JPH06330563A - Connection structure of steel-pipe column and beam - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] Providing a joint structure of steel tube columns or steel tube concrete columns and H-shaped steel beams with high strength without using electro-slag welding and with little interference with finishing materials. To do. [Structure] A vertical rib reinforcement 6 is welded to the inside of a steel pipe column 1 and four vertical diaphragms 3 of "H" shape are provided between the upper and lower flanges of the H-shaped steel beam 2 and the upper and lower flanges of the H-shaped steel beam. And a web, and the other end of the vertical diaphragm is welded so as to be in contact with the steel pipe column to form a joint between the steel pipe column and the H-shaped steel beam.

Description

Detailed Description of the Invention

[0001]

[Industrial application] The present invention relates to a joint structure between a steel pipe column or a steel pipe concrete column and an H-shaped steel beam.

[0002]

2. Description of the Related Art As shown in FIGS. 4 (a), 4 (b) and 4 (c), conventionally, an outer diaphragm type, an inner diaphragm type,
The through diaphragm method is generally used.

[0003]

The joint between the steel tube column 1 and the H-shaped steel beam 2 needs to be reinforced in terms of strength and rigidity. In the through-diaphragm method, the pillars must be cut, the diaphragms must be welded, and then the pillars must be joined again, which requires a difficult operation to ensure accuracy.

Further, in the case of the inner diaphragm system, a special technique called electro-slag welding must be applied, the welding scale becomes large and the work is complicated. In addition, the amount of heat input is larger than in general welding, and the local temperature becomes high, so special consideration is required when applied to tempered steel.

In the through diaphragm and inner diaphragm systems, holes for filling concrete are made, but it is impossible to make large holes in order to secure the strength, the filling property of concrete is poor, and there is concern about the concrete filling property at the lower end of the diaphragm. Since much remains, a lot of studies are needed for the mixing and filling method of concrete.

Therefore, in order to avoid these problems,
Conventionally, the outer diaphragm system shown in FIG. 4 (a) has been adopted. However, since the diaphragm is flat, the out-of-plane drag force is weak and a large diaphragm is required. In addition, steel pipe pillar 1
The combination of the H-shaped steel beam 2 and the H-shaped steel beam made it necessary to manufacture a diaphragm each time, which was troublesome. Furthermore, since the diaphragm overhangs the outer peripheral portion of the steel pipe column 1, the diaphragm and the finishing material interfere with each other.

The present invention has been devised to solve these drawbacks.

[0008]

[Means for Solving the Problems] Four vertical diaphragms 3 in the shape of "C" are provided between the upper and lower flanges of the H-shaped steel beam 2 on the upper and lower flanges and the web of the H-shaped steel beam 2. Welding is performed so that the other end of the vertical diaphragm 3 is in contact with the steel pipe column 1 to join the steel pipe column 1 and the H-shaped steel beam 2.
When a steel pipe is filled with concrete to form a steel pipe concrete column, a stud 4 may be welded inside the steel pipe in order to improve the adhesion between the steel pipe and the concrete.

Further, if further strength is required, the L-shaped vertical rib reinforcement 6 or the cut T-shaped vertical rib reinforcement 7 is previously welded inside the steel pipe to strengthen the joint.

[0010]

EXAMPLES Examples are shown in FIGS. 1 (a) and 1 (b). Figure 1
1A is a cross-sectional view taken along the line CC of FIG. 1B, and FIG.
FIG. 3 is a sectional view taken along the line D-D in FIG. The vertical diaphragm 3 is welded to the upper and lower two flanges and the web of the H-shaped steel beam 2 to be joined to the rectangular steel pipe column 1 so that the left and right sides have a “C” shape, and the four vertical diaphragms 3 are joined together. The other ends are welded to the corners of the rectangular steel pipe column 1, respectively.

When the square steel tubular column 1 is a square steel tubular concrete column, the inside of the column is filled with concrete 5, but in order to improve the adhesion between the concrete 5 and the square steel tubular column 1, the inside of the square steel tubular column 1 is improved. Weld stud 4 to. The stud 4 may be omitted if the concrete 5 and the square steel tube column 1 are well attached.

