JPH0197765A - Earthquake-control, wall - Google Patents

Abstract

PURPOSE: To secure predetermined gaps by filling a viscous material between an interior wall hanging from an upper story and an exterior wall rising from a lower story parallel to the interior wall, and passing a plurality of gap adjusting bolts between the interior and exterior walls so that gaps can be adjusted. CONSTITUTION: An interior wall 1 and an exterior wall 2 are formed of steel plates or the like and flanges 1a, 2a are installed on the skeletons B of upper and lower stories while other ends are separated from the skeletons B with gaps therebetween. The exterior wall 2 is disposed to surround the interior wall 1, with a viscous material 3 packed therebetween to take up seismic forces when the interior wall 1 is moved inside the exterior wall 2 because of interlayer displacement in an earthquake etc. Further, a sealant 9 of an elastic body is bonded in order to prevent the outflow of the viscous material 3 and gap adjusting bolts 4 are passed through the interior wall 1 and between the interior wall 1 and the exterior wall 2 to adjust the gaps in which the viscous material 3 is filled. Therefore, the resistance of the viscous material 3 can be adjusted freely.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a vibration control wall having viscous damping performance.

[Problem that the invention seeks to solve]

Conventionally, in order to improve the seismic performance of structures, various types of seismic walls have been developed, such as seismic 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 control walls. Techniques have been developed, but none with sufficient damping capacity have been developed to date.

Therefore, based on these circumstances, the applicant
No. 068 proposes a seismic wall that exhibits damping performance.

This seismic wall is constructed by filling a viscous material between the inner wall that hangs down from the upper floor's frame and the outer wall that rises from the lower floor's frame. It is necessary to maintain a constant gap.

This invention was made in response to such a need, and attempts to secure a certain gap by arranging a plurality of bolts for adjusting the gap through the inner wall and the outer wall.

[Means for solving problems]

The viscous resistance force (damping force) of a seismic control wall filled with viscous material is determined by the viscosity coefficient of the material, the filling interval, etc. Therefore, in order to control the resistance force, it is necessary to keep the filling interval, that is, the gap between the inner and outer walls, at a constant level. An important issue is ensuring the appropriate size.

Therefore, in the present invention, the shear wall of JP-A No. 61-87068,
In other words, gap adjustment bolts are placed through both walls of the damping wall filled with viscous material between the inner and outer walls, both of which have high rigidity, and the viscous material is filled by adjusting the threaded length of the bolt into the nut. This makes it possible to maintain the gap at a predetermined size and adjust the resistance force caused by the viscous material.

Bolt holes for passing clearance adjustment bolts are drilled in the inner and outer walls at required intervals in the horizontal and vertical directions, and the clearance adjustment bolts are inserted into each of these bolt holes and screwed onto nuts. By adjusting the length, the gap between the inner and outer walls is maintained at a predetermined size.

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

The vibration control wall A of this invention is connected to the upper floor frame B as shown in Fig. 1.
A viscous material (including a viscoelastic material) 3 is filled between the inner wall 1 hanging down from the lower floor and the outer wall 2 rising from the frame B of the lower floor, and the gap dy between the inner wall 1 and the outer wall 2 is filled with the viscous material 3. is secured by a gap adjustment bolt 4.

Both the inner wall 1 and the outer wall 2 are made of highly rigid steel plates, etc.
Upper floor by bolting each flange la, 2a, etc.
It is installed on the lower floor skeletons B, , B, and is separated from the lower floor skeleton B and the upper floor skeleton B, respectively, with a gap. Then, one wall is arranged so as to surround the other wall, as shown in FIG.

Ribs 5 are attached to the two outer walls at required intervals as necessary, and reinforcing members 6 and upper reinforcing members 7 are attached to both ends and the upper end, respectively.

A viscous material 3 is filled between the inner wall 1 and the outer wall 2 so that the damping wall A exhibits viscous damping performance, and as a result, the inner wall 1 moves within the outer wall 2 due to the displacement between the eyebrows during an earthquake. When this occurs, a shearing resistance force is generated in the opposite direction to the inner wall 1 due to the viscous material 3, resulting in a structure that absorbs the seismic force.

