JPH09189074A - Column-beam joining structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow provision of reinforcement without cutting a steel pipe column, manage with a small reinforcing member not protruding largely to the outside, and ensure good handling at fabrication and a high yield. SOLUTION: In a joint part of a circular steel pipe column 1 with a steel beam 2, thin and long flat plates 7 having an arc-shaped edge 7a of the same curvature as the circle of steel pipe column 1 are continued to one another at the periphery of the column 1, and the arc-shaped edges 7a are welded to the periphery of the column 1 so that a reinforcing plate 5 is formed. The flange 2a of the steel beam 2 is welded to the periphery of this plate 5, and the upper and lower parts of the joint are reinforced with the plates 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a column / beam joint structure of a circular steel pipe column and a steel frame beam made of H-shaped steel.

[0002]

2. Description of the Related Art At the joint between a steel pipe column and a steel beam,
When the steel pipe column is a circular steel pipe column and the steel frame beam is an H-shaped steel frame, as shown in FIG. 9, the steel pipe column 1 is cut at the beam flange position of the steel frame beam 2 and the plate thickness ring 3 is attached by welding as a reinforcing material and cut. The steel pipe column 1 is welded up and down through this plate thickness ring 3,
Various steel pipe columns 1 including the through ring system in which the beam flange end of the steel beam 2 is welded to the outer periphery of the plate thickness ring 3
A cutting reinforcement arrangement method is adopted.

On the other hand, as a type of attaching a reinforcing material from the outside without cutting the steel pipe pillar 1, as shown in FIGS. 10 to 13, a forging ring 4 is attached to the outer periphery of the steel pipe pillar 1 from the outside as a reinforcing material. The end of the steel beam 2 is welded to the forged ring 4.

A method of providing various outer diaphragms 6 as shown in FIGS. 14 to 17 is also known. These Figure 14
~ In Fig. 17, α indicates a stress concentration point.

[0005]

The structure shown in FIG. 9 is complicated to manufacture, and the steel pipe column 1 is also cut, which is difficult in terms of strength. On the other hand, the steel pipe columns 1 shown in FIGS. 10 to 13 do not need to be cut, but the forging ring 4 as a reinforcing material becomes large depending on the joint strength, and as shown in FIGS. 14 to 17. It will be close to the outer diaphragm.

As described above, in the case where the reinforcing material is large or the outer diaphragm 6 is used, there is a problem of handling during manufacturing and a problem of interference with the finishing material because the reinforcing material is exposed to the outside.

Further, in the ring system shown in FIGS. 10 and 11, the yield is small in stripping from a steel plate.

The object of the present invention is to eliminate the inconvenience of the above-mentioned conventional example, and to dispose the reinforcing material, the steel pipe column can be left uncut, and a small reinforcing material which does not protrude to the outside is sufficient. The object is to provide a column-beam joint structure with good yield and high yield.

[0009]

According to the present invention, in order to achieve the above-mentioned object, an elongated flat plate having an arc side having the same curvature as a circular shape of a steel pipe column is provided at an outer periphery of the steel pipe column at a joint portion between the circular steel pipe column and the steel frame beam. And connect the arc sides to the outer circumference of the steel pipe column by welding to form a reinforcing plate.The flange of the steel beam is welded to the outer periphery of this reinforcing plate, and the upper and lower parts of the joint are joined by this reinforcing plate. Reinforcement and the flange of the steel beam are to be joined to the outer periphery of the reinforcing plate at a continuous position between the elongated flat plates.

According to the first aspect of the present invention, the reinforcing plate as the reinforcing member is composed of a plurality of divided bodies, and since the single body is formed as an elongated flat plate having arc sides having the same curvature as the circular shape of the steel pipe column, it is small. It is easy to handle, and it is easy to handle at the time of production, and the yield is large when it comes to stripping steel sheets. Also, since it is small, it does not have to protrude significantly.

According to the second aspect of the present invention, in addition to the above-described action, the flange of the steel beam is joined to the reinforcing plate at a continuous position between the elongated flat plates, so that the joining strength between the reinforcing plates is increased.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a side view showing a first embodiment of a column-beam joint structure of the present invention, and FIG. 2 is a plan view of the same,
In the figure, 1 is a circular steel pipe column, and 2 is a steel beam made of an H-shaped steel frame.

At the joint between the circular steel pipe column 1 and the steel beam 2 of H-section steel, a reinforcing plate 5 made of a horizontal plate having the same thickness as the beam flange 2a of the steel beam 2 is prepared. The reinforcing plate 5 is composed of a plurality of (four in the illustrated example) divided bodies, and the single body is an elongated flat plate 7 having an arc side 7a having the same curvature as the circular shape of the steel pipe column 1 as shown in FIGS. Formed.

