JPH1162307A - Steel earthquake-proof wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate manufacturing, transportation, and execution, and also reduce cost by parallelly arranging a plurality of steel materials having H- shaped cross-sections to detachably join the flanges of steel material contiguous to each other, joining webs of the steel materials removably on the upper and lower beams, and further joining flanges of the steel materials at both end parts separably to the left and right posts. SOLUTION: Attachment parts 15a, 15b of a panel 12 is brought in contact with beam side support steel plates 5a, 5b set on the upper beam 2a and lower beam 2b to also be in contact with the flange support steel plate 3a, and bolts are inserted therein by allowing bolt insertion holes 16, 19 to be aligned with each other; then being affixed by nuts detachably. The attachment parts 15a, 15b of the panel 12 are put in contact with the beam side support steel plates 5a, 5b, and the flange 14 is allowed to come in contact with the flange of the panel 12a, subsequently bolts are passed therethrough by putting the bolt insertion holes to be in alignment for making its removable fixation by nuts. Similarly, the panels 12a, 12b are fastened separably, thereby completing the installation of steel earthquake walls 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is installed in an opening composed of left and right columns and upper and lower beams, such as a steel structure, and converts the energy input to the structure during an earthquake into hysteresis energy due to plastic deformation. It relates to steel shear walls to absorb and reduce plasticization of structures.

[0002]

2. Description of the Related Art Installed in an opening (hereinafter referred to as a main bridge) constituted by left and right columns and upper and lower beams of a steel structure or the like, energy input to the structure is absorbed as history energy, and As an earthquake-resistant wall for reducing plasticization, for example, a device described in Japanese Utility Model Laid-Open Publication No. Hei 7-29226 (prior art 1) or C of the Architectural Institute of Japan (August 1995) There is a paper described in the first volume, pages 467 and 468 (prior art 2).

[0003] In the prior art 1, a supported steel plate made of a normal steel plate is fixed around a structural frame space surrounded by columns and beams, and a plurality of ribs are fixed around a very low yield point steel plate fixed by welding. An extremely low yield point steel sheet with a supported steel sheet is formed by fixing a supported steel sheet made of a normal steel sheet, and the side face of the supported steel sheet is brought into contact with the side face of the supporting steel sheet and joined by welding. Further, the prior art 2 has substantially the same configuration as the prior art 1.

[0004]

The earthquake-resistant wall is characterized in that it has a higher strength than braces, studs and the like.
However, in the above-mentioned prior arts 1 and 2, a plurality of ribs are welded and reinforced in order to prevent buckling of the extremely low yield point steel sheet (hereinafter simply referred to as steel sheet). Had become. Moreover, the wall surface was deformed by the welding heat when welding the ribs to the steel plate, and the initial rigidity of the earthquake-resistant wall was reduced. In order to prevent this, intermittent welding or the like is used for welding the ribs, but this causes a reduction in the welding efficiency of the ribs.

[0005] Further, since the steel sheet is installed in a space surrounded by columns and beams, it takes a large area, which makes not only troublesome production, transportation and construction but also repair and reinforcement work. Replacement of steel sheets is very difficult, especially considering recovery after an earthquake.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a steel earthquake-resistant wall which can be easily manufactured, transported and constructed, can reduce costs, and can be easily repaired and replaced. It is what it was.

[0007]

[Means for Solving the Problems]

(1) In the steel earthquake-resistant wall according to the present invention, a plurality of steel materials having an H-shaped cross section are juxtaposed and flanges of adjacent steel materials are detachably joined, and the steel webs are detachably joined to upper and lower beams. At the same time, the steel flanges at both ends are detachably joined to the left and right columns.

(2) Flange supporting steel plates are provided on the flanges of the steel material at both end portions in the above (1), and the flange supporting steel plates are detachably joined to the left and right columns or the column side supporting steel plates provided on the left and right columns. did.

(3) A beam-side supporting steel plate is provided on the upper and lower beams of the above (1) or (2), and a steel web is detachably joined to the beam-side supporting steel plate.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. 1 is a front view showing a state in which a steel earthquake-resistant wall according to Embodiment 1 of the present invention is installed on a main frame of a steel structure, and FIG.
-A sectional view, FIG. 3 is a perspective view of the main frame of FIG. 1, and FIG. 4 is a perspective view of the same steel shear wall.

In the figures, 1a and 1b are steel columns, 2a is an upper steel beam (upper beam), and 2b is a lower steel beam (lower beam).
Thus, the main frame 10 is configured by these components. 3a,
Reference numeral 3b denotes a column-side support steel plate made of a normal steel plate attached to the wall surface of the steel frame columns 1a and 1b on the main frame 10 side by welding or the like at right angles to the wall surface. 4 are provided.

