JPH09291594A - Connection structure of circular steel pipe column and h-shaped steel beam - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connection structure which uses a metallic material, simplifies the manufacture and construction, and has high strength without cutting a circular steel pipe column instead of a method by which the circular steel pipe column is cut and an H-shaped steel beam is joined by a reinforcing member arrangement system. SOLUTION: It is a connection structure of a circular steel pipe column 1 and an H-shaped steel beam 5. Upper and lower flanges of the H-shaped steel beam 5 are sandwiched from the right and left by two metal fittings each in a mirror-image manner, four metal fittings in total, formed by a rib which uses a substantially triangular shape formed by a line along circumference of the circular steel pipe column 1 when viewed from above, a straight line along a flange of the H-shaped steel beam 5, and an oblique line which crosses the two lines as a top face and forms a substantially triangular shape vertically from a crossing point of the straight line along the H-shaped steel beam 5 and the oblique line toward a crossing point of the oblique line and the line along circumference to connect the circular steel pipe column 1 with the H-shaped steel beam 5 by welding. A gusset 4 is welded on the circular steel pipe column 1 vertically to join a web of the H-shaped steel beam 5 with the gusset 4 in a part of the web of the H-shaped steel beam 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint between a circular steel pipe column and an H-shaped steel beam in the fields of civil engineering and construction.

[0002]

2. Description of the Related Art FIG.
It is a figure which shows an example of the connection of the conventional circular steel pipe column and H-shaped steel beam.

The portion of the circular steel pipe column 1 to which the H-shaped steel beam 5 is connected is cut, the plate thickness ring 6 is welded to the cut circular steel pipe column 1, and the circular steel pipe column 1 is assembled again by welding. The flange end of the H-shaped steel beam 5 is welded to the outer periphery of 6 to join the circular steel pipe column 1 and the H-shaped steel beam 5. In such a so-called through-ring system, various types of cutting and reinforcing material arranging systems for circular steel pipe columns 1 are adopted.

However, cutting the circular steel pipe column 1 and assembling it again by welding requires a skilled technique, which is a complicated work and it is difficult to secure accuracy.

Also, the strength is inferior by the amount of cutting and welding.

The present invention was devised in order to eliminate the above-mentioned weak points of the cutting reinforcing material arranging method.

[0007]

[Means for Solving the Problems] A joint structure of a circular steel tubular column and an H-shaped steel beam, and a line along the circumference of the circular steel tubular column when viewed from above, and a straight line along a flange of the H-shaped steel beam, The upper surface is a substantially triangular shape formed by diagonal lines intersecting the two lines, and a substantially triangular shape is formed vertically from the intersection of the straight line along the H-shaped steel beam and the diagonal line to the intersection of the diagonal line and the line along the circumference. The upper and lower flanges of the H-shaped steel beam are sandwiched from the left and right by four metal fittings, each of two left and right formed by the ribs, and welded to the circular steel pipe column and H-shaped steel beam by welding. The web portion of the shaped steel beam is characterized in that a gusset is vertically welded to a circular steel pipe column, and the web of the H shaped steel beam is joined to the gusset.
The main purpose is the joint structure of circular steel pipe columns and H-shaped steel beams.

Here, the circular steel pipe column may be filled with concrete.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing a joint structure of a circular steel pipe column and an H-shaped steel beam of the present invention.

The circular steel pipe pillar 1 may be filled with concrete 2.

Four metal pieces 3 of different left and right are welded to the upper and lower parts of the circular steel tube column 1 to which the H-shaped steel beam 5 is to be joined,
Welding is performed so that the upper and lower flanges of the H-shaped steel beam 5 are held.

Further, in the web portion of the H-shaped steel beam 5, a gusset 4 is welded to the circular steel tubular column 1 parallel to the axis of the circular steel tubular column 1 and joined to the web of the H-shaped steel beam 5 by, for example, bolt fastening. ..

FIG. 2 is a top view of the joint structure of the circular steel pipe column and the H-shaped steel beam of the present invention.

FIG. 3A is a view taken along line AA of FIG.
(B) is a BB sectional view of FIG. 3.

[0016]

The effects of the present invention are as follows.

First, manufacturing and construction are easy. On-site production and construction are also possible, and production at the factory is also possible. Also, the amount of steel used can be small.

Both tensile stress and compressive stress are smoothly transmitted to the circular steel pipe column, and shearing force is received by the gusset, so stress concentration is relaxed and high strength can be expected.

[Brief description of drawings]

FIG. 1 is a perspective view showing a joint structure of a circular steel pipe column and an H-shaped steel beam of the present invention.

FIG. 2 is a top view of a joint structure of a circular steel pipe column and an H-shaped steel beam of the present invention.

3 (a) is a view taken along line AA of FIG. 2. FIG. (B) is a BB sectional view of FIG. 3.

FIG. 4 is a view showing an example of a conventional connection between a circular steel tubular column and an H-shaped steel beam.

[Explanation of symbols]

1 ... Circular steel pipe column, 2 ... Concrete, 3 ... Metal fittings,
4 ... Gusset, 5 ... H-shaped steel beam, 6 ... Plate thickness ring

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Yukio Hayashi 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Within Kashima Construction Co., Ltd. (72) Inventor Shigeru Uirita 1-2-7 Moto-Akasaka, Minato-ku, Tokyo No. Kashima Construction Co., Ltd. (72) Inventor Nobuaki Yoshioka 1-3-8 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. Tokyo Branch

Claims (2)

[Claims] 1. A connection structure of a circular steel tubular column and an H-shaped steel beam, wherein a line along the circumference of the circular steel tubular column when viewed from above, a straight line along a flange of the H-shaped steel beam, and the two lines Formed by a rib that forms a substantially triangular shape vertically from the intersection of the straight line along the H-shaped steel beam and the oblique line to the intersection of the oblique line and the line along the circumference, with the substantially triangular surface formed by the intersecting oblique lines as the upper surface. The upper and lower flanges of the H-shaped steel beam are sandwiched from the left and right by two metal fittings, each of which is left / right, and welded to the circular steel column and the H-shaped steel beam. A joint structure of a circular steel pipe column and an H-shaped steel beam, characterized in that a gusset is vertically welded to a web portion of the circular steel pipe column, and the web of the H-shaped steel beam is joined to the gusset. 2. The joint structure of a circular steel pipe column and an H-shaped steel beam according to claim 1, wherein the circular steel pipe column is a circular steel pipe column filled with concrete.