FIGS. 2 (a) and 2 (b) show an embodiment in which an L-shaped vertical rib reinforcement 6 is welded to the rectangular steel tube column 1 in order to further enhance the strength of the joint. 2A is a BB view of FIG. 2B, and FIG. 2B is a sectional view taken along the line AA of FIG. 2A.

3 (a) and 3 (b) respectively show the cut T
This is an example in which the shaped vertical ribs 7 are welded to the inside of the rectangular steel tube column 1 for reinforcement.

Although all the examples shown here are rectangular steel pipe columns, they can also be applied to circular steel pipe columns.

[0015]

The effect of the present invention is that the vertical diaphragm 3
Efficiently transmits the force from the H-shaped steel beam 2 to the web portion of the rectangular steel tubular column, and has a strong reinforcing strength. Further, when the vertical rib reinforcements 6 and 7 are used, the out-of-plane resistance of the steel pipe against the tensile force from the H-shaped steel beam 2 is improved and the shear force from the H-shaped steel beam 2 is applied to the shaft of the concrete inside the steel pipe column 1. It also serves as a power transmission. Further, the vertical rib reinforcements 6 and 7 also serve as anchors for concrete and do not hinder the concrete filling property.

Further, the conventional general welding method can be used without using electro-slag welding, no large-scale and complicated welding equipment is required, and no special attention is required for tempered steel. .

At the same time, the shape of the vertical diaphragm 3 and the shape of the vertical rib reinforcements 6 and 7 inside the steel pipe column 1 are simple and easy to process. Further, the vertical diaphragm 3 has an advantage that it has less interference with the finishing material than the conventional flat plate-shaped outer diaphragm.

[Brief description of drawings]

FIG. 1 (a) is an embodiment of the present invention and is taken along line CC of FIG. 1 (b).
FIG. (B) It is a DD sectional view of FIG.

FIG. 2 (a) is a view showing an example in which an L-shaped vertical rib reinforcement is welded inside a steel pipe column according to the present invention. (B) A- in FIG.
FIG.

FIG. 3 (a) is a view showing an example in which a cut T-shaped vertical rib reinforcement is welded inside a steel pipe column according to the present invention. (B) It is a figure which shows another example which welded the cut T-shaped vertical rib reinforcement inside the steel pipe pillar by this invention.

FIG. 4A is a diagram of a conventional outer diaphragm system. (B) is a figure of the conventional inner diaphragm system.
(C) is a figure of the conventional through diaphragm system.

[Explanation of symbols]

1 ... Steel tube column, 2 ... H-shaped steel beam, 3 ... vertical diaphragm, 4 ... stud, 5 ... concrete, 6 ... L-shaped vertical rib reinforcement, 7 ... cut T-shaped vertical rib reinforcement

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takayuki Inoue 2-1-11-1 Tobita-cho, Chofu-shi, Tokyo Kashima Construction Co., Ltd. Technical Research Institute (72) Inventor Fumitoshi Sakuramoto 2--19-1 Tobita-cho, Chofu-shi, Tokyo Kashima Construction Co., Ltd. Technical Research Institute (72) Inventor Akio Tomita 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Seiichi Muramatsu 1-2-2 Moto-Akasaka, Minato-ku, Tokyo No. 7 Kashima Construction Co., Ltd. (72) Inventor Atsushi Tagami 2-191-1 Tobita-Su, Chofu City, Tokyo Kashima Construction Co., Ltd. Technical Research Institute

Claims (3)

[Claims] 1. An H-shaped steel beam 2 is provided with four vertical diaphragms 3 in the shape of "C" between the upper and lower flanges.
A joint structure of a steel pipe column and a beam, wherein the upper and lower flanges of the shaped steel beam 2 are welded to the web, and the other end of the vertical diaphragm 3 is welded so as to be in contact with the steel pipe column 1. 2. The joint structure between a steel pipe column and a beam according to claim 1, wherein vertical rib reinforcements 6, 7 are welded to the inside of the steel pipe column 1. 3. The joint structure of a steel pipe concrete pillar and a beam according to claim 1 or 2, wherein the steel pipe pillar 1 is filled with concrete 5.