Reference numerals 5a and 5b denote beam-side supporting steel plates made of ordinary steel plates which are attached to the walls of the upper beam 2a and the lower beam 2b on the main frame 10 side by welding or the like at right angles to the wall surfaces. Bolt insertion holes 6 are provided corresponding to the bolt insertion holes provided at both ends of the web of the panel constituting the earthquake-resistant wall. The bolt insertion holes 6 may be provided over substantially the entire length of the beam-side supporting steel plates 5a and 5b.

Reference numeral 11 denotes a plurality of panels 12a, 12b, 12
c, 12d (hereinafter simply referred to as the panel 12) are juxtaposed with steel, and the panel 12 has a cross section H such as a roll H-shaped steel or a built-up H-shaped steel as shown in FIG.
Both ends of the web 13 in the longitudinal direction protrude from both ends of the flange 14 and are attached to the mounting portions 15a, 15b.
Are formed, and a plurality of bolt insertion holes 16 are provided in the mounting portions 15a and 15b. Further, the flange 14 is provided with a plurality of bolt insertion holes 17 at both ends of the web 13 over substantially the entire length in the longitudinal direction. In addition, the web 13 may be formed to have substantially the same length as the flange 14, and an attachment portion made of a normal steel plate and having a plurality of bolt holes may be joined to both ends thereof by welding or the like. 1
8a and 18b are panels 12a and 12 located at both ends.
A flange supporting steel plate made of a normal steel plate attached to the outer flange 14 at a position perpendicular to the side wall of the flange 14 by welding or the like, and a plurality of bolt insertion holes 19 are provided in the longitudinal direction thereof.

Next, the steel earthquake-resistant wall 1 constructed as described above is used.
An example of installation in the case where 1 is installed on a main frame 10 of a steel structure will be described with reference to FIG. First, the mounting portions 15a, 15b of the panel 12a abut against the beam-side supporting steel plates 5a, 5b provided on the upper beam 2a and the lower beam 2b, and the flange supporting steel plate 18a comes into contact with the column-side supporting steel plate 3a provided on the column 1a. The bolts are brought into contact with each other, the bolt insertion holes 6, 16, 4, and 19 are aligned and bolts are inserted, and the nuts are detachably fixed by nuts. Next, the mounting portions 15a and 15b of the panel 12b are brought into contact with the beam-side supporting steel plates 5a and 5b, and
Is brought into contact with the flange 14 of the panel 12a, the bolt insertion holes 6 and 16, and 17 and 17 are aligned, bolts are inserted, and detachably fixed by nuts.

Similarly, the panel 12c is mounted, and finally, the mounting portions 15a, 15b of the panel 12d are connected to the beam side support plate 5.
a, 5b, and the flange 14 is attached to the panel 12
c, which abuts on the flange 14 and the flange supporting steel plate 1
8b is brought into contact with the column-side supporting steel plate 3b to align the bolt insertion holes 6 and 16, 17 and 17 and 4 and 19 with each other. Finish the installation of. In this case, a liner plate may be interposed between the flanges 14 of the adjacent panels 12a to 12d.

In the above description, the individual panels 12a to 12
d was transported to the construction site and assembled into the main frame 10. However, if transportation problems and conditions at the construction site permit, some or all of the panels 12a to 12d are assembled at a factory or the like, and then the construction is completed. It may be sent to the site and installed on the main frame 10.

Second Embodiment FIG. 6 is a front view of a second embodiment of the present invention, and FIG.
It is sectional drawing. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. In the present embodiment, in order to improve the rigidity of the steel earthquake-resistant wall 11 formed by connecting the panels 12a to 12d, a web is provided at a substantially intermediate portion in the longitudinal direction of a part or all of the webs 13 of the panels 12a to 12d. The horizontal rib 20 is attached by welding orthogonal to the horizontal direction 13. The horizontal ribs 20 may be provided on the surface of the web 13 on the same side, or may be provided on the opposite side of the web 13 alternately. In the present embodiment, the horizontal rib 2
Since 0 is attached to each of the panels 12a to 12d by welding, the horizontal rib 20 can be provided at low cost without deforming the web surface or reducing the initial rigidity due to welding heat.

According to the first embodiment configured as described above, the flanges 14 of the panels 12a to 12d
Acts as a rib to reinforce buckling. Further, as shown in the second embodiment, the rigidity (elastic rigidity and plastic rigidity) and deformation of the steel earthquake-resistant wall 1 formed by connecting the panels 12a to 12d are provided by appropriately providing the horizontal ribs 20 on the panels 12a to 12d. Ability and plastic fatigue characteristics can be improved.

