JPH07252886A - Web bending joint structure - Google Patents

Abstract

PURPOSE:To improve workability by butting the end face of a beam steel except for the flange of the beam connection section of a column steel having a flat cross section, and connecting the connecting plates having nearly the same shape as the web shape of the beam steel with bolts along both faces of the webs of the column steel and beam steel. CONSTITUTION:A steel column 1 is formed from a (-)-shaped, L-shaped, T-shaped, or (+)-shaped cross section into a flat cross section. A beam steel 2 made of H-steel is butted to the column steel 1. Connecting plates 3 having large strength and nearly the same shape as the web shape of the thick beam steel 2 are connected with bolts and nuts along both faces astride the long piece of the column steel 1 and the web of the beam steel 2. Buckling preventing members 4 concurrently serving as a bending resistance flange member are fixed except for the connection section of the column steel 1 and beam steel 2 in the longitudinal direction at both side ends of the long side of the column steel 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a web bending joint structure of a column / beam steel frame having a flat cross section.

[0002]

In recent years, H-shaped steel is often used for steel-framed columns and beams, but the structure of the joint between columns and beams is complicated, and various proposals have been proposed, but machining is also possible. Often difficult.

The present invention has been developed in view of the above circumstances, and is a web bending joint structure in which plates are added to both sides of the web and bolted together by using a column steel frame or a beam steel frame having a flat cross section.

[0004]

SUMMARY OF THE INVENTION According to the present invention, except for a flange of a beam joint portion of a column steel frame having a flat cross section, an end face of the beam steel frame is added to both sides of the butt column steel frame and the web of the beam steel frame to form a web of the beam steel frame. This is a web bending joint structure characterized in that connecting plates of substantially equal size are bolted together, and the present invention is that the connecting plate of the portion of the column steel frame to be added to the web is larger than the beam steel web. The web bending joint structure described in the preceding paragraph.

[0005]

【Example】

Example 1 The example of FIG. 1 has the following configuration. In the column steel frame, one side (long side) of the column is 250 to 500 mm Thickness of the column (short side)
Is 9 to 22 mm, and has a flat cross section, which has a −, L, T, or + cross section. Beam steel frame 2 is, for example, 244 ×
It is made of H-shaped steel of 175 × 7 × 11 mm, butts against the column steel frame 1 and straddles between the long side of the column steel frame 1 and the web of the beam steel frame 2 and is approximately equal to the web of the thick beam steel frame 2. The joint plates 3 having high strength are put on both sides and joined by bolts and nuts. In addition, buckling prevention members 4 also serving as bending resistance flange materials, such as channel steel, are fixed to both ends of the long side of the pillar steel frame 1 in the length direction except for the joint portion between the pillar steel frame 1 and the beam steel frame 2. . A filler 5 is interposed between the webs of the joining plate 3 and the beam steel frame 2 if necessary.

Embodiment 2 In the embodiment shown in FIG. 2, a column steel frame 1 is formed by bending thick flat steel into an L shape, and a joint plate 3 has a groove-shaped cross section.
The other structure is the same as that of the above embodiment.

Embodiment 3 In the embodiment shown in FIG. 3, the joining plate is composed of a portion to be attached to the web of the pillar steel frame 1 which is larger than the web of the beam steel frame 1 in order to increase the overlapping area of the joining plate 3 and the pillar steel frame 1. 3 has a lateral T shape, and other configurations are the same as those in the first embodiment.

[0008]

EFFECTS OF THE INVENTION The present invention has the above-described structure. In the steel column and beam joints, the flange portion of the column does not project, so that the joining joint is simplified in processing and the bolt joint is a non-welding method. Can be adopted, and a web bending joint structure can be obtained.

Since the steel frame pillar and the steel frame beam can be manufactured by pressing the plate material or the plate material, the processing labor is drastically reduced.

[Brief description of drawings]

1A is a front view, FIG. 1B is a plan view,
(c) is a horizontal cross-sectional view of the column, and (d) is a vertical cross-sectional view of the beam.

2A is a front view, FIG. 2B is a plan view, and FIG.
(c) is a sectional view.

FIG. 3A is a front view and FIG. 3B is a perspective view of a plate in a third embodiment.

[Explanation of symbols]

1 ... Column steel frame, 2 ... Beam steel frame, 3 ... Joining plate, 4
…… Bending resistance flange and buckling prevention material, 5 …… Filler

Claims (2)

[Claims] 1. A joining plate of substantially the same shape as that of the web of the beam steel frame, except for the flange of the beam joint portion of the column steel frame having a flat cross section, with the end faces of the beam steel frame abutting both sides of the butt column steel frame and the web of the beam steel frame. A web bending joint structure characterized by being bolted. 2. The web bending joint structure according to claim 1, wherein the joining plate of the portion of the column steel frame to be attached to the web is larger than the web of the beam steel frame.