JPH0338385B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a shear wall having viscous damping performance and restoring force.

[Problem that the invention seeks to solve]

Conventionally, various methods have been used to improve the seismic performance of structures, such as shear walls with high rigidity in the elastic region and the ability to absorb hysteretic energy through plasticization, vibration damping devices with only viscous damping ability, and so-called seismic walls. have been proposed, but no one has developed one that has both sufficient damping ability and restoring performance.

This invention was made based on these circumstances, and it has been proposed in JP-A No. 61-87068 that the shear wall exhibiting the damping performance has the resistance function of a conventional shear wall, that is, it has both horizontal rigidity and horizontal bearing capacity. It is intended to combine the performance of

[Means for solving problems]

In the present invention, the shear wall in JP-A No. 61-87068,
In other words, a shear wall with resilience performance is created by horizontally attaching an elastic body to a shear wall that has no static rigidity and exhibits only damping performance, with a viscous material filled between a rising wall and a hanging wall, both of which have high rigidity. do.

The elastic body is a material such as rubber that has elastic, elasto-plastic, or viscoelastic properties, and is attached to either the upper or lower end between the upright wall and the hanging wall that make up the earthquake-resistant wall, and allows both walls to move relative to each other. condition, giving the shear wall its own restoring force.

Furthermore, a clearance is provided at both ends of the rising wall and the hanging wall to limit their range of motion, and the size of this clearance is set to a design value to ensure that both walls can come into smooth contact with each other and that the wall is strong enough to withstand the contact force. By providing sufficient strength to both ends of both walls, the two walls come into contact when the relative horizontal displacement exceeds the design value, forming a highly rigid and resilient shear wall that operates as a unit.

〔Example〕

The present invention will be explained below based on the drawings showing one embodiment.

The shear wall A of the present invention has a viscous material (including a viscoelastic material) 3 between a rising wall 1 rising from a frame B on the lower floor and a hanging wall 2 hanging down from the frame B on the upper floor.
The elastic body 4 is further attached.

First, the first invention will be explained with reference to FIGS. 1 and 2.

In this invention, as shown in the drawings, an elastic body 4 is horizontally attached between a rising wall 1 and a hanging wall 2 at either the upper or lower ends, and the two are movably joined.

Both the rising wall 1 and the hanging wall 2 are made of steel plates or the like having high rigidity, and are separated from the upper floor frame B and the lower floor frame B with a gap, respectively. For example, one is arranged so as to surround the other. A viscous material 3 is filled between the walls 1 and 2, which absorbs horizontal force during an earthquake and causes the shear wall A to exhibit viscous damping performance.

As shown in FIG. 2, an elastic body 4 is attached between the rising wall 1 and the hanging wall 2 at their upper or lower ends, and the two are joined together. In the illustrated example, the elastic body 4 is attached to the rising wall 1 and the hanging wall 2 via splints 5, 5, respectively, but it may also be directly bonded to both walls 1, 2.

Next, the second invention will be explained with reference to FIGS. 3 and 4.

This invention provides a clearance c between opposing surfaces of both ends of the rising wall 1 and the hanging wall 2 in the first invention;
In other words, a horizontal movable distance is provided for both walls 1 and 2, and this is set as a target value, and both walls 1 and 2 are set at both ends.
By providing a strength sufficient to withstand the contact force of both walls 1 and 2, the shear wall A is made resilient so that both walls 1 and 2 operate as one in a range that exceeds the relative movable distance of both walls 1 and 2. It provides plastic restoring force. Incidentally, a cushioning material 6 may be adhered to at least one of the opposing surfaces of both ends to smooth the contact between the walls 1 and 2 as shown in the figure.

In this invention, as shown in FIG. 3, one of the rising wall 1 and the hanging wall 2 is arranged so as to surround the other, and a clearance c that sets a movable distance between the opposing surfaces of both ends of the walls 1 and 2 is provided. is ensured.
The cushioning material 6 is vertically adhered to one of the opposing surfaces with a clearance c in between, as shown in FIG.

Figure 4 shows an example of how the end of the shear wall A fits.

