JPH06229023A - Structure of connector part of pillar and beam - Google Patents

Abstract

PURPOSE:To ensure strength and facilitate a connecting operation by dispensing with the cut-off of a pillar to reduce a weld amount. CONSTITUTION:Reinforcing materials 4 for reinforcing connector parts are adapted to be easily disposed onto a square steel pipe pillar 2 without cutting off the square steel pipe pillar 2 by a welding operation for welding the reinforcing materials 4 to respective corner parts of the outer peripheral surface of the square steel pipe pillar 2 from the surface thereof. Also, the reinforcing materials 4 are disposed in positions where upper and lower flanges 3a of steel skeleton beams 3 abut against each other, so that the stress transmission of the reinforcing material 4 is surely performed to ensure the strength of connector part 1 of the pillar and beam. Further, the welding operation is limited only to welding of the reinforcing material 4 to the square steel pipe pillar 2, so that the connecting execution of the square steel pipe pillar 2 and steel skeleton material beam 3 is facilitated.

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 column of square steel pipe or steel pipe concrete and a beam of steel frame, in which the joint is reinforced in order to ensure stress transmission between the column and the beam. It is related to the pillar-beam joint structure.

[0002]

2. Description of the Related Art Conventionally, in this type of column-beam joint structure, a diaphragm for reinforcing the joint is arranged inside the square steel pipe column in order to transmit stress in the joint between the square steel pipe column and the steel beam. What is provided is generally known.

The method of arranging this diaphragm is as follows.
The rectangular steel tube column is cut at the upper and lower flange positions of the steel beam that penetrates the joint, and the diaphragm is joined to the end surface of the cut rectangular steel tube column. This is performed by an inner diaphragm method in which the diaphragm is cut at a position and the diaphragm is arranged at a position to be the upper and lower flange positions of the steel beam inside the rectangular steel pipe column.

In addition to this column cutting type, an outer diaphragm system is also used in which a rectangular steel tube column is not cut, but a diaphragm is arranged at the joint position of the steel beam on the outer peripheral surface of the rectangular steel tube column. .

[0005]

However, in the former two cases described above, the rectangular steel tube columns cut for joining the diaphragms must be welded again after the diaphragms are arranged. Therefore, it takes time and effort to manufacture the joint between the column and the beam, and it becomes difficult to secure the accuracy of the rectangular steel pipe column after welding again.

Further, in the latter case, when the diaphragm is arranged on the outer peripheral surface of the rectangular steel pipe column, a large amount of welding is required, the machining thereof is troublesome and time consuming, and further, it is not compatible with finishing.

As described above, in the conventional column-beam joint structure in which the diaphragm for reinforcing the joint is disposed inside the rectangular steel pipe pillar, in reality, there are weak points in construction. is there.

The present invention was devised in view of the above-mentioned circumstances, and an object thereof is to make it possible to reduce the amount of welding by eliminating the need for cutting columns, and at the same time, to facilitate the joining work without lowering the strength. It is to provide a column-beam joint structure that can be used for

[0009]

The joint structure between a rectangular steel pipe column and a steel frame beam according to the present invention comprises a strip plate formed in a substantially L-shaped cross section at each corner of the outer peripheral surface of the rectangular steel pipe column. The reinforcing material is attached so as to extend along the corners.
Further, the attachment of the reinforcing material at each corner portion is, on the outer peripheral surface of the rectangular steel pipe column, at the same collinear position as the position where the upper and lower flanges of the steel frame beam abut, and the distance between the respective reinforcing materials is the flange width. The same distance is used.

Then, instead of the diaphragm described in the section of the prior art, a reinforcing member for a strip plate having a substantially L-shaped cross section is attached to each corner portion on the outer peripheral surface of the rectangular steel pipe column to reinforce the joint portion. A reinforcing material for use in each corner of a rectangular steel tube column can be easily arranged without cutting the rectangular steel tube column.

Further, the attachment of the reinforcing material to the rectangular steel pipe column is
By carrying out on the same line as the position where the upper and lower flanges of the steel frame beam come into contact with each other, the stress can be surely transmitted to the reinforcing member and the strength of the column-beam joint is secured.

Further, the welding work is reduced only when the reinforcing material is attached to the rectangular steel tube column, and the joining work between the rectangular steel tube column and the steel frame beam can be easily performed.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The pillar / beam joint structure of the present invention will be described below with reference to embodiments shown in the drawings.

Rectangular steel tube column 2 and steel aggregate beam 3 (H-shaped steel beam)
A column / beam joint structure 1 (see FIGS. 1 and 2) for joining and is composed of a strip plate formed in a substantially L-shaped cross section at each corner of the outer peripheral surface of the rectangular steel pipe column 2. Reinforcement material 4
Are attached along the corners. Further, the reinforcements 4 are attached to the corners at the same position on the outer peripheral surface of the rectangular steel tube column 2 where the upper and lower flanges 3a of the steel frame beams 3 come into contact with each other, and the distance between the reinforcements 4 is set to the same. The distance is the same as the flange width.

