 2 above Kitoku fair 5-22026 discloses "seismic damping wall", as shown in FIGS. 9 and 10, the viscous material container 6 of the lower floor structure The viscous resistance plate 7 is fixed to the body 3 and is slidably connected to the guide beam d fixed to the upper structure 2 in the out-of-plane direction using a sleeve c.
[0006]
Conventionally, the rubber sheet and the steel sheet was bonded alternately "laminated rubber" is typically disposed vertically, widely used as MenShin構Zo支 Uketamawakarada the vertical load of the seismic isolation building horizontal displacement supported freely are (e.g. known the Japanese Patent 10-18444 discloses in many other documents, etc.).
[0007]
[Problems to be solved by the present invention]
a) the case prior art (1), although the viscous body wall damper 8 'can be deform following the upper and lower hinge a, the b in the interlayer deformation out-of-plane direction, is because that, when the out-of-plane direction of deformation 8 As shown by the dotted line, the viscous body 5 may leak from the viscous body container 6 when the viscous body wall damper 8 'is inclined at an angle greater than a certain angle.
[0008]
Further, the fact that the viscous body wall damper 8 ′ is largely inclined as indicated by the dotted line in FIG. 8 means that the viscous body container 6 and the viscous resistance plate 7 cause relative displacement in the vertical direction. Is difficult to manufacture because it must be assembled in a configuration that allows vertical displacement.
[0009]
b) For the prior art (2), since provided to fix the viscous wall damper 8 'in a vertical orientation, the upper Symbol a) problems have been improved. However, in general, the interlayer deformation of the upper and lower floor structures is not limited to the so-called biaxial direction in the in-plane direction and the out-of-plane direction, and often results in “twist deformation” that combines both directions. In that case, there is a possibility of falling into impossible operation deforms guide beam d by seismic force.
[0010]
As noted above, conventional seismic isolation structure, be used as a scaffold to place "Rubber" vertically is well known, used to place the "Rubber" in the horizontal transverse direction I do not listen to that.
[0011]
Accordingly, an object of the present invention is to eliminate the above problems a) and b), to connect the upper and lower floor structures forming the base isolation layer and the viscous wall damper, and to deform in the out-of-plane direction. It has flexibility, a laminated rubber structure for transmitting as a variation of the in-plane direction by using the horizontal (landscape), following the little resistance to deformation of the out-of-plane direction to the viscous body wall damper without transmitting the horizontal forces, only horizontal deformation in the in-plane direction can Rukoto is transmitted to the viscous wall damper, exhibit stable damping performance, having flexibility with respect to so-called torsional deformation, viscous It is to provide a seismic isolation structure with body wall dampers.
[0012]
It is another object of the present invention, without a vertical displacement in the viscous body wall damper, the viscous resistance plate is only capable of horizontal displacement configuration in the in-plane direction causes effectively produce large damping force, the viscous body wall damper Is to provide seismic isolation structure.
[0013]
[Means for Solving the Problems]
As means for solving the above-mentioned problem, the seismic isolation structure using the viscous damper according to the invention of claim 1 is:
Between the upper and lower floors of the structure 2, 3 which form the base isolation layer 4, a viscous material container 6 for lithographic type containing a viscous body 5, the viscous resistance plate which is immersed in the viscous body 5 of the same container 6 In the seismic isolation structure constructed by installing a viscous wall damper 8 consisting of 7
Wherein either one 6 of the viscous material container 6 or viscous resistance plate 7 constituting the viscous wall damper 8 is fixed to the upper and lower floors either of the structures 3, the other 7 a flexibility to deformation in the out-of-plane direction the chromatic and plane direction of the deformation is disposed horizontally laminated rubber 10 configured to transmit directly to the in-plane direction that you are attached to other structures 2,
The laminated rubber 10 is horizontally disposed in an in-plane direction between a bracket 12 provided on the other structure 2 and a bracket 13 provided on the other side 7 of the viscous wall damper 8, and both ends thereof are Attached to each bracket 12, 13 ;
Of the viscous body container 6 and the viscous resistance plate 7 constituting the viscous body wall damper 8, a roller support member 20 is provided on the side 6 fixed to the structure 3, and the other 7 attached by the laminated rubber 10 is The roller portion 21 of the roller support member 20 is supported so that only horizontal displacement is possible .
