JPH06288003A - Joint structure of square steel pipe column and beam - Google Patents

Abstract

PURPOSE:To rationally and securely transform a load, by welding plate members at the upper and lower parts of a steel pipe column and welding a reinforcing rib between the plate members and connecting a beam at a bracket on which a vertical rib is welded at the steel pipe column. CONSTITUTION:Trapezoidal plate members 2 are welded at the upper and lower parts of the welding part of the upper and lower flanges of a beam 5 of a square steel pipe column 1, with a distance from each plate. Next a reinforcing rib 3 is welded between two trapezoidal plates members 2 along the edge of trapezoidal plates and the corners of the square steel pipe column 1. Next, the beam 5 is connected to a bracket where a vertical rib 4 is welded at the position fitting the web of the beam 5 of the square steel pipe column 1.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art For connecting a rectangular steel pipe column 1 and a beam 5, as a diaphragm type, a through diaphragm and an inner diaphragm type installed inside the steel pipe and an outer diaphragm type installed outside the steel pipe are used. However, the outer diaphragm type causes interference with the finishing material, and in the case of the through diaphragm and the inner diaphragm, when the size of the beam 5 on the same floor attached to one pillar is different, the diaphragm welding process is performed. May not be possible, and when applied to a square steel tube concrete column 1, the concrete filling property is poor.

[0003]

The joint between the rectangular steel pipe column 1 and the beam 5 needs to efficiently transmit the load transmitted from the beam 5 to the column. That is, it is necessary to transmit the tensile force and the compressive force of the flange of the beam 5 to the plate of the steel pipe parallel to the beam 5, and the shearing force of the web of the beam 5 to the plate orthogonal to the beam 5. Therefore, according to the present invention, this load can be reasonably and surely transmitted, and it is possible to manufacture regardless of the member size of the beam 5, there are few protrusions to the outside, and moreover, the rectangular steel pipe column 1 having a good concrete filling property is provided. The purpose of the invention is to provide a joint structure of the beam 5.

[0004]

Means for Solving the Problems A trapezoidal plate member 2 is vertically welded to a portion of a square steel pipe column 1 where upper and lower flanges of a beam 5 are joined, and the corners of the square steel pipe column 1 and the trapezoidal plate member 2 are welded. A reinforcing rib 3 is welded between the two trapezoidal plate members 2 along the edge of, and a vertical rib 4 is welded to a portion of the square steel pipe column 1 where the web of the beam 5 is attached, to a bracket. The beam 5 is joined.

[0005]

1 is a top view of the present invention, and FIG. 2 is an example of a perspective view. An embodiment will be described below with reference to the drawings.

This joint is composed of a trapezoidal plate member 2 which is installed in the upper and lower flange portions of the beam 5 and has a width corresponding to the flange width of the beam 5, and the vertical ribs 4 and upper and lower portions which are installed in the web portion of the beam 5. The beam 5 is attached to a bracket constituted by the reinforcing ribs 3 that connect the trapezoidal plate members 2 to each other, and the rectangular steel pipe column 1 and the beam 5 are joined. Also, when using concrete columns, concrete is filled.

[0007]

According to the present invention, the ends of the upper and lower trapezoidal plate members 2 are aligned with the column width and joined by the reinforcing ribs 3 to relieve the stress concentration at the side ends and transmitted from the flange of the beam 5. The tensile force or the compressive force is directly transmitted to the plate of the steel pipe column 1 parallel to the beam 5. This joint has a good filling property of concrete even when it is applied to a steel pipe concrete column because there is no protrusion inside the column. In addition, compared to the conventional outer diaphragm type connection, the outer protrusion is smaller and the interference with the finishing material is smaller. Furthermore, in the conventional outer diaphragm and inner diaphragm type joints, it is necessary to install the diaphragms on all the flange portions of the beam 5 to be mounted. Therefore, when the heights of the plurality of beams 5 attached to one pillar are different, or when the heights of the beams 5 are different, the diaphragms will be installed densely, and the space required for welding processing cannot be taken. Often designed to have the same length and mounting height. However, since this joint can be manufactured according to the size of the beam 5 attached to the column, it is not necessary to make the length and height of the beam 5 the same, and an economical design is possible.

[Brief description of drawings]

FIG. 1 is a top view of the invention.

FIG. 2 is a perspective view of the invention.

[Explanation of symbols]

1 ... Square steel tube column, 2 ... Trapezoidal reinforcing member, 3 ...
Reinforcing ribs, 4 ... vertical ribs, 5 ... beams, 6 ... concrete

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takayuki Inoue 2-1-1, Tobita-cho, Chofu-shi, Tokyo Kashima Construction Co., Ltd. Technical Research Laboratory (72) Inventor Fumitoshi Sakuramoto 2--19-1, Tobita-cho, Chofu-shi, Tokyo 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 1-2-2 Moto-Akasaka, Minato-ku, Tokyo No. 7 Kashima Construction Co., Ltd.

Claims (2)

[Claims] 1. A trapezoidal plate member 2 is vertically welded to a portion of the rectangular steel pipe column 1 where upper and lower flanges of a beam 5 are joined, and along the corners of the rectangular steel pipe column 1 and the edges of the trapezoidal plate member 2. The reinforcing rib 3 is welded between the two trapezoidal plate members 2, and the beam 5 is joined to the bracket in which the vertical rib 4 is welded to the portion of the square steel tube column 1 where the web of the beam 5 is attached. The joint structure of square steel pipe columns and beams characterized by 2. The joint structure for prismatic concrete columns and beams according to claim 1, wherein the concrete prismatic columns are filled with concrete.