According to the present invention as described above, it is easy to manufacture a panel constituting a steel earthquake-resistant wall, and the panel can be separated and carried into a construction site by using an elevator or the like by human power. Transport and construction are extremely easy. In particular, at the time of restoration after an earthquake, only panels required for replacement need to be carried in and out, and the present invention can also be applied to repair and reinforcement work on existing buildings.

In each of the above-described embodiments, the case where the steel earthquake-resistant wall is constituted by four panels made of the H-section steel has been described. However, it is sufficient that the number of panels is two or more. Can be appropriately increased or decreased. In addition, the panels that compose the steel earthquake-resistant wall are detachably attached to the beam-side supporting steel plates provided on the upper and lower beams, and are attached to and detached from the column-side supporting steel plates provided on the columns via the flange supporting steel plates provided on the panel flanges. Although the case of freely attaching is shown, the present invention is not limited to this, and the steel earthquake-resistant wall may be detachably attached to the column and the upper and lower beams by other means.

When the panels constituting the steel earthquake-resistant wall are made of a built-up H-section steel, the web and the flange are made of different steel types, for example, the web has a yield point of 100 N / mm.
Steel types can be selected as appropriate, such as using ^two classes of steel for dampers and SS400 class ordinary steel for the flange.

Further, in each of the above embodiments, the case where the present invention is applied to a steel structure is shown. However, the present invention relates to a steel reinforced concrete structure, a reinforced concrete structure, a column reinforced concrete structure, a beam steel structure and the like. It is needless to say that the present invention can be applied to the mixed structure of the above. Further, in the above description, the case where the seismic energy is mainly absorbed by the steel earthquake-resistant wall composed of a plurality of panels has been described. You can also.

[0023]

The steel earthquake-resistant wall according to the present invention has a plurality of H-section steels juxtaposed, the adjacent steel flanges are detachably joined, and the steel web is detachably attached to the upper and lower beams. And the steel flanges at both ends are detachably joined to the left and right pillars.Flange support steel plates are provided at the steel flanges at both end portions of the steel earthquake-resistant wall. Is detachably joined to the left and right columns or the column-side supporting steel plates provided on the left and right columns, or the beam-side supporting steel plates are provided on the upper and lower beams, and the steel web constituting the steel earthquake-resistant wall is connected to the beam-side supporting steel plates Since it is detachably joined to the, the following effects can be obtained.

It is easy to manufacture the panels constituting the steel earthquake-resistant wall, and the panels can be separated and carried into the construction site using an elevator or the like by human power, so that the transportation and the construction are easy. Cost can be reduced. Furthermore, at the time of restoration after an earthquake, only the panels necessary for replacement need to be carried out, carried in and repaired, so that a steel earthquake-resistant wall excellent in repair and reinforcement can be obtained.

[Brief description of the drawings]

FIG. 1 is a front view of a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a perspective view of a main frame shown in FIG. 1;

FIG. 4 is a perspective view of the steel shear wall of FIG. 1;

FIG. 5 is a perspective view of the panel of FIG. 1;

FIG. 6 is a front view of a second embodiment of the present invention.

FIG. 7 is a sectional view taken along the line BB of FIG. 6;

[Explanation of symbols]

1a, 1b Column 2a Upper beam 2b Lower beam 3a, 3b Column-side supporting steel plate 5a, 5b Beam-side supporting steel plate 11 Steel earthquake-resistant wall 12a, 12b, 12c, 12d Panel (H-section steel material) 13 Web 14 Flange 19a, 19b Flange support steel plate 21 Horizontal rib

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI E04B 2/56 622 E04B 2/56 622H 632 632B 632H

Claims (3)

[Claims] 1. An earthquake-resistant wall installed in an opening composed of left and right columns and upper and lower beams, wherein a plurality of steel members having an H-shaped cross section are juxtaposed and flanges of adjacent steel members are detachably joined. A steel earthquake-resistant wall characterized in that the steel web is detachably joined to upper and lower beams, and steel flanges at both ends are detachably joined to left and right columns. 2. A flange supporting steel plate is provided on a flange of a steel material at both end portions, and the flange supporting steel plate is detachably joined to left and right columns or a column side supporting steel plate provided on the left and right columns. The steel earthquake-resistant wall according to claim 1. 3. The steel earthquake-resistant wall according to claim 1, wherein the upper and lower beams are provided with beam-side supporting steel plates, and a steel web is detachably joined to the beam-side supporting steel plates.