[0014]
The invention described in claim 2 is the seismic isolation structure by the viscous wall damper according to claim 1,
Laminated rubber 10 includes one bracket 14 provided on either one second structure 2 or viscous wall damper 8, the two brackets 15 and 16 provided on both sides a position sandwiching the bracket 14 to the other 8 and wherein the mounted disposed horizontally in the plane direction during.
[0015]
The invention described in claim 3 is the seismic isolation structure using the viscous wall damper according to claim 1 or 2 ,
With laminated rubber 10 between the bracket 14 and 15, 16 provided on the structure Zotai 2 and viscous wall damper 8 is mounted in a horizontal arrangement to the plane direction, the structure 2 of the front, the viscous body A boosting bracket 17 is additionally provided at a position where the brackets 15 and 16 provided on the wall damper 8 are pushed in the horizontal direction .
[0016]
The invention described in claim 4 is the seismic isolation structure using the viscous wall damper according to claim 3 ,
A roller 22 for reducing resistance in the out-of-plane direction is provided between the boosting bracket 17 provided on the structure 2 and the brackets 15 and 16 provided on the viscous wall damper 8. .
[0017]
The invention described in claim 5 is the seismic isolation structure using the viscous wall damper according to any one of claims 1 to 4 ,
Laminated rubber 10, the only one end face against the brackets 12 and 13 located at both ends is engaged against the bracket, the other end face is characterized in that mounted is brought into contact with the insulated bracket .
[0018]
The invention described in claim 6 is the seismic isolation structure by the viscous wall damper according to claim 1,
A guide groove 23 is provided in the viscous resistance plate 7 of the viscous body wall damper 8 horizontally in the in-plane direction, and the guide pin penetrates the inside of the guide groove 23 between the both side walls of the viscous body container 6 in the out-of-plane direction . 24, and a spacer 25 is provided on the guide pin 24 to keep a constant gap between the viscous resistance plate 7 and the inner wall surface of the viscous container 6.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
1-6 has shown embodiment of the seismic isolation structure by the viscous body wall damper which concerns on the invention described in Claims 1-6 .
[0020]
This seismic isolation structure 1 is immersed in a planographic viscous container 6 in which a viscous body 5 is accommodated in upper and lower structures 2 and 3 that form a seismic isolation layer 4 , and a viscous body 5 in the container 6. This is carried out by installing a viscous body wall damper 8 composed of the viscous resistance plate 7 formed. In the illustrated example, the viscous container 6 is fixed substantially vertically to the structure 3 on the lower floor via an attachment beam 9. On the other hand, the viscous resistance plate 7 is attached to the upper floor structure 2 using a laminated rubber 10 having a configuration in which deformation in the out-of-plane direction is freely transmitted and the in-plane direction deformation is transmitted as it is. Yes.
[0021]
That is, in the embodiment shown in FIGS. 1 and 2, the laminated rubber 10 is disposed 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. horizontally disposed inward, that have attached by joining the ends of each said respective brackets 12 and 13. In FIG. 1, two laminated rubbers 10 are arranged on a horizontal line common to the in-plane direction, and this shows the simplest embodiment of the present invention.
[0022]
In the viscous body wall damper 8 disposed roller support member 20 is fixed to the vertically upward in the viscous material container 6 fixed to the structure 3 of the lower floor, the lower flange of the mounting beam 11 of the viscous resistance plate 7 There that is supported to be only horizontal displacement in the roller portion 21 of the roller support member 20. By the roller support member 20, the vertical displacement between the viscous container 6 and the viscous resistance plate 7 is strictly regulated, and a firm relative positional relationship between them is maintained. The horizontal displacement of plane direction, because the structure 2 upstairs Ru is directly reliably transmitted to the viscous body wall damper 8, exhibits a stable damping function. As for the displacement in the out-of-plane direction, the laminated rubber 10 is bent to follow and deform without resistance (see also FIGS. 4 and 6), so that the viscous wall damper 8 is deformed in the out-of-plane direction of the seismic isolation layer 4. Therefore , it holds the posture of being fixed and standing upright on the structure 3 on the lower floor without causing any trouble . Therefore, there is no problem that the viscous body 5 spills out during interlayer deformation . The same applies to the following embodiments.
