JP3252777B2 - Structure of the mounting part of the earthquake-resistant wall - Google Patents

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, to absorb energy input to the structure during an earthquake, BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earthquake-resistant wall for reducing plasticization, and particularly to a structure of a mounting portion of the earthquake-resistant wall.

[0002]

FIG. 6 is a front view of a conventional earthquake-resistant wall. In the figure, 1 is a shear panel made of a steel plate, 3 is a stiffening rib installed vertically and horizontally on the surface of the shear panel 1, 5 is an end reinforcing rib installed around the shear panel 1, and 7 is an end reinforcing rib. 5, a joining plate called a picture frame installed on the outer peripheral portion;
Reference numeral 7a denotes a plurality of bolt holes provided in the joining plate 7.

The steel earthquake-resistant wall having the above structure is attached to a main frame composed of columns and beams. The shear panel 1 is absorbed as hysteresis energy by yielding prior to the main frame. Is to reduce the plasticization. Therefore, if the shear panel 3 buckles before yielding of the shear panel 1, energy cannot be sufficiently absorbed. In order to prevent the buckling of the shear panel 1, the stiffening rib 3 is attached to the shear panel 1. The shear panel 1 is installed on both front and back sides, and the shear panel 1 is partitioned by the stiffening ribs 3. At this time, the entire periphery of each section of the shear panel 1 needs to be surrounded by the stiffening ribs.
It is necessary to provide a stiffening rib also at the outermost periphery of the end portion, and the end portion reinforcing rib 5 serves as the stiffening rib at the outermost periphery.

[0004] The end reinforcing ribs 5 are connected to the shear panel 3.
Therefore, the shear panel 1 needs to have a certain height in the thickness direction of the shear panel 1. On the other hand, the joining plate 7 is for installing the earthquake-resistant wall in the opening constituted by the columns and beams, and if it is too thick, it is inconvenient in terms of mounting and workability. Therefore, usually, the structure of the mounting portion of the earthquake-resistant wall is such that the end reinforcing rib 5 and the joining plate 7 are formed as separate members, and the end reinforcing rib 5 is formed of a cylindrical body having a certain height. A flat joining plate 7 is welded to the body.

FIG. 7 is an enlarged view of a portion B encircled in FIG. 6, and FIG. 8 is a sectional view taken along the line AA in FIG. Next, the joint structure of the mounting portion of the earthquake-resistant wall will be described with reference to FIGS. 7 and 8. In the drawing, 10 is an end reinforcing rib 5
Mutually welded portions, 11 indicates a welded portion between the end reinforcing ribs 5 and the joining plate 7, 13 indicates a mutually welded portion between the joining plates 7 (see FIG. 7), and 14 indicates a stiffening rib 3 and the shear panel 1. Welds,
Reference numeral 15 denotes a welded portion between the shear panel 1 and the end reinforcing rib 5 (see FIG. 8).

In each of the above welds, the weld 14 between the stiffening rib 3 and the shear panel 1 may be a simple weld such as fillet welding, but the other welds 10, 11, 13, and
For No. 15, butt welding is indispensable in view of the demand for the strength of the earthquake-resistant wall.

It is not always necessary to join between the joining plates 7 at the four corners of the joining plate 7. For example, as shown in FIG. 9, even a structure in which only the end reinforcing ribs 5 are joined. Good.

[0008]

In the above-described structure of the conventional mounting portion for the earthquake-resistant wall, the end reinforcing rib 5 and the joining plate 7 are formed as separate members as described above, and these are butt-welded. Was joined. However, the end reinforcing ribs 5
There is a problem in that the welded portion 11 between the shearing panel 1 and the joint plate 7 extends over the entire circumference of the shear panel 1, thus increasing the cost.

Further, since the completed earthquake-resistant wall must be arranged in an opening defined by predetermined dimensions surrounded by columns and beams and its four sides must be joined to the columns or beams, extremely high dimensional accuracy can be obtained. However, if welding with a large heat input such as butt welding is used, shrinkage or bending,
Alternatively, there has been a problem that an accuracy defect is likely to occur due to a fall or the like.

The present invention has been made to solve such a problem, and an object of the present invention is to obtain an accurate structure of a mounting portion for an earthquake-resistant wall with a small number of welding steps.

[0011]

Means for Solving the Problems The structure of the mounting portion of the shear wall according to the present invention is provided on the outer peripheral portion of the shear panel constituting the shear wall, intended for connecting the shear wall to the main Frames smell
Te, was also formed by joining the outer peripheral portion of the shear panel to the flange outer surface of the T-shaped cross-section shape steel disposed toward the web outward
A corner portion of the T-section steel.
Cut each end of the web at a 45 degree angle and
Cut the end of the flange from the end of the web to the flange thickness
It is formed by processing and welding each of the processed ends .

