JP2009281107A - Earthquake-resisting wall - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an earthquake-resisting wall which is low in setting cost as compared with a conventional one, small in noise and vibration when set, and contributes to simplification of maintenance/inspection work. <P>SOLUTION: The earthquake-resisting wall is constructed by setting a plurality of steel blocks 8 which each consists of a web 6 forming a wall plate, and upper and lower flanges 7 protruding from the web 6 along a thickness direction of the web 6, such that the flanges 7 of the respective blocks are piled up on each other. Herein the earthquake-resisting wall includes a fitting means J arranged on mutually superposed surfaces of the flanges 7, which fitting means J functions to inhibit both the steel blocks 8 from moving with respect to each other in a wall thickness direction and a direction along a wall surface. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  According to the present invention, a plurality of steel blocks each including a web forming a wall plate and upper and lower flanges protruding from the web along the thickness direction of the web are installed in a state where the flanges are stacked. Related to the existing seismic wall.

The earthquake-resistant wall includes a plurality of steel blocks that are easily reduced in size and weight, each including a web that forms a wall plate and upper and lower flanges that project laterally along the outer peripheral edge of the web. Since the blocks are installed so that they overlap each other and the blocks are connected by connecting bolts, there is an advantage that a seismic wall can be provided without particularly using a large transport device.
And since the seismic wall is provided to prevent the deformation of the building frame at the time of the earthquake, the deformation of the seismic wall due to the external force acting from the building frame side, that is, the direction along the overlapping surface of the flanges In order to prevent relative displacement, the blocks are connected using a large number of connecting bolts so as to be able to resist the shearing force acting on the seismic wall.
Specifically, as shown in FIG. 5, conventionally, the steel block 20 is configured as a rectangular block with a side view provided with flanges 7 protruding laterally along the upper and lower outer peripheral edges of the web 6. Each of the steel blocks 20 is arranged such that the flat overlapping surfaces in which the flanges 7 overlap each other are continuously arranged in the horizontal direction over substantially the entire width of the earthquake-resistant wall B, and the flanges 7 are overlapped vertically. The two are connected by a large number of connecting bolts 21 (see, for example, Patent Document 1).

JP-A-11-293950

According to the conventional earthquake-resistant wall described above, the upper and lower blocks are likely to be relatively displaced along the flat overlapping surface over substantially the entire width of the earthquake-resistant wall, so that the shearing force acting on each connecting bolt when an earthquake occurs increases. In order to reduce the shearing force acting on each of the connecting bolts, it is necessary to connect the flanges with a large number of connecting bolts.
Therefore, in addition to the need for a large number of connecting bolts, it is necessary to form a large number of bolt holes corresponding to each connecting bolt in the flange and to tighten a large number of connecting bolts. Has the disadvantage of becoming higher.
In addition, noise and vibration generated when the connecting bolts are tightened at the time of installing the earthquake-resistant wall are disadvantageous in that the maintenance and inspection work for the connecting bolts after the installation of the earthquake-resistant wall is increased by the number of connecting bolts.
The present invention has been made in view of the above circumstances, and can reduce the installation cost of the seismic wall compared to the conventional one, and less noise and vibration when installing the seismic wall, and maintenance after installing the seismic wall The purpose is to be able to simplify the inspection work.

  The first characteristic configuration of the present invention is a state in which a plurality of steel blocks each including a web forming a wall plate and upper and lower flanges protruding from the web along the thickness direction of the wall are stacked. In the seismic wall that is installed and configured, a fitting means that prevents relative movement of both steel blocks in the wall thickness direction and in the direction along the wall surface is provided on the overlapping surface of the flanges. By the way.

According to the first characteristic configuration of the present invention, the overlapping surface of the flanges is provided with fitting means for preventing relative movement of both steel blocks in the wall thickness direction and the direction along the wall surface. Thus, the adjacent steel blocks can be fitted to each other by a simple operation. The fitting means is preferably formed so as to be fitted by bringing both steel blocks relatively close to each other in the overlapping direction in order to simplify the operation.
Moreover, in a state where both steel blocks are fitted together, the fitting means can prevent the relative movement in the wall thickness direction and the direction along the wall surface. Even if it is not used, it can connect in the state which can transmit force between steel blocks, and it becomes possible to construct an earthquake-resistant wall more efficiently and reliably.
And if the connection means such as bolts are not used, the amount of materials used and installation effort can be reduced, so the installation cost of the earthquake resistant wall can be reduced compared to the conventional one, and the noise and vibration during the installation of the earthquake resistant wall can be reduced. The maintenance inspection work after the installation of the shear wall can be simplified.