[0023]
As shown in FIGS. 1 and 2, the viscous body wall damper 8 is provided with a guide groove 23 that is horizontal in the in-plane direction on the viscous resistance plate 7. the guide groove hole 23 and the guide pin 24 is provided penetrating in the out-of-plane direction, the guide mechanism for only displacement of the horizontal viscous resistance plate 7 plane direction is formed. The guide pin 24 is provided with a spacer 25 that keeps the gap between the viscous resistance plate 7 and the viscous container 6 constant (invention 6 ) . Viscous resistance plate 7, the displacement is restricted in the vertical direction by said guide pin 24 and the guide groove hole 23, together with the roller support member 20, the viscous resistance plate 7 from rotating in a plane To prevent relative displacement in the horizontal direction only. Further, the spacer 25 holds both gaps in the out-of-plane direction formed by the viscous container 6 and the viscous resistance plate 7 constant, and effectively produces a viscous resistance acting as a damping force. Also this point is similarly carried out in the following embodiment (see FIGS. 3 and 5 also.).
[0024]
FIG. 3 shows a space between one bracket 14 provided on the upper structure 2 and two brackets 15 and 16 provided on both sides of the bracket 14 between the mounting beam 11 of the viscous resistance plate 7. 5 shows an embodiment in which the laminated rubber 10 is horizontally disposed in the in-plane direction and both ends thereof are joined to the brackets 15 and 16 (the invention according to claim 2 ). In FIG. 3, two pairs of the two laminated rubbers 10 and 10 are arranged on a horizontal line in the in-plane direction. In the embodiment of FIG. 3, the set of the two laminated rubbers 10, 10 is free to perform a deformation operation that bends as shown by a dotted line in FIG. to follow.
[0025]
In the embodiment of FIG. 5, considering that the laminated rubber 10 is weak in tension, further the structure of the upper Symbol Figure 3 assumption, the structure 2 of the upper floor, attached to the attachment beam 11 of the viscous body wall damper 8 Additional booster brackets 17 are respectively provided at positions where the outer surfaces of the brackets 15 and 16 are boosted (invention according to claim 3 ). As a result, since the additional boost bracket 17 will always transmit the horizontal deformation of the right and left directions in the figure to the bracket 15 and 16 directly, tensile force to the laminated rubber 10 is prevented from acting. Although illustration is omitted, the embodiment shown in FIGS. 1 and 2 can also be implemented by providing the additional booster bracket 17 on the upper structure 2 at the position where the bracket 13 is pushed.
[0026]
According to the embodiment of FIG. 5, almost no tensile force is applied to the laminated rubber 10 and the deformation in the in-plane direction is transmitted only as a compressive force, so that one end face 18 or the other end face 19 of the laminated rubber 10 is a bracket. Insulate to the extent that it does not leave (for example, provide ribs sandwiching both sides of the bracket so that only the out-of-plane direction is constrained on the end surface on the insulating side of the laminated rubber). You can also. Although not shown, the embodiment shown above Symbol FIGS. 1 and 2, and also in the embodiment of FIG. 3, with careful consideration of the effect of the tensile force in the case of particularly arranged a plurality of the laminated rubber 10 ... If the end face of the laminated rubber 10 is determined so as to be in an insulating state, the action of the tensile force can be cut completely in the same manner (the invention according to claim 5 ).
[0027]
Surface between the means for practicing the above embodiments Symbol Figure 5, as shown in FIG. 6, the upper floor of boost bracket 17 of the structure 2 side and the viscous resistance plate 7 side of the bracket 15 and 16 roller 22 ... is good provided to reduce the resistance of the outward (the invention described in claim 4). In Figure 6, the attached roller 22 ... on the side of the bracket 15 and 16, it can be carried out in the same manner be attached to the side of boost bracket 17.
