JPH07116751B2 - Column-beam joint structure - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a column-beam joint structure in which a joint between a rectangular steel tube column and a steel frame beam is reinforced without cutting the column.

(Problems to be Solved by the Invention) A diaphragm is required at the joint between a square steel pipe and a steel beam for the purpose of stress transmission and for the purpose of reinforcement. Through diaphragm method that joins to the end surface of the pillar cut at the upper and lower flange positions of the beam that penetrates through Roughly, it is roughly divided into an outer diaphragm system that is joined to the outer circumference.

By the way, in the former two cases, the pillars that have been cut to join the diaphragms must be welded after joining, which requires time and effort for construction, and it becomes difficult to secure the accuracy of the pillars. In many cases, there are weaknesses in construction due to the fact that many of them are difficult to process.

The present invention has been made in view of the actual situation of such a conventional structure, and an object of the present invention is to newly propose a structure in which cutting of a column becomes unnecessary and a welding amount is small.

(Means for Solving the Problem) According to the present invention, on the side surface of the column, vertically elongated slits are formed in parallel at the upper and lower flange positions of the steel beam, and a row of slits is formed at the web position. By arranging rib plates for work and web to reinforce the columns, the cutting of the columns becomes unnecessary, and the problems of welding labor and accuracy accompanying the cutting are solved.

The rib rib plate for the flange and the rib plate for the web are obliquely crossed to the side surface of the pillar between adjacent slits on two adjacent side surfaces of the pillar,
It is arranged at each corner and center of the pillar, and welded to the pillar at the slit position to be integrated.

Each of the upper and lower flanges of the steel beam is welded to two rib plates arranged in parallel with the welding position of the flange rib plate, and the web is welded at the web flange plate position.

(Example) The present invention will be described below with reference to the drawings illustrating an example.

The present invention is a prismatic steel pipe column 2 having slits 2a and 2b formed at the upper and lower flange positions and the web position of the steel beam 1 on the side surface as shown in FIG.
The rib plate 3 for the flange for reinforcement inside
The web rib plate 4 is arranged and the steel beam 1 is joined. This steel beam 1 is located at the end between the columns 2 on which it is erected and is divided in advance for convenience.
A bracket, which is part of the steel beam 1 and is joined to, is included.

As shown in the drawing, slits 2a are opened in parallel at two positions at each flange position of the steel beam 1, and the rib plate 3 for the flange is inserted into the pillar 2 through the slits 2a.
Between the adjacent slits 2a, 2a on the two adjacent side faces, the side faces of the pillar 2 are obliquely crossed.

As shown in FIG. 2, the width of the flange rib plate 3 is set so that the end face does not protrude from the surface of the column 2.

Further, the slits 2b are vertically formed in a row at the web position of the steel beam 1 as shown in the figure, and the rib plate 4 for the web is also inserted into the column 2 from the slit 2b like the flange rib plate 3 so that the adjacent two Adjacent slits on the sides
It is laid across the side of the pillar 2 obliquely between 2b and 2b.

One end of the web rib plates 4, 4 adjacent to each other is the second
As shown in the figure, they are collectively arranged in one slit 2b, and the width of the rib plate 4 for the web is set to such a size that the end face does not project from the surface of the column 2 as shown in the figure.

The flange rib plate 3 and the web rib plate 4 are welded to the side surfaces of the column 2 at the slits 2a, 2a positions and the slits 2b, 2b positions on both end surfaces, respectively, as shown in the figure, and are integrated with this.

The upper and lower flanges of the steel beam 1 straddle two flange rib plates 3 and 3 on one side of the pillar 2 and are welded to the flange rib plates 3 and 3 and the side surface of the pillar 2 so that the web is of the pillar 2. The steel beam 1 is joined to the column 2 by being welded to the side faces and the rib plates 4 and 4 for the web gathering on the side faces.

When the orthogonal steel frame beams 1, 1 are different as in the embodiment shown in FIG. 1, the flange rib plate 3 is given a length such that the upper and lower flanges are within the range.

Further, when the pillar 2 is a side pillar or a corner pillar, the joint portion is formed by applying the general portion shown in the embodiment.

(Effects of the Invention) The present invention is as described above, and the rib plate for the flange and the rib plate for the web are arranged between the flanges on the side surface of the column and the slits provided at the web position, and the rib plates are welded to the column to form the steel beam. Since the welding is performed between the side surface of the column and this rib plate, the transmission of force is reliable, and since it is not necessary to cut the column, the problems of welding work and accuracy that accompany it are solved, and at the same time the construction is performed. It will be greatly facilitated.

[Brief description of drawings]

1 and 2 are a perspective view and a plan view, respectively, showing an embodiment of the present invention. 1 ... Steel beam (bracket), 2 ... Column, 2a, 2b ... Slit, 3 ... Flange plate for flange, 4 ... Rib plate for web.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akio Tomita 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Inside Kashima Construction Co., Ltd. (72) Inventor Kansuke Honma 1-2-2 Moto-Akasaka, Minato-ku, Tokyo No. 7 Kashima Construction Co., Ltd.

Claims (1)

[Claims] 1. A joint structure between a column of a rectangular steel pipe and a steel beam, which are arranged side by side at upper and lower flange positions of the steel beam and have a row of longitudinal slits formed at web positions, respectively.
A rib plate for a flange and a rib plate for a web are installed so as to be obliquely crossed on the side surface of a column between slits at adjacent flange positions and web positions on two adjacent side faces. While welding to the column at the slit position, each flange of the steel beam is welded to the welding position of the flange rib plate, straddling the parallel rib plate for the flange, and the web of the steel beam is welded to the welding position of the web rib plate. A pillar / beam joint structure made up of.