JP2000240156A - Joint part structure for building of hybrid structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rationally conduct stress treatment at a joint part of a building in hybrid structure which is constructed of columns each in a concrete-infilled steel pipe structure and beams each in a steel structure. SOLUTION: A beam 4 is penetrated horizontally through a joint part, joining steel pipes 7 are welded to the upper and lower parts of the beam, the joining steel pipes and steel pipe columns 2 are arranged together with joining reinforcing bars 6 arranged so as to extend over both of them, and with concrete 3 placed for filling integrally into the joining steel pipes and the steel pipe columns, the joining reinforcing bars are buried and anchored in the concrete, and thereby a column 1 is formed with the joining steel pipes and the steel pipe columns joined together. A joint steel pipe 8 connecting to the joining steel pipes is provided at the joint part by welding, and the inside thereof is filled with concrete placed integrally. The joining reinforcing bars 6 are arranged so as to penetrate vertically through the joint steel pipe.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a joint between a column and a beam in a composite structure building including a column made of a filled steel tube concrete and a beam made of a steel frame.

[0002]

2. Description of the Related Art FIG. 3 shows a typical structure of a connecting portion in the above-mentioned complex structure building. In the drawing, reference numeral 1 denotes a column made of a filled steel pipe concrete made by filling a column steel pipe 2 with concrete 3, and 4 denotes a steel beam made of an H-shaped steel, and the beam 4 penetrates horizontally in a joint portion. Thus, a beam penetrating connection is formed. The column steel pipes 2 are arranged above and below the intersection of the beams 4 in both directions, and around the intersection of the beams 4, blocking plates 5 are attached so as to be continuous with the column steel pipe 2. The concrete 3 is integrally cast and filled into the inside and the closing plate 5. Then, the joining rebars 6 are arranged so as to penetrate the connection vertically.
Are fixed in the concrete 3 in the column steel pipe 2 so that the upper and lower columns 1 and the beams 4 in each direction are structurally integrated via the connecting reinforcing bars 6. .

[0003]

In the above structure, the stress at the end of the column 1 is mainly treated by the joint reinforcing bar 6, and therefore, when the stress is large, a large number of large-diameter joint reinforcing bars 6 are used. In some cases, the necessity arises, and the fitting of the connection part becomes complicated, or the cross section of the pillar 1 itself needs to be enlarged, and an effective remedy has been demanded.

[0004]

SUMMARY OF THE INVENTION In view of the above circumstances, the invention of claim 1 is directed to a structure of a joint portion between a pillar and a beam in a composite structure building including a column made of a filled steel pipe concrete and a beam made of a steel frame. At this connection, the beam is horizontally penetrated in the joint portion, and a joining steel pipe is welded above and below the beam, and the joining steel pipe and the column steel pipe are connected to each other so as to straddle both of them. And concrete is cast and filled integrally into the joining steel pipe and the column steel pipe, and the joining steel bar is embedded and set in the concrete to join the joining steel pipe and the column steel pipe to form a column. To form.

According to a second aspect of the present invention, in the first aspect of the present invention, a connection steel pipe continuous with the joining steel pipe is provided on the connection part by welding, and the concrete is integrally formed in the connection steel pipe. It is to be cast and filled.

According to a third aspect of the present invention, in the second aspect of the present invention, the joining reinforcing bar is provided so as to penetrate vertically through the inside of the connection steel pipe.

[0007]

FIG. 1 shows a first embodiment of the present invention. In the structure of the first embodiment, the joining steel pipes 7 are welded above and below the beam 4 at the connection portion, and the joining steel pipes 7 and the column steel pipes 2 are connected to each other. Further, a joint steel pipe 8 continuous with the joint steel pipe 7 is welded to the joint part, and a joint reinforcing steel 6 is arranged so as to penetrate the joint steel pipe 8 up and down. The length of the steel pipe 6 is set so that the end of the steel pipe 6 extends over the joining steel pipe 7 and the column steel pipe 2.