[0028]
[Effects of the present invention]
Seismic Isolation by viscous wall damper according to the invention described in claim 1 to 6 are to tie the upper and lower floors structure and the viscous body wall damper forming the base isolation layer, deformation of the plane direction directly transmitted to since it is arranged horizontally laminated rubber structure plane direction that does not carry a flexibility to deformation out-of-plane direction, the out-of-plane direction and freely deform following the viscous wall damper Without transmitting the horizontal force, only the horizontal deformation in the in-plane direction is transmitted to the viscous wall damper and exhibits a stable damping function . Laminated rubber is effective because it exhibits flexibility even for so-called torsional deformation.
[0029]
Also, without displacing vertically the viscous wall damper, so make a horizontal displacement of the viscous resistance plate only in the in-plane direction, it is possible to make effectively produce large damping force.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of a base isolation structure using a viscous wall damper according to the present invention.
FIG. 2 is a side view of FIG.
FIG. 3 is a front view showing different embodiments of the seismic isolation structure using the viscous wall damper according to the present invention.
4 is an explanatory view showing in plan the deformation operation of the laminated rubber portion of FIG. 3 in the out-of-plane direction.
FIG. 5 is a front view showing still another embodiment of the seismic isolation structure using the viscous wall damper according to the present invention.
6 is an explanatory view showing in plan the deformation operation in the out-of-plane direction of the laminated rubber portion of FIG. 5. FIG.
FIG. 7 is a front view showing a seismic isolation structure using a conventional viscous wall damper.
FIG. 8 is a side view of FIG. 7;
FIG. 9 is a front view showing a seismic isolation structure using a different conventional viscous wall damper.
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 Booster bracket 18, 19 End face of laminated rubber 20 Roller support member 21 Roller part 22 Roller 23 Guide slot 24 Guide pin 25 Spacer

Claims (6)

Between the upper and lower floor structures forming the seismic isolation layer, there is a viscous wall damper consisting of a lithographic type viscous material container containing a viscous material and a viscous resistance plate immersed in the viscous material in the container. In the seismic isolation structure that is installed and configured,
Wherein one of the viscous material container or viscous resistance plate constituting the viscous wall damper is fixed to either one of the structures upper and lower floors and the other of the chromatic and plane direction of flexibility in deformation in the plane direction variants, are arranged horizontally laminated rubber structure to transmit directly to the in-plane direction that you are attached to other structures,
The laminated rubber is horizontally arranged in an in-plane direction between a bracket provided on the other structure and a bracket provided on the other side of the viscous wall damper, and both ends thereof are attached to the brackets. Being
Of the viscous material container and the viscous resistance plate constituting the viscous material wall damper, a roller support member is provided on the side fixed to the structure, and the other attached with the laminated rubber is a roller portion of the roller support member. Seismic Isolation by viscous body wall damper you characterized in that it is supported only possible direction displacement. Rubber is horizontally disposed to the plane direction between the two brackets provided on both sides positions sandwiching the one bracket provided on either one of the structures or viscous wall damper, said bracket to the other between The seismic isolation structure with a viscous wall damper according to claim 1, wherein With laminated rubber between brackets provided in the structure body and the viscous body wall damper is mounted in a horizontal arrangement to the plane direction, the structure of the front, horizontal bracket provided on the viscous body wall damper The seismic isolation structure using the viscous wall damper according to claim 1, wherein a boosting bracket is additionally provided at a position where the rear wall is pushed back. 4. The viscosity according to claim 3 , wherein a roller for reducing resistance in an out-of-plane direction is provided between a boosting bracket provided on the structure and a bracket provided on the viscous wall damper. Seismic isolation structure with body wall damper. Laminated rubber, the only one end face with respect to the bracket positioned at both ends is engaged against the bracket, characterized in that the other end surface is mounted is brought into contact with the insulated bracket, claim 1 The seismic isolation structure by the viscous body wall damper described in any one of -4. Is the in-plane direction horizontal guide groove holes provided in the viscous resistance plate of the viscous body wall damper, the guide pin is provided which penetrates the front Symbol guide groove hole in the out-of-plane direction between the opposite side walls of the viscous material container, wherein the spacer for holding the gap between the inner wall surface of the viscous material container before and Symbol viscous resistance plate to said guide pin to be constant is provided, the seismic isolation by placing the viscous wall damper to claim 1 Construction.

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