In addition, outside the shear panel constituting the earthquake-resistant wall
Installed on the periphery to connect the shear wall to the main frame
Of the T-section steel with the web facing outward
The outer periphery of the shear panel is joined to the outer surface of the flange.
Cut into the web in the T-section steel section.
A cut is made, and the cut is bent to form a corner .

[0013]

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory view of a main part of a first embodiment of the present invention, and corresponds to FIG. 8 showing a prior art. In this embodiment, instead of the end reinforcing rib 5 and the joining plate 7 which are separate members in the prior art, T
In this embodiment, a section steel 13 is used. That is, FIG.
As shown in the figure, the web 13b of the T-section steel 13 is arranged outward, and the outer peripheral portion of the shear panel 1 is joined to the outer surface of the flange 13a of the T-section steel 13.
Therefore, the flange portion 13a and the web 13b of the T-shaped section steel 13 correspond to the end reinforcing rib 5 and the joining plate 7 in the related art, respectively.

In this embodiment having such a structure, since the flange portion 13a and the web 13b are originally connected, it is not necessary to join them separately by welding as in the prior art. Therefore, it can be said that the structure does not require welding labor and cost and has good dimensional accuracy.

At the four corners, when the T-section steel members 13 are joined to each other, as shown in FIG.
b is cut at an angle of 45 degrees, and the end of the flange portion 13a is cut by a distance of about 1 thickness of the flange portion 13a.
Cut only 6 pieces. By doing so, as shown in FIG. 3, welding between the webs 13b of the adjacent T-shaped section steel 13 and the flange portion 13a becomes possible.

As described with reference to FIG. 9 of the related art,
When the joining plates 7 in the prior art are not joined together,
As shown in FIG. 4, a corner may be formed by making a cut in the entire web 13 b and a part of the flange 13 a and bending the cut at 90 degrees. This eliminates the need for welding at each corner, and further reduces welding labor and cost. In addition,
As shown in FIG. 5, a part of the web 13b may be cut out at a fixed interval, and the flange 13a may be bent with an R. In this way, stress concentration hardly occurs at the corners, and an earthquake-resistant wall with excellent performance can be realized.

[0018]

As described above, in the present invention, a structure in which the outer peripheral portion of the shear panel is joined to the outer surface of the flange of the T-section steel in which the web is arranged outward is conventionally required. It is not necessary to weld the end reinforcing ribs and the joining plate. Therefore, the amount of welding and the number of assembly steps can be significantly reduced. In addition, there is no distortion (bending, twisting, or falling) due to the influence of heat or the like at the time of welding and assembling, so that the structure has excellent assembly accuracy.

Further, in the case where a cut is made in the web and the cut is bent to form a corner, the corner can be easily formed simply by making a cut in the T-section steel web. The welding operation can be further reduced. For this reason, the labor and cost of welding can be further reduced, and the structure of the mounting portion of the earthquake-resistant wall with excellent dimensional accuracy can be obtained.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a main part of an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a part of the embodiment of the present invention.

FIG. 3 is an enlarged view showing a part of the embodiment of the present invention.

FIG. 4 is an explanatory diagram of another mode of the embodiment of the present invention.

FIG. 5 is an explanatory diagram of another mode of the embodiment of the present invention.

FIG. 6 is a front view of a conventional earthquake-resistant wall.

FIG. 7 is an enlarged view showing a part of a conventional earthquake-resistant wall.

FIG. 8 is a sectional view taken along the line AA of FIG. 6;

FIG. 9 is an explanatory view of another mode of the conventional earthquake-resistant wall.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shear panel 3 Stiffening rib 13 T-section steel

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-9-144374 (JP, A) JP-A-5-71244 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04H 9/02

Claims (2)

(57) [Claims] 1. A T-shaped cross-section in which a web is arranged outwardly in a structure of a mounting portion of a shear wall provided on an outer peripheral portion of a shear panel constituting a shear wall and connecting the shear wall to a main frame. It is constructed by joining the outer periphery of a shear panel to the outer surface of a flange of a section steel.
And each end of the web which is a corner in the T-section steel section
At an angle of 45 degrees and cut the end of the flange
Apply a process to cut off the flange plate thickness from the web end,
The structure of the mounting portion of the earthquake-resistant wall, wherein each of the processed ends is welded . 2. An outer peripheral portion of a shear panel constituting a shear wall
Installed in the main building to connect the
T-section steel flange with the web facing outward in the attachment structure
The outer surface of the shear panel is joined to the outer surface.
Then , a cut is made in the web of the T-section steel,
The structure of the mounting part of the earthquake-resistant wall, wherein the notch is bent to form a corner .