In order to eliminate the impact force between the inner wall 1 and the viscous material 3 at this time, cushioning materials 8 such as sponges are arranged at both ends of the outer wall 2 as shown in FIG. In order to prevent this, elastic sealing materials 9 are bonded to the upper end portions of the outer wall 2 at both ends of the inner wall 1, as shown in FIG.

As shown in FIG. 2, a gap adjustment bolt 4 is attached between the outer walls 2 and 2 by penetrating the inner wall 1, and the gap dy that is filled with the viscous material 3 is secured by the gap adjustment bolt 4. The size of this gap dy is adjusted by adjusting the length of screwing into the nut 49.

The gap adjustment bolt 4 also serves to resist the lateral pressure that the outer wall 2 receives when seismic motion or the like acts on the damping wall A.

Bolt holes 1b and 2b into which the gap adjustment bolt 4 is inserted
are opened in the inner wall 1 and the outer wall 2 at required intervals in the horizontal and vertical directions as shown in Fig. In order to avoid collision, the diameter of the shaft portion of the clearance adjustment bolt 4 is larger than that of the clearance adjustment bolt 4. The bolt holes 1b and 2b are located on the inner and outer walls l and 2.
Also serves as an air vent hole when filling the space with viscous material 3.

Between the inner wall 1 and the outer wall 2, a spacer 10 is provided as shown in FIG. Similar to the gap adjustment bolts 4, they are arranged at required intervals.

The spacer lO is slightly thinner than the size of the gap dy,
In the case of a plate, it is glued to the inner wall l as shown in Figure 3-■,
In the case of a spherical shape, it is embedded and attached within the inner wall 1 as shown in ■.

FIG. 4 shows an example of the arrangement of the bolt holes 1b in the inner wall l and the spacers lO.

■ is an example of the arrangement when the lip 11 is provided protruding from the inner wall 1, and ■ is an example of the arrangement when it is not provided.The right side of the center line is for horizontal vibration control, and the left side is an example of drilling bolt holes 1b for horizontal and vertical vibration control. It shows.

〔Effect of the invention〕

The present invention is as described above, and since the gap between the inner and outer walls can be maintained at a predetermined size using the gap adjustment bolt and furthermore the spacer, it is possible to arbitrarily adjust the resistance force of the viscous material. It is possible to effectively demonstrate the damping performance as a seismic control wall.

[Brief explanation of the drawing]

Figure 1 shows a manufacturing example of the present invention, where ■ is an elevation view;
■ is a cross-sectional view along the line X-X, ■ is a cross-sectional view along the Y-Y line, Figure 2 is a vertical cross-sectional view showing the installation of the gap adjustment bolt, and Figure 3 - ■ and ■ are the installation of the spacer. 4-11 is a longitudinal sectional view showing the situation, and FIG. 4-11 is an elevational view showing an example of the arrangement of bolt holes and spacers in the inner wall. A... Seismic control wall, B... skeleton, 1...
...Inner wall, 1a...Flange, 1b...
...Bolt hole, 2...Outer wall, 2a...
Flange, 3... Viscous material, 4... Gap adjustment bolt, 41... Nut, 5...
・Rip, 6...Reinforcement material, 7...Top reinforcement material, 8...Buffer material, 9...Seal material, lO...・Spacer, 11...Rep. Nu 2 Ward (1) (II) Article 431 (n)

Claims (1)

[Claims] (1) There is a viscosity between the highly rigid inner wall that hangs down from the upper floor frame and is separated from the lower floor frame, and the similarly rigid outer wall that rises parallel to this from the lower floor frame and is separated from the upper floor frame. It is a vibration control wall filled with material,
Bolt holes are drilled in the inner and outer walls at required intervals in the horizontal and vertical directions, and gap adjustment bolts that maintain the gap between the inner and outer walls are inserted into the bolt holes in both walls and screwed into nuts. A seismic control wall characterized in that the gap between both walls can be adjusted by adjusting the threading length of a gap adjustment bolt into a nut.