JPH0518001A - Column and beam composite construction - Google Patents

Abstract

PURPOSE:To require no welding of beams, to reduce a number of joints, to promote execution efficiency and to form column and beam composite construction having structurally high reliability. CONSTITUTION:Lower flanges 9 of steel framed beams 5 are placed on a horizontal diaphragm 3 of the lower part of a steel framed column 1 and are joined with bolts 10, studs 7 or cotters 8 are arranged on upper flanges 6 and, at the same time, upper end reinforcing bars 13 for a beam are arranged. They are joined with the outside surface in the vicinity of an upper diaphragm 2 in the steel framed column 1, and slub concrete 14 is placed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a column-beam composite structure.

[0002]

2. Description of the Related Art Conventionally, in the connection of a column beam having a steel frame structure, a beam bracket is welded to a horizontal diaphragm provided on the column, and the bracket and the beam central portion are connected with a bolt.

[0003]

In the above-mentioned conventional structure, a great deal of labor and time are required for the construction because of the welding work of the steel beam on site. The present invention has been proposed in view of the above problems of the prior art, the object of which is to eliminate the need for beam welding, the number of joints is small, the workability is improved, and the structure is highly reliable. The point is to provide a column-beam composite structure.

[0004]

In order to achieve the above-mentioned object, in a column-beam composite structure according to the present invention, the lower flange of the steel frame beam is placed on the lower horizontal diaphragm of the steel frame column and bolted together. On the upper flange of the steel frame beam, the upper end bar for the beam is arranged in proximity to the shear force resistance member arranged on the flange, and is joined to the outer surface of the steel column near the upper diaphragm inside the column, and the slab is also used. It is constructed by placing concrete.

[0005]

According to the present invention, as described above, the lower flange of the steel beam is mounted on the outer side of the lower horizontal diaphragm of the steel column and bolted to the lower flange of the steel beam. The studs provided on the flange, the upper end bar for the beam is arranged in proximity to the shear force resistance member such as the cotter, and the outer end of the steel column is also welded to the outside of the upper diaphragm, and the slab concrete is placed on the upper flange. Thereby, the stress of the beam upper end flange is transmitted to the beam upper end bar of the concrete slab.

[0006]

The present invention will be described below with reference to the illustrated embodiments. Reference numeral 1 denotes a square tubular steel frame column having an upper diaphragm 2 and a lower horizontal diaphragm 3 in the column. Reference numeral 4 denotes a joining plate arranged outside the pillar. Reference numeral 5 is a steel beam, and shear resistance members such as a stud 7 and a cotter 8 are provided on the upper flange 6.

Then, the lower flange 9 of the steel beam 5 is placed on the outer side of the lower horizontal diaphragm 3 of the steel column 1 and is joined by the bolts 10, and the web 11 of the steel beam 5 is mounted.
The joining plate 4 of the steel column 1 is joined with the bolt 10. Further, on the upper flange 6 of the steel column 1, a beam upper end bar 13 is arranged close to the stud 7 or the cotter 8, and the end of the beam upper end bar 13 is attached to the steel frame column 1.
After welding w to the outer side surface near the upper diaphragm 2 in, the slab concrete 14 is placed, and the stress of the flange 6 is applied through the concrete slab without joining the upper flange 6 of the steel beam 1 to the steel column 1. It is transmitted to the steel column 1.

FIG. 4 shows another embodiment of the present invention, in which the hook portion provided at the end of the beam upper end bar 13 is locked to the ring bar 15 surrounding the diaphragm 3 in the steel column 1. Is.

[0009]

According to the present invention, as described above, in the steel beam, the lower flange is bolted to the lower horizontal diaphragm of the same column without welding to the steel column, and the stress of the upper flange of the steel beam is applied to the beam. By transmitting to the upper end bar for the beam arranged in the concrete slab,
On-site welding of steel beams is unnecessary, and the number of joints is small,
The construction cost is reduced, the construction period is shortened, and a structurally reliable column-beam composite structure is constructed.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a column-beam composite structure according to the present invention.

FIG. 2 is a view taken along the line AA of FIG.

3 is a view taken along the line BB of FIG.

FIG. 4 is a partial transverse plan view showing another embodiment of the present invention.

[Explanation of symbols]

 1 Steel Column 2 Upper Diaphragm 3 Lower Horizontal Diaphragm 5 Steel Beam 6 Upper Flange 7 Stud 8 Cotter 9 Lower Flange 10 Bolt 14 Slab Concrete

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Keiko Adachi 1-25-1 Nishishinjuku, Shinjuku-ku, Tokyo Within Taisei Construction Co., Ltd. (72) Inventor Katsuzo Ohata 1-25-1 Nishishinjuku, Shinjuku-ku, Tokyo No. Taisei Construction Co., Ltd.

Claims (1)

Claim: What is claimed is: 1. A lower flange of a steel beam is placed on a lower horizontal diaphragm of a steel column and bolted together, and a shearing member disposed on the upper flange of the steel beam is disposed on the upper flange. A beam-column composite structure characterized in that a beam upper end bar is arranged close to the force-resisting member, the beam is joined to an outer surface of the steel column near the upper diaphragm inside the column, and slab concrete is cast. .