JPH01312170A - Earthquake-proof wall - Google Patents

Abstract

PURPOSE:To permit a wall to follow displacement in the outside direction by a method in which an inner wall is surrounded by an outer wall, a viscous fluid is packed into the outer wall, and the inner and outer walls are pivotally attached to respective structures so as to be turned in the outside direction with the relative movement of the structures. CONSTITUTION:An inner wall 1 is vertically and rotatably attached to an upstair structure B1 by a horizontal shaft 1a, and an outer wall 2 is vertically and rotatably attached to a down-stair structure B2 by a horizontal shaft 2a by surrounding the inner wall 1. A viscous fluid 3 is packed into the outer wall 2 to form an earthquake-proof wall A.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a vibration control wall that exhibits viscous damping performance in both horizontal and vertical directions.

[Problem to be solved by the invention]

In seismic isolation structures that use laminated rubber etc. as seismic isolation devices,
Energy absorbing devices such as dampers or damping devices are used in conjunction with the need to suppress the increase in the shaking of a building and ensure safety during its displacement. Viscous dampers and damping walls have been proposed, which utilize the viscous shear force generated between the laminar flow of viscous fluid and exhibit damping performance.

However, viscous dampers and other damping devices installed in seismic isolation structures only exhibit a damping effect in two horizontal directions, so they are not necessary for tall, narrow buildings such as tower-shaped buildings to prevent them from falling. It is ineffective as a means for suppressing vertical displacement, and usually requires the addition of a special device for this purpose.

Furthermore, since the damping wall can be deformed in response to horizontal displacement in the ] direction, it has the weakness of being subjected to forced deformation when relative displacement occurs in the out-of-plane direction.

This invention was made based on the actual situation of conventional damping devices, and we would like to propose a new damping wall that exhibits a damping effect in the vertical direction and can also follow relative displacement in the out-of-plane direction. That is.

[Means to solve the problem]

In the present invention, the inner wall of the structure on the upper and lower floors is installed vertically into one structure, and the outer wall surrounding the inner wall and installed vertically into the other structure is arranged to face each other. By separating it from the structure at a distance, the damping wall retains vertical damping performance due to the viscous fluid filled between the inner and outer walls, and the ends of the inner and outer walls that are attached to the structure are moved out of plane. By rotatably mounting the shaft, or by making either one of them slidable horizontally in the out-of-plane direction, the action of external force at the time of horizontal displacement in the out-of-plane direction is avoided.

〔Example〕 The present invention will be explained below with reference to the drawings showing one embodiment.

First, the invention described in claim 1 will be explained.

The damping wall A of this invention is a structure B on the upper and lower floors.

In between, the upper and lower ends are installed so as to be rotatable in the out-of-plane direction, and can follow the relative horizontal movement of both structures B, B2 in the out-of-plane direction.

As shown in Figure 1, the seismic control wall A consists of an inner wall 1 attached vertically to either the second floor structure B1 or the lower floor structure B2, and an outer wall 2 surrounding the inner wall 1 and attached vertically to the other. , and a viscous fluid 3 filled in the outer wall 2, and the inner wall 1 is separated from the structure B2 on the outer wall 2 side, and the outer wall 2 and the structure B1, which is an example of the inner wall, at required distances from each other.

Due to the difference in the width of the inner wall 1 and the outer wall 2 and the interval secured between the tip of each and the opposing structure B2.81, the damping wall A is constructed as an upper and lower story structure B in the in-plane horizontal and vertical directions.
It exhibits viscous damping performance against relative movement between + and Bz.

Further, as shown in the figure, the inner wall 1 and the outer wall 2 are rotatably attached to the attached structures Bl and B2 with respect to the horizontal axes 1a and 2a in the out-of-plane direction, that is, in the in-plane direction, so that when relative movement in the out-of-plane direction also rotates with the amount of displacement, and the vibration control wall A
It is designed to generate a viscous resistance force by moving in one direction, for example, against the inner wall 1 or the outer wall 2.

As a result of the above, the damping wall A has a viscous damping ability against the relative movement of the upper and lower floor structures B, B2 in three directions: two horizontal directions and a vertical direction.

Next, the invention described in the second claim will be explained.

In this invention, a seismic control wall A having the same configuration as the first claimed invention is attached to an upper floor structure Bl or a lower floor structure B2 so as to be slidable in both directions, and is able to resist out-of-plane directional forces. It has a structure that does not resist.

In the damping wall A, at least one of the inner wall 1 and the outer wall 2 is slidable in an out-of-plane direction to the structure B1 on either the upper or lower floor, as shown in FIG.
2. Even when moving relative to each other, it is always installed in a vertical state.

In the illustrated embodiment, the inner wall 1 is slidably attached vertically to the upper floor structure B1, and the outer wall 2 is vertically fixed to the lower floor structure B2.

The inner wall 1 is fixed to the upper floor structure BI, for example, to a sleeve 5 which is slidable along a guide beam 4 installed in the direction out of the plane of the support MA, so that the inner wall 1 can be slid horizontally to the upper floor structure. Supported by B1.

In addition to the embodiment, the inner wall 1 and the outer wall 2 are attached to the upper structure B1 and the lower structure B2 in such a way that the inner wall 1 is fixed to the upper structure B1, and the outer wall 2 is fixed to the lower structure B2. It may be selected arbitrarily, such as allowing it to slide freely.

This damping wall A exerts a viscous damping force only against the relative displacement between the two lower floor structures Bl and BZ in the in-plane horizontal and vertical directions, and damps against the relative displacement in the out-of-plane direction. It has a structure that does not generate force or resistance, and by placing it in a structure perpendicular to two horizontal directions, it exhibits a damping effect in three directions, horizontal and vertical, similar to the invention described in the first claim. can be done.

〔Effect of the invention〕

This invention is as described above, and since the inner wall and the outer wall are separated from the structure on the opposite side at a required distance, the viscous fluid filled between them causes attenuation in the vertical direction as well as the in-plane horizontal direction. The performance can be demonstrated and it can function as a means for suppressing vertical displacement of a structure.

Furthermore, since the damping wall of the first claimed invention has an end attached to the structure that can freely rotate in an out-of-plane direction, and the damping wall of the second claimed invention can freely slide in an out-of-plane direction, an out-of-plane direction force is generated. In particular, in the first claim of the invention, it is possible to freely deform and follow the relative displacement of the lower floor structure, so that the damping effect is exerted even in the horizontal direction out of the plane. That will happen.

[Brief explanation of the drawing]

FIGS. 1-1 and II are a longitudinal cross-sectional view, an elevational view, and FIG. (2) is a longitudinal cross-sectional view and an elevational view, respectively, showing an embodiment of the second claim of the invention. A... Seismic control wall, 1... Inner wall, 2...
...Outer wall, 3...Viscous fluid, la, 2a...
...Horizontal axis, B1...Upper floor structure, B2.
... lower floor structure, 4 ... guide beam, 5
······sleeve.

Claims (2)

[Claims] (1) An inner wall that is vertically attached to one of the structures on the upper and lower floors and separated from the other structure at a distance; It consists of an outer wall separated from one structure at the same distance and a viscous fluid filled in the outer wall. A seismic control wall characterized by being rotatably attached to a shaft. (2) At least one of the inner wall and the outer wall is attached to the structure so that it can slide freely in an out-of-plane direction with respect to relative movement of the upper and lower structures, and always maintains verticality. A vibration control wall according to claim 1.