As shown in FIG. 5, the shear wall A of this invention has a viscous damping force due to the viscous material 3, which is represented by Kr, within the range of the relative movable distance l, which is the distance of the clearance c between the upright wall 1 and the hanging wall 2. and elastic or viscoelastic restoring force due to the elastic body 4, and in a range beyond this, high horizontal rigidity and high horizontal proof stress are exhibited by the integrated rising wall 1 and hanging wall 2, which are indicated by Ks.

Next, the third invention will be briefly explained with reference to FIG.

In the first or second invention, a sixth wall is provided on the opposing sides of the rising wall 1 and the hanging wall 2.
As shown in the figure, guides 7 that fit into each other are horizontally protruded so that both walls 1 and 2 can slide relative to each other only in the horizontal direction.
This is to reduce the influence of the rotational moment due to the horizontal resistance force of the shear wall A acting on the attached end of the seismic wall A.

Figure 6 shows the whole of shear wall A.
It shows the details of the top and bottom edges.

〔Effect of the invention〕

As described above, this invention adds an elastic body that exhibits restoring performance to a seismic wall having viscous damping ability by means of a viscous material filled between a rising wall and a hanging wall, so that the following effects can be obtained.

The deformation capacity of the shear wall is increased and it also has a well-defined elastic stiffness, making it possible to adjust the stiffness of the building.

Even in the event of an excessive earthquake input, the shear wall always returns to its original position.

More particularly, in the second invention, when the deformation exceeds a certain level, the rising wall and the hanging wall work together to resist, and this effectively functions as a stopper, a hysteresis damper, and a fail-safe mechanism.

[Brief explanation of the drawing]

Figures 1 and 2 show the first invention,
1-, are a front view and a sectional view, respectively, and FIG. 2 is a partially enlarged view of FIG. 1-. Figures 3 and 4 show the second invention.
Figure - is a cross-sectional view, Figure 4 is a partially enlarged view, Figure 4 is a detailed view of the end, Figure 5 is a conceptual diagram showing the restoring force characteristics of the shear wall according to the second invention. Figure 6 shows the third invention, where is a vertical sectional view and is a partially enlarged view thereof. A... Earthquake-resistant wall, 1... Standing wall, 2... Hanging wall, B... Frame, 3... Viscous material, 4... Elastic body, 5... Splinter plate, 6... Cushioning material, 7... Guide, c... Clearance (set movable distance).

Claims (1)

[Scope of Claims] 1. A rising wall with high rigidity that rises from the skeleton of the lower floor and is separated from the skeleton of the upper floor, and a similarly rigid hanging wall that hangs down from the skeleton of the upper floor parallel to this and is separated from the skeleton of the lower floor. A seismic wall made of a viscous material filled between the wall and the wall, characterized by an elastic body installed horizontally between the rising wall or hanging wall at either the top or bottom, and movably connected to each other. Earthquake-resistant walls. 2. It consists of a highly rigid rising wall that rises from the lower floor frame and is separated from the upper floor frame, and an equally rigid hanging wall that hangs down from the upper floor frame parallel to this and is separated from the lower floor frame. A seismic wall in which either a wall or a hanging wall is placed around the other, and a viscous material is filled between the two walls, and a rising wall or a hanging wall at either the upper or lower end.
An elastic body is installed horizontally between the hanging walls and connected to each other in a movable state, and a clearance is provided to limit the movable range between the opposing surfaces of the rising wall and hanging wall at both ends, and the A seismic wall characterized by having enough strength to withstand contact force. 3. There is a viscosity between a highly rigid rising wall that rises from the lower floor frame and is separated from the upper floor frame and a similarly rigid hanging wall that hangs down from the upper floor frame parallel to this and is separated from the lower floor frame. It is a seismic wall filled with material, and an elastic body is installed horizontally between the rising wall and hanging wall at either the upper or lower ends, and they are movably connected to each other.
A quake-resistant wall characterized in that a rising wall and a hanging wall are horizontally slidable with respect to each other, and guides that fit into each other are horizontally protruded from opposing sides of both walls.