JPH0754425A - Sc earthquake resisting wall - Google Patents

Abstract

PURPOSE:To make a concrete earthquake resisting wall as a compression brace function by placing concrete into a box-shaped steel plate to combine right and left SC columns with the SC wall and, at the same time, mounting a shear connector between the SC columns and SC wall. CONSTITUTION:Right and left SC columns 1 are so constructed that concretes 1b are placed into square steel pipes 1a. Right and left edge ends of steel plate forms 2a are welded with sides of the square steel pipes 1a together as a unit. After that, a plurality of shear connectors 3 are projected to the sides of the square steel pipes 1a. Then, concrete 2b is placed between the steel plate forms 2a to form an SC wall 2, and it is combined with the SC columns 1. According to the constitution, arch action on concrete part of the SC wall 2 is effectively operated, seismic efficiency is greatly promoted and, at the same time, columns for an intermediate story is eliminated, so that execution efficiency can be also promoted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel plate concrete seismic wall (hereinafter referred to as "SC seismic wall") constructed by placing concrete in a box-shaped steel plate assembled in a box shape.
Said).

[0002]

2. Description of the Related Art In general, SC earthquake-resistant walls have good structural characteristics, are easier to construct than RC structures, and can be expected to be rationalized.

By the way, in a building having an RC structure or an SRC structure, a beam is provided for each floor between columns. The angle θ ° that can function as a compression streak (arch action) becomes smaller (Fig. 4 (a)
Although this concrete seismic wall can fully function as a compression streak, it is desirable to have no beams because it causes problems such as complicated structure and troublesome construction. In particular, if a beam is provided in the core portion such as the staircase portion or the toilet portion, the workability is significantly reduced.

However, if there are no beams on each floor,
Although the workability is remarkably improved, the angle θ ° of the arch action is increased (see Fig. 4 (b)), so it is unavoidable that the function of the concrete seismic wall as a compression bracing is significantly deteriorated.

The present invention has been made in order to solve the above-mentioned problems, and aims to improve the workability by eliminating the beams on the intermediate floor provided between the left and right columns, and to improve the workability of the left and right columns. It is an object of the present invention to provide an SC earthquake-resistant wall that can be integrated with a concrete earthquake-resistant wall that is formed between the concrete earthquake-resistant wall and can function as a compression streak.

[0006]

An SC earthquake-resistant wall according to the present invention is a left and right SC column formed by placing concrete in a box-shaped steel plate assembled in a box shape, and a space between the left and right SC columns. And a SC wall integrally formed with the left and right SC pillars by placing concrete in the box-shaped steel plate, and the SC pillars are provided between the SC pillars and the SC walls. And the SC wall are integrated with each other by providing a shear connector.

[0007]

【Example】

Example 1. FIG. 1 shows an embodiment of an SC earthquake-resistant wall according to the present invention. In the figure, reference numeral 1 is a steel pipe concrete column (hereinafter referred to as “SC column”), 2 is between the left and right SC columns 1 and 1, and It is a steel plate concrete wall (hereinafter referred to as "SC wall") that is integrated with SC columns 1 and 1.

The left and right SC columns 1 are constructed by placing concrete 1b in a rectangular steel pipe 1a, and the SC wall 2 is constructed by placing concrete 2b between steel plate forms 2a, 2a.

The left and right edges of the steel plate form 2a are integrally welded to the side surface of the square steel pipe 1a, and the side surface of the square steel pipe 1a has a plurality of protrusions into the concrete 2b of the SC wall 2. Shear connectors 3, ... Are projected so that the left and right SC columns 1,1 and the SC wall 2 are completely integrated.

In particular, since the shear connectors 3, ... Which project into the concrete 2b of the SC wall 2 are provided on the side surface of the rectangular steel pipe 1a, the arch action angle θ ° of the concrete 2b becomes small, and 2b, by extension, the function of the SC wall 2 as a compression streak is significantly enhanced.

The studs 3, ... Are preferably provided on the side surface of the rectangular steel pipe 1a so as to continuously project in the vertical direction of the rectangular steel pipe 1a.
The left and right SC columns 1,1 and the SC wall 2 can be more completely integrated, but they may be provided only at the portion where the beam is installed.

Beams are provided on the uppermost floor and the lowermost floor in the same manner as a normal RC structure.

FIG. 2 shows a plurality of holes on the side surface of the rectangular steel pipe 1a.
4, are provided, and the concrete 1b in the rectangular steel pipe 1a and the concrete 2b in the steel plate form 2a are integrated through the holes 4, ... to form a shear connector.

Further, FIG. 3 shows a plurality of plates 5 projecting from the side surface of the rectangular steel pipe 1a as shear connectors.

[0015]

As described above, the SC according to the present invention
According to the seismic wall, a shear connector that integrates the SC column and the SC wall is provided on the side surface of the rectangular steel pipe of the SC column, so that the concrete of the SC wall can be used even if there is no beam on the floor between the left and right SC columns The arch action of the part works effectively,
It has the effect of significantly increasing the earthquake resistance. Also,
Since there is no pillar on the middle floor, the workability is very good.

[Brief description of drawings]

FIG. 1 (a) is a front view showing an embodiment of an SC earthquake-resistant wall according to the present invention, and FIG. 1 (b) is a sectional view taken along line I-I of FIG. 1 (a).

2 (a) is a partial cross-sectional view showing another embodiment of the SC earthquake-resistant wall according to the present invention, and (b) is a ΙΙ-ΙΙ cross-sectional view in (a).

FIG. 3 (a) is a partial cross-sectional view showing another embodiment of the SC earthquake-resistant wall according to the present invention, and FIG. 3 (b) is a Φ-Φ cross-sectional view in (a).

4 (a) and 4 (b) are explanatory views showing arch actions of the SC earthquake-resistant wall.

[Explanation of symbols] 1 ... SC column (steel tube concrete column), 2 ... SC wall (steel plate concrete wall), 1a ... square steel tube, 1b ... concrete,
2 ... SC wall, 2a ... steel plate form, 2b ... concrete, 3 ... shear connector, 4 ... hole, 5 ... plate.

Front page continuation (72) Inventor Yasushi Aiyama 2-19-1 Tobita-cho, Chofu-shi, Tokyo Kashima Construction Co., Ltd. Technical Research Institute (72) Inventor Nobuyuki Hayashi 2-19-1 Tobita-cho, Chofu-shi, Tokyo Kashima Construction Co., Ltd. Company Technology Research Center

Claims (1)

[Claims] 1. A left and right SC column formed by placing concrete in a box-shaped steel plate assembled in a box shape, and concrete is placed in the box-shaped steel plate between the left and right SC columns. By including the SC wall integrally formed with the left and right SC pillars, and the SC pillar and the SC wall.
An SC earthquake-resistant wall characterized in that a shear connector that integrates the SC column and the SC wall is provided between the wall and the wall.