JPS58569A - Earthquake-proof wall - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a seismic wall.

Traditionally, walls attached to columns and beams have been treated as having earthquake-resistant elements, but the eccentricity between the center of gravity and the center of vibration has not been taken into consideration.

However, in reality, it is known that when a structure is subjected to seismic motion, the stress is biased toward the more rigid structure, resulting in three-dimensional torsion.

Therefore, it is necessary to increase the amount of reinforcement, but this results in an uneconomical use of a large amount of material.

The present invention aims to overcome these drawbacks of conventional shear walls! The purpose is to provide a shear wall that can effectively respond to seismic motion using a minimum of materials.

Next, an example will be described.

In the case of framed buildings, (l) is the front pillar, (2) is the back pillar, and the upper part between the nine pillars (1) and (2) is the upper part (B), and the lower part is connected by the lower part. , which constitutes the framework.

<Exit> Movable wall Position the movable wall (5) in the space within the above framework. The movable wall (5) is fixed integrally under the upper beam (3), and the length of the movable wall (5) in the beam direction is The length is formed to be somewhat shorter than the lIO length.

g) The salt 9 between the framework and the moving wall is moved 1! For (5), a steady rest is provided to prevent swinging in a direction perpendicular to (4).

For example, move 1 as a steady rest! (5) Lower beam (
A vertical plate (51) is provided protruding parallel to the lower beam (4).
Guide rails (41) are protruding from the top surface and are positioned parallel to both sides of the vertical plate (51).

The movable wall (5) is always positioned at a suitable spacing (d+) (ds) between the front and rear pillars (1) and (2).

This distance (cll) (dm) is the value of the permissible interlayer displacement for behavior within the elastic limit.

Then, if necessary, fill the gaps (dl) (ds) with flexible filler (6),
) to prevent collisions.

-Next, the operation will be explained.

・When a building incorporating the above framework vibrates due to an earthquake, the upper layer moves with the displacement of the slab (1), and the upper layer (3)
A moving wall (5) that is integrated with the pillar approaches one of the pillars.

<2> In this range, the movement * (5) acts as a resistance to the deformation of pillars (1) and (2), without any influence, and instead acts as a powerless wall.

<3> When the deformation of the framework reaches the value of allowable interlayer displacement for behavior within the elastic limit, the moving wall (the lower end of 0 is the column in front of the moving (2)
The movable wall (5) resiliently rebounds against the sudden deformation of the frame and prevents the entire frame from deforming.

That is, from this behavior, the moving wall (5) acts as an elastic effective wall.

<4> The framework reduces the speed of deformation and continues to deform slowly, but during this time the ground motion begins to move in the opposite direction.

Therefore, the framework temporarily stops its deformation movement and starts deforming in the opposite direction, and the movable wall (5), which is integral with the upper layer (3), also stops moving and starts moving in the opposite direction.

In this way, the above-described action as a powerless wall and an elastic effective wall is repeated again. (5) A strain-stress diagram when the Motoya 1 Jio wall can be used is shown in FIG.

tl is the moving wall 0. A indicates the stress of the adjacent frame, and L$ indicates the average stress of all the frames.

Since the present invention has K as described above, the following effects can be expected.

(A) Since it acts as a powerless wall in the elastic behavior range C and as an elastic effective wall in the elastic-plastic behavior range, it can be used as an element of a frame that is resilient against ground motion.

<Talking> From a design science point of view, it is possible to meet any design science requirements, such as the loss of wall performance.

(g) Since it can be evaluated as an elastic wall, it is possible to reduce the amount of reinforcing steel in the entire structure.

0 It is advantageous to use it in an RO structure with a large eccentricity.

g) Mechanical calculations are easy.

[Brief explanation of drawings]

Figure 1: An explanatory diagram of the wall of the present invention in its resting state, Figure 2: An explanatory diagram of its displacement state during elastic behavior, Figure 3: Cross-sectional view of the steady rest, Figure 4: Stress-strain curve, ( 1) (2): Column, (3) (4): Beam, (Xun: Moving wall patent applicant: Tokyu Construction Co., Ltd.

Claims (1)

[Claims] A movable wall is positioned in a space surrounded by the upper and lower beams and the front and rear columns, and the movable wall blindly covers the upper and lower A seismic wall characterized by a fixed interval between the moving wall and the front and rear columns.