  According to a second characteristic configuration of the present invention, the fitting means welds a first plate for forming a fitting convex portion to one of the two flanges to be overlapped, and forms a fitting concave portion on the other flange. The second plate is welded and the thickness dimension of both plates is set to the same value.

According to the second characteristic configuration of the present invention, in addition to being able to achieve the above-described operation and effect of the first characteristic configuration of the present invention, the fitting means includes one of the two flanges to be overlapped. The first plate for forming the fitting convex portion is welded to the flange, and the second plate for forming the fitting concave portion is welded to the other flange, and the thickness dimension of both plates is set to the same value. Therefore, the fitting means can be formed with a simple work of simply welding the first plate and the second plate to the corresponding part of the steel block, and the manufacturing cost of the steel block can be reduced. It can come true.
And it becomes possible by the contact | abutting of the end surfaces of both plates to prevent relative movement of both steel blocks to a wall thickness direction and the direction along a wall surface. At that time, by setting the thickness dimension of both plates to the same value, it is possible to transmit force as a cross-sectional stress within the same thickness at the contact part of each other, and it is possible to alleviate the occurrence of stress concentration on only one side. Therefore, a member design that can share stress with less waste is realized.

  Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the parts indicated by the same reference numerals as those in the conventional example indicate the same or corresponding parts.

  FIG. 1 shows an embodiment of a seismic wall according to the present invention. A substantially rectangular frame structure A in front view, with a column 3 as a pair of column structures supporting the beam 2 and a beam 4 as a lower floor structure on which the pair of columns 3 are erected. Is installed on the inner periphery side.

The earthquake-resistant wall B integrally includes a web 6 forming a wall plate and flanges 7 (7a, 7b) protruding laterally along outer peripheral edges at both upper and lower ends of the outer peripheral edge of the web 6. A plurality of steel blocks 8 (8a, 8b) having a U-shaped cross section (see FIG. 2) are stacked vertically and horizontally on the inner peripheral side of the frame-shaped frame A. It is configured by arranging and mounting.
That is, a plurality of rows (three rows in this embodiment) of the block rows 9 that are arranged in a vertical row with the flanges 7 overlapped vertically and the plate surfaces of the web 6 are substantially flush with each other, In the opening surrounded by the frame-like frame A, the webs 6 and the flanges 7 are installed adjacent to each other in the width direction of the earthquake-resistant wall.

  And each block row | line | column 9 is connected with the connection volt | bolt 10 through the flame | frame 19, and the earthquake-resistant wall B integral with the frame-shaped frame A is constructed | assembled.

  The block row 9 includes a plurality of first blocks 8a that are stacked and arranged directly above the beam 4 of the lower floor structure, and a beam of the upper floor structure that is stacked on the top of the first block 8a. 2 and the second block 8b attached to the second block 8b.

As shown in FIG. 2, the first block 8a has a first plate P1 for forming a fitting convex portion on the upper surface of the upper and lower flanges 7 at the center in the longitudinal direction. Is fixed by welding, and on the lower surface of the lower flange 7b, the second plate P2 for forming a fitting recess is fixed to both ends in the longitudinal direction by welding.
As shown in the drawing, the first plate P1 has a plan view shape in which both end portions in the longitudinal direction are convex in the end portion direction of the upper flange 7a (a side view shape of the abacus bead). is there.
In addition, as shown in the drawing, the plan view shape of the second plate P2 is such that each end on the center side in the longitudinal direction of the flange has a concave shape corresponding to the convex shape of the first plate P1. .

  On the other hand, as shown in FIG. 2, the second block 8b has a configuration in which the first plate P1 is removed from the first block 8a.

Therefore, when the blocks 8 are stacked one above the other, the second plate P2 of the upper block 8 is fitted to both end sides of the first plate P1 of the lower block 8, and the wall thickness direction, and It is possible to prevent the relative movement of the blocks 8 in the lateral direction along the wall surface. These plates P1 and P2 constitute the fitting means J.
Incidentally, both the plates P1 and P2 are formed to have the same thickness. With this, the plates P fixed to one block 8 and the opposing flanges in the other block 8 in a state where the blocks 8 are stacked. 7 is less likely to form a gap between the upper and lower blocks 8, and a wider contact area between the upper and lower blocks 8 can be ensured, and a stable stress transmission mechanism can be configured.
By fitting the convex and concave shapes of both plates, it becomes possible to prevent relative movement in the wall thickness direction between both blocks 8 and in the lateral direction along the wall surface, and the bolt connection between both blocks can be prevented. Even if it does not carry out, it becomes possible to achieve the stress transmission between each block 8 reliably.
In addition, since the fitting means J is configured by both plates having the same thickness, when stress is transmitted between both blocks, cross-sectional stress is generated within the same thickness, and stress concentration occurs only on one side. Can be mitigated. Further, the shearing force acting in the lateral direction can be supported by the shearing resistance over the entire surfaces of both plates, and it is possible to ensure a large shearing support force with a simple structure.

