JP2836431B2 - Steel pipe concrete pillar and beam connection structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure between steel pipe concrete columns and beams.

[0002]

2. Description of the Related Art Steel pipe concrete columns are expected to have high yield strength and high rigidity and are also excellent in deformability. Therefore, they are attracting attention as future structural members. However, regarding the joints between steel pipe concrete columns and beams,
Through-diaphragm, inner-diaphragm, and outer-diaphragm types were used.

[0003]

However, the through-diaphragm and the inner-diaphragm have poor filling properties of concrete, while the outer-diaphragm type having no projection on the inside of the column has a drawback of causing interference with the finishing material. In the inner diaphragm type, a hole for filling concrete is drilled, but as shown in Fig. 4, it is impossible to drill a large hole to secure the strength, and there is a concern about the concrete filling property at the bottom of the diaphragm.・ Many studies are required for the filling method.

[0004] In view of the above, in the present invention, in order to improve the concrete filling property of the inner diaphragm type, the hole is enlarged and reinforced.

[0005]

[MEANS FOR SOLVING THE PROBLEMS] The flange of the beam of the steel pipe column
The concrete to be welded inside the steel pipe column
Weld a diaphragm with a hole for filling
Inside the hole of the afram, in the axial direction of the beam to be welded
Weld the vertical ribs so that
Characterized by welding beams to columns and filling with concrete
This is the connection structure.

[0006]

FIG. 1 shows an example of an embodiment.

[0007] Attempting to weld the flange of a beam of a square steel tubular column
A circular hole for concrete filling inside
Welded set the diaphragm aperture of the diaphragm
The beam to be welded has a cross shape in the axial direction.
Weld longitudinal ribs, weld beams to square steel tubular columns and concrete
This is a structure for filling.

There are various types of holes for filling concrete, in addition to the circular shape, and FIGS. 2 (a), 2 (b), and 2 (c).
An example is shown below.

In the examples of FIGS. 1 and 2, the diaphragm 3 and the vertical rib 2 are welded at a single point at a portion C, but FIG.
In (b), the vertical rib 2 is placed on the diaphragm 3 and D
This is an example in which wire welding is performed at a portion. (A) is an example in which only a part of the end of the vertical rib 2 is placed on the diaphragm 3, and (b) is an example in which the entire vertical rib 2 is placed on the diaphragm 3 and a hole for filling concrete is cut out. (C) is BB of (a)
It is sectional drawing.

The vertical rib 2 may be located below the diaphragm 3 in some cases.

Although the figures all show examples of rectangular steel pipe columns, the present invention can be applied to circular steel pipe columns.

[0012]

The effect of the present invention is that, since the longitudinal ribs 2 are reinforced, the hole for filling the concrete becomes large and the filling property of the concrete is good. In addition, since it is reinforced by the vertical ribs 2, sufficient strength can be secured.

[Brief description of the drawings]

FIG. 1A is an example of a top view of the present invention. FIG. 2B is a sectional view taken along line AA of FIG.

FIGS. 2A, 2B, and 2C are other examples of the diaphragm 3. FIGS.

FIGS. 3A and 3B are examples in which a vertical rib 2 and a diaphragm 3 are wire-welded. FIG. 3C is a sectional view taken along line BB of FIG.

FIG. 4 is a view showing a conventional inner diaphragm structure.

[Explanation of symbols]

1 ... steel pipe column, 2 ... vertical rib, 3 ... diaphragm, 4 ... beam, 5 ... concrete

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Jun Tagami 2-9-1, Tobita-Shi, Chofu-shi, Tokyo Kashima Construction Co., Ltd. (72) Inventor Fumitoshi Sakuramoto 2--19, Tobita-Shi, Chofu-shi, Tokyo 1 Kashima Construction Co., Ltd. Technical Research Institute (72) Inventor Akio Tomita 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Seiichi Muramatsu 1-chome Moto-Akasaka, Minato-ku, Tokyo 2-7 Kashima Construction Co., Ltd. (72) Inventor Toshiaki Tauchi 2-9-1-1, Tobita-Shi, Chofu-shi, Tokyo Kashima Construction Co., Ltd. Technical Research Institute (58) Field surveyed (Int.Cl. ⁶ , DB name) ) E04B 1/30

Claims (1)

(57) [Claims] 1. An attempt is made to weld a flange of a beam of a steel pipe column.
A diaphragm having a hole for filling concrete is welded to the inside of the steel pipe column at a location where the hole is filled .
Inside, cross-shaped according to the axial direction of the beam to be welded
Longitudinal ribs welded, Joint structure of the steel pipe concrete column and beam, characterized in that welding the beam to the steel pipe column made by filling a <br/> concrete to be.