The reinforcing member 4 in this embodiment is obtained by welding a planar L-shaped strip plate to the corner portion of the rectangular steel pipe column 2 at the same position as the position where the beam flange 3a is attached. It is a thing. Further, the reinforcing members 4 at the respective corners on the outer peripheral surface of the square steel tubular column 2 are attached in such a manner that the upper and lower flanges 3a of the steel frame beam 3 are sandwiched between the reinforcing members 4 as shown in FIGS.

In the column-beam joint structure 1 having such a structure, the rectangular steel tube columns 2 and the steel-beam members 3 are first joined to each other at each corner of the outer peripheral surface of the rectangular steel tube column 2. The reinforcing member 4 is disposed at a position where the upper and lower flanges 3a of the contacting member 3 abut.

After that, the reinforcing member 4 is attached to each corner of the outer peripheral surface of the rectangular steel tubular column 2 by welding the rectangular steel tubular column 2 and the reinforcing member 4 from the surface of the rectangular steel tubular column 2.

Next, as shown in FIG. 1, the steel frame beams 3 are welded to the square steel pipe columns 2 so that the upper and lower flanges 3a come into contact with the surfaces of the square steel pipe columns 2 between the reinforcing members 4. At this point, the work of joining the columns and beams is completed.

As a result, according to the pillar / beam joint structure 1 of the present invention, the pillar / beam joint structure 1 can be formed without cutting the rectangular steel pipe pillar 2.
Beam joints can be formed. Therefore, the joining accuracy is improved as compared with the conventional column-beam joining portion, and labor saving of the joining work can be achieved.

The upper and lower flanges 3a of the steel frame beam 3
Since the reinforcing member 4 arranged at the abutting position for ensuring the stress transmission can secure the strength of the portion to which the beam flange 3a is attached, that is, the column-beam joint,
The reinforcing member 4 in the joint structure 1 of the present invention can be expected to have the same effect as the outer diaphragm in the conventional column-beam joint structure.

FIG. 3 shows another embodiment of the column / beam joint structure 1 of the present invention.

Here, a case of a steel pipe concrete column in which concrete 5 is filled in the rectangular steel pipe column 2 will be described.

In the case of such a steel pipe concrete column, the shearing force from the steel aggregate beam 3 is transmitted to the concrete 5 in the rectangular steel pipe column 2 as an axial force. Therefore, when the adhesion between the steel pipe of the rectangular steel pipe column 2 and the concrete 5 is insufficient, the studs 6 are installed in the steel pipe of the rectangular steel pipe column 2 or the protrusions (not shown) are formed inside the rectangular steel pipe column 2. No.) is used for the steel pipe.

When it is considered that the stress concentration at the ends of the beam flange 3a is large, as shown in FIG.
It is also conceivable that the reinforcing member 4 and the end portion of the beam flange 3a are wrapped by notching.

[0025]

EFFECTS OF THE INVENTION A reinforcing material for reinforcing a joint is attached to each corner of the outer peripheral surface of a rectangular steel tube column by simply welding the surface of the rectangular steel tube column by welding to cut the rectangular steel tube column. Easy to do without Therefore, it is possible to improve the joining accuracy in the column / beam joint structure.

Further, by arranging the reinforcing member at each corner of the rectangular steel pipe column at the position where the upper and lower flanges of the steel frame beam contact, stress can be surely transmitted to the reinforcing member. Therefore, it is possible to secure the strength of the column-beam joint.

As described above, the joint structure according to the present invention is easy to manufacture because it can be manufactured without cutting the steel pipe which is the square steel pipe column like the through diaphragm and the inner diaphragm in the conventional joint structure. Moreover, since the reinforcing material is mounted vertically, there is an advantage that interference with the finish is not small like the outer diaphragm.

[Brief description of drawings]

FIG. 1 is a schematic view showing a pillar-beam joint structure of the present invention.

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

FIG. 3 is a cross-sectional view showing another embodiment of the column-beam joint structure of the present invention.

FIG. 4 is a cross-sectional view showing still another aspect of the pillar / beam joint structure of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Column / beam joint structure, 2 ... Square steel tube column, 3 ... Steel beam, 3a ... Flange, 4 ... Reinforcement material, 5 ... Concrete, 6
…stud.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Atsushi Tagami 2-19-1 Tobita-cho, Chofu-shi, Tokyo Inside Kashima Construction Co., Ltd. (72) Inventor Fumitoshi Sakuramoto 2-1-11-1 Tobita, 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.

Claims (1)

[Claims] 1. A joint portion structure formed by joining a prism of a square steel pipe or a steel pipe concrete and a beam of a steel aggregate, wherein a cross section of approximately L is formed at each corner of the outer peripheral surface of the prismatic steel pipe column.
A reinforcing member constituted by a band-shaped strip is attached in a state along the corner portion, and the mounting of the reinforcing member at each corner portion is performed on the outer peripheral surface of the rectangular steel pipe column as described above. A column-beam joint structure characterized in that the upper and lower flanges of a steel frame beam are on the same line as the positions where they abut, and that the distance between the reinforcing members is the same as the flange width or less.