The lowermost first block 8 a in each of the block rows 9 has a lower end flange 7 b fixed to the beam 4 with an anchor bolt 14.
In addition, the blocks 8 adjacent to each other in the width direction of the earthquake-resistant wall are formed by connecting the frame 19 fixed to the frame-shaped frame A along the vertical direction and the web 6 of each block 8 with a connecting bolt 10. 19 is fixed integrally therewith.
Further, the blocks 8 adjacent to the pillar 3 in the width direction of the earthquake-resistant wall are integrally formed by connecting the frame 19 fixed in the vertical direction along the pillar 3 and the web 6 of each block 8 with the connecting bolt 10. It is fixed.
The block 8 positioned below the beam 2 is integrally fixed by connecting the frame 19 fixed along the beam 2 and the web 6 of each block 8 with a connecting bolt 10.

According to the earthquake-resistant wall of the present embodiment, the two steel blocks 8 adjacent to each other can be fitted with each other by a simple operation that is relatively close to each other in the overlapping direction. It is possible to connect the steel blocks in a state in which force transmission between the steel blocks can be performed without using almost any of them, and it is possible to construct the earthquake resistant wall more efficiently and reliably.
As a result, the amount of materials used and installation effort can be reduced, the cost for installing the earthquake-resistant wall can be reduced compared to the conventional one, the noise and vibration when installing the earthquake-resistant wall can be reduced, and the earthquake-resistant wall is installed. Subsequent maintenance work can be simplified.

[Another embodiment]
Other embodiments will be described below.

<1> A seismic wall B according to the present invention is a steel block including a web that forms a wall plate by pressing a steel plate, and upper and lower flanges that project laterally along the outer peripheral edge of the web. May be used. Further, the shape is not limited to the steel block whose cross-sectional shape described in the previous embodiment has a “U” shape. For example, the cross-sectional shape is formed in a “H” shape. May be.
<2> The seismic wall B according to the present invention is a steel block including a web 6 forming a wall plate by casting and upper and lower flanges 7 projecting laterally along the outer peripheral edge of the web 6. 8 may be installed.
<3> The earthquake resistant wall B according to the present invention may be installed by combining various shapes of steel blocks.
<4> The seismic wall B according to the present invention is formed by fixing the flange 7 of the steel block 8 constituting the outer peripheral portion thereof by adhering to the floor slab, beam, column, etc. of the existing building with an adhesive. Also good.
<5> The fitting means J is not limited to the plate P having the shape described in the previous embodiment. For example, as shown in FIG.
Further, instead of constructing the plate P by welding to the flange 7, as shown in FIG. 4, the shape of the flange 7 itself is changed, and both steel blocks 8 are overlapped on the overlapping surfaces of the flanges 7. It may be configured to be fitted so as to be relatively close to each other so that relative movement of both steel blocks 8 in the wall thickness direction and the direction along the wall surface can be prevented.
<6> In the previous embodiment, the earthquake-resistant wall constituted by stacking horizontally long steel blocks up and down has been described. For example, horizontally long steel blocks are arranged vertically and stacked horizontally. Is also possible.

  In addition, as mentioned above, although the code | symbol was written in order to make contrast with drawing convenient, this invention is not limited to the structure of an accompanying drawing by this entry. In addition, it goes without saying that the present invention can be carried out in various modes without departing from the gist of the present invention.

Front view showing the seismic wall Perspective view showing a steel block The perspective view which shows the steel block of another embodiment The perspective view which shows the steel block of another embodiment Front view showing a conventional seismic wall

Explanation of symbols

6 Web 7 Flange 8 Steel block J Fitting means P1 1st plate P2 2nd plate

Claims (2)

A seismic wall constructed by installing a plurality of steel blocks, each having a web that forms a wall plate, and upper and lower flanges that protrude from the web along the thickness direction of the web so that the flanges are stacked. Because
A seismic resistant wall in which a fitting means for preventing relative movement of both steel blocks in the wall thickness direction and in the direction along the wall surface is provided on the overlapping surface of the flanges.   The fitting means is constructed by welding a first plate for forming a fitting convex portion to one flange of both flanges to be overlapped and welding a second plate for forming a fitting concave portion to the other flange. The earthquake-resistant wall according to claim 1, wherein the thickness dimension of both plates is set to the same value.

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