The elongated flat plate 7 is continuous with the outer circumference of the steel pipe column 1, and the arc side 7a is welded to the outer periphery of the steel pipe column 1,
The beam flange 2a of the steel beam 2 is welded to the outer periphery of the reinforcing plate 5 at the joint between adjacent elongated flat plates 7. The slender flat plate 7 is welded to the steel pipe column 1 by fillet welding as shown in FIG. 6 or butt groove welding as shown in FIG.

Thus, at the joint between the steel tube column 1 and the steel frame beam 2, reinforcement can be obtained by the reinforcing plate 5 at the upper and lower beam flanges 2a of the steel frame beam 2. In addition, the beam flange 2 is attached to the reinforcing plate 5 at the joint between the elongated flat plates 7.
Since a is joined, the strength of the joined portion between the elongated flat plates 7 is also obtained.

Since the reinforcing plate 5 is divided into the plurality of elongated flat plates 7 as described above, the yield rate of the plate removal from the steel plate is large.

FIG. 8 shows a second embodiment, which is an elongated flat plate 7
The outer edge other than the joint with the beam flange 2a was formed into an arc side similar to the arc side 7a which is the inner edge.

[0018]

As described above, the pillar-beam joint structure of the present invention requires only a reinforcing material which is small and does not project to the outer side while the steel tube pillar is cut to dispose the reinforcing material. The handling at this time is good, the yield is good, and the strength of the joint portion of the divided reinforcing material can be secured.

[Brief description of the drawings]

FIG. 1 is a side view showing a first embodiment of a column-beam joint structure of the present invention.

FIG. 2 is a plan view showing a first embodiment of a column-beam joint structure of the present invention.

FIG. 3 is a plan view of an elongated flat plate which is a main part showing the first embodiment of the column-beam joint structure of the present invention.

FIG. 4 is a front view of an elongated flat plate which is a main part showing a first embodiment of a column-beam joint structure of the present invention.

FIG. 5 is a side view of an elongated flat plate which is a main part showing the first embodiment of the column-beam joint structure of the present invention.

FIG. 6 is a front view showing a first example of a joint between a steel pipe column and a beam flange, which is a main part showing the first embodiment of the column-beam joint structure of the present invention.

FIG. 7 is a front view showing a second example of the joint portion between the steel pipe column and the beam flange, which is the main portion showing the first embodiment of the joint structure for columns and beams of the present invention.

FIG. 8 is a side view showing a second embodiment of the column-beam joint structure of the present invention.

FIG. 9 is a partially cutaway side view showing a first example of a conventional example.

FIG. 10 is a side view showing a second example of the conventional example.

FIG. 11 is a plan view showing a second example of the conventional example.

FIG. 12 is a partially cutaway side view showing a third example of the related art.

FIG. 13 is a plan view showing a third example of the conventional example.

FIG. 14 is a plan view showing a first example of a conventional outer diaphragm type.

FIG. 15 is a plan view showing a second example of a conventional outer diaphragm type.

FIG. 16 is a plan view showing a third example of a conventional outer diaphragm type.

FIG. 17 is a plan view showing a fourth example of a conventional outer diaphragm type.

[Explanation of symbols]

 1 ... Steel tube column 2 ... Steel beam 2a ... Beam flange 3 ... Thickness ring 4 ... Forged ring 5 ... Reinforcement plate 6 ... Outer diaphragm 7 ... Elongated flat plate 7a ... Arc side

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tomio Ouchi 2-1-1, Tobita-cho, Chofu-shi, Tokyo Kashima Construction Co., Ltd. Technical Research Institute (72) Inventor Yukio Hayashi 1-2-2 Moto-Akasaka, Minato-ku, Tokyo No. 7 Kashima Construction Co., Ltd. (72) Inventor Yukio Hayami 1-2-2 Moto-Akasaka, Minato-ku, Tokyo No. 7 Kashima Construction Co., Ltd. (72) Nobuaki Yoshioka 1-3-Moton Akasaka, Minato-ku, Tokyo No. 8 Kashima Construction Co., Ltd. Tokyo Branch

Claims (2)

[Claims] 1. At a joint between a circular steel pipe column and a steel beam, elongated flat plates having arc sides having the same curvature as the circular shape of the steel pipe column are mutually continuous on the outer periphery of the steel pipe column, and the arc side is the outer periphery of the steel pipe column. A column-beam joint structure characterized in that a reinforcing plate is formed by welding, a flange of a steel frame beam is welded to the outer periphery of the reinforcing plate, and the upper and lower parts of the joint are reinforced by the reinforcing plate. 2. The column-beam joint structure according to claim 1, wherein the flange of the steel frame beam is joined to the outer periphery of the reinforcing plate at a continuous position between the elongated flat plates.