Then, concrete 3 is cast and filled integrally into the column steel pipe 2, the joining steel pipe 7, and the connection steel pipe 8, and the joining reinforcing bar 6 is embedded and set in the concrete 3. The steel pipe 7 and the column steel pipe 2 are joined and structurally integrated to form a filled steel pipe concrete column 1.

According to the above structure, since the joining steel pipe 7 directly welded to the beam 4 constitutes the end of the column 1, the column 1
The stress at the end is mainly processed by the joining steel pipe 7, and additionally, the joining reinforcing bar 6 is additionally treated.
Therefore, as compared with the conventional structure in which the column end stress treatment is performed only by the joint reinforcing bar 6, the stress treatment is remarkably advantageous, and the strength of the joint can be sufficiently enhanced. It can be simplified rather than being complicated. Moreover, since the connection steel pipe 8 is provided in the connection portion so as to be continuous with the column 1, the strength of the connection portion is further enhanced. The cross-sectional shape of the joining steel pipe 7 may be made to match the column steel pipe 2, and its length may be designed optimally according to the stress to be processed.

FIG. 2 shows a second embodiment. In the first embodiment, a part of the stress at the column end is treated by the reinforcing bar 6 by inserting the reinforcing bar 6 through the inside of the connection steel pipe 8 up and down. In the second embodiment, the joining reinforcing steel 9 is omitted at the joint portion and provided so as to straddle the joining steel pipe 7 and the column steel pipe 2. In this case, the column end stress is processed only by the joining steel pipe 7, but the stress treatment is remarkably performed by using the joining steel pipe 7 having a large cross section and high strength as compared with the conventional reinforcing steel bar 6. It can be performed advantageously. Of course, the joining between the column steel pipe 2 and the joining steel pipe 7 can be performed by the joining reinforcing bar 9 without any trouble.

[0011]

According to the first aspect of the present invention, a steel pipe for welding is welded above and below a beam, a column steel pipe is connected to the steel pipe, and the steel pipe for connection and the steel pipe are joined by a reinforcing steel bar to form a column. Therefore, by adopting a large-section and high-strength steel pipe for joining, the stress treatment at the column end becomes significantly more advantageous, and the reinforcement of the joint can be sufficiently enhanced. Fitting can be simplified.

According to the second aspect of the present invention, since the joint steel pipe is welded to the joint part and the concrete pipe is welded to the inside of the joint steel pipe and concrete is integrally poured into the inside thereof, the proof strength of the joint part is further enhanced. Is done.

According to the third aspect of the present invention, since the reinforcing steel for connection is provided so as to penetrate vertically through the inside of the connection steel pipe, not only the steel pipe for connection but also the reinforcing steel for bonding partially processes the stress at the column end. More effective.

[Brief description of the drawings]

FIG. 1 is a diagram showing a first embodiment of the present invention.

FIG. 2 is a diagram showing a second embodiment of the present invention.

FIG. 3 is a view showing a conventional general structure of a joint portion between a column and a beam in a composite structure building including a filled steel tube concrete column and a steel frame beam.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Column 2 Column steel pipe 3 Concrete 4 Beam 6 Reinforcing bar 7 Connecting steel tube 8 Connection steel tube 9 Reinforcing bar

Claims (3)

[Claims] 1. A structure of a joint between a column and a beam in a composite structure building comprising a filled steel pipe concrete column and a steel frame, wherein the beam is penetrated in a horizontal direction at the joint. The connecting steel pipe and the column steel pipe are connected to each other, and the reinforcing steel is arranged so as to straddle both of them, and concrete is integrated into the connecting steel pipe and the column steel pipe. A joint portion structure in a composite structure building, wherein the joint steel pipe and the column steel pipe are joined to form a pillar by casting and filling the joint reinforcing bar in the concrete. 2. A joint steel pipe continuous with the joining steel pipe is provided on the joint part by welding, and the concrete is integrally cast into the joint steel pipe and filled therein.
Connection structure in the complex structure building described. 3. The joint structure in a complex structure building according to claim 2, wherein the joint reinforcing bar is provided so as to penetrate vertically through the inside of the joint steel pipe.