JP2000240155A - 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, steel pipe columns 2 are arranged above and below the beam, joining steels 7 to be inserted into the steel pipe columns are welded to the beam, and the columns and the beam are joined together with the joining steels anchored to infilled concrete 3 in the steel pipe columns. In addition to the joining steels, joining reinforcing bars penetrating vertically through the joint part and are anchored at both ends to the infilled concrete in the steel pipe columns are used together. Both of the joining steels welded to the beam and the joing reinforcing bars penetrating vertically through the joint are anchored to the infilled concrete in the steel pipe columns, and thereby the columns and the beam are joined together. A joint steel pipe 9 is provided at the joint part, and the inside thereof is filled with concrete placed integrally.

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. 6 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 the same time, the beam is horizontally penetrated in the connection portion, and the column steel pipes are arranged above and below the beam, and a welding steel frame inserted into the column steel pipe is welded to the beam,
The joining steel frame is fixed in the concrete that is cast and filled in the column steel pipe, and the column and the beam are joined via the joining steel frame.

According to a second aspect of the present invention, in the first aspect of the present invention, the connection portion is vertically inserted, and both ends of the connection portion are inserted into upper and lower column steel pipes and fixed in concrete in the column steel pipe. And a connecting reinforcing bar for connecting the column and the beam.

A third aspect of the present invention relates to a structure of a joint between a column and a beam in a composite structure building also including a filled steel pipe concrete column and a steel frame, wherein the beam is formed at the joint. And the column steel pipes are arranged above and below the beam, and a welding rebar inserted into the column steel pipe is welded to the beam, and the joint is inserted vertically. Other connecting reinforcing bars with both ends inserted into the upper and lower column steel pipes, and both connecting reinforcing bars are respectively fixed in the concrete in the column steel pipes, whereby the columns and beams are connected via the connecting reinforcing bars. Is to be joined.

[0007] The invention of claim 4 is the invention of claim 1, 2, or 3
In the invention, a connection steel pipe continuous with the column steel pipe is provided in the connection part, and the concrete is integrally cast into the connection steel pipe.

[0008]

FIG. 1 shows a first embodiment of the present invention. In the structure of the first embodiment, the pillar 1 and the beam 4
The joining is performed by a joining steel frame 7 instead of the conventional joining reinforcing bar 6.

That is, in the first embodiment, the joining steel frame 7 made of H-section steel is welded to the upper and lower flanges of the beam 4 in one direction, and these are inserted into the upper and lower column steel pipes 2 and joined. The upper and lower columns 1 and beams 4 are integrally joined by the joining steel frame 7 by fixing the steel frame 7 in the concrete 3 which is cast and filled in the column steel pipe 2, and the stress at the end of the column 1 is reduced. This is to be processed by the joining steel frame 7. In FIG. 1A, reference numeral 8 denotes a reinforcing rib provided at the connection portion so as to be continuous with the upper and lower joining steel frames 7. Reference numeral 9 denotes a connection steel pipe provided at a connection portion so as to be continuous with the column steel pipe 2, and the inside of the connection steel pipe 9 is also filled with concrete 3 integrally with the inside of the column steel pipe 2. .

[0010] According to the above structure, a large-section and high-strength joining steel frame 7 can be employed in place of the conventional joining reinforcing bar 6, so that the stress treatment at the end of the column 1 becomes significantly more advantageous. It is possible to sufficiently increase the proof stress of the connection part, and it is possible to simplify the connection part without making it complicated, and it is possible to make the cross section smaller than the pillar 1 of the conventional structure. It is. In addition, a reinforcing rib 8 is provided in the connection part so as to be continuous with the joining steel frame 7, and a connection steel pipe 9 is provided so as to be continuous with the column steel pipe 2, and the concrete 3 is also integrated therein. The strength of the joint is further enhanced.

The sectional shape and dimensions of the joining steel frame 7, the length of insertion into the column steel pipe 2, and the like may be optimally designed according to the stress to be processed. 2 and 3 show a modified example, in which FIG. 2 employs a connecting steel frame 10 having a cross-shaped cross section and is welded to the flanges of the beams 4 in both directions, and FIG. It is adopted as.

FIG. 4 shows a second embodiment. This is the same as the conventional reinforcing steel bar 6 and the connecting steel frame 10 in the first embodiment.
(With a cross-shaped cross section similar to that shown in FIG. 2), and the stress is processed by both the joint reinforcing steel 6 and the joint steel frame 10. Excellent stress treatment is possible as compared with the one in the first embodiment. Reference numeral 12 denotes a reinforcing rib provided at the connection portion so as to be continuous with the joining steel frame 10.

FIG. 5 shows a third embodiment. This does not use the joining steel frame as in each of the above-described embodiments, but uses a joining reinforcing bar 13 welded to the flange of the beam 4 in addition to the conventional joining reinforcing bar 6. In this case, since the treatment of the column end stress is performed by both of the joining reinforcing bars 6, 10, the same effects as those of the above embodiments can be obtained. The joining reinforcing bar 10 according to the third embodiment is the same as the first embodiment.
It may be added to the structure of the embodiment or the second embodiment.

[0014]

According to the first aspect of the present invention, a joining steel frame is welded to a beam penetrating a connection part horizontally, inserted into a column steel pipe and fixed in concrete, so that the joining steel frame is interposed. The structure is designed to join columns and beams, so it is possible to use a large-section, high-strength joint steel frame, and the stress treatment at the column ends becomes significantly more advantageous, and the reinforcement of the joints is sufficiently enhanced. In addition, the fitting of the connection can be simplified, and the column section can be saved.

According to the second aspect of the present invention, in addition to the above-described joint steel frame, a joint reinforcing bar that is vertically inserted through the joint is used, so that both of them can perform excellent stress treatment.

According to the third aspect of the present invention, since the column and the beam are joined by both the joining rebar welded to the beam and the joining rebar inserted vertically through the joint, excellent stress treatment can be achieved. It is.

According to the fourth aspect of the present invention, since a steel pipe continuous with the column steel pipe is provided in the connection part and concrete is poured into the inside thereof integrally, the strength of the connection part is further reinforced.

[Brief description of the drawings]

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

FIG. 2 is a view showing another example of the joining steel frame.

FIG. 3 is a view showing still another example of the joining steel frame.

FIG. 4 is a diagram showing a second embodiment of the present invention.

FIG. 5 is a diagram showing a third embodiment of the present invention.

FIG. 6 is a view showing a conventional general structure of a connection 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]

 REFERENCE SIGNS LIST 1 pillar 2 pillar steel pipe 3 concrete 4 beam 6 joining rebar 7 joining steel 8 reinforcing rib 9 connection steel pipe 10 joining steel 11 steel pipe (joining steel) 12 reinforcing rib 13 joining rebar

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Nobuhiro Takema 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation (72) Inventor Kentaro Nakagawa 1-2-3 Shibaura, Minato-ku, Tokyo Shimizu Construction F-term (reference) 2E125 AA04 AA13 AB01 AB17 AC04 AC07 AC15 AC16 AG03 AG32 AG57 BB08 BB12 BB17 BB35 BC09 BD01 BE08 BF06 CA82 CA90 EA01

Claims (4)

[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. Column steel pipes are arranged above and below the beam, and a joint steel frame inserted into the column steel pipe is welded to the beam, and the joint steel frame is cast into the column steel pipe and filled in concrete. A joint structure in a complex structure building, wherein the column and the beam are joined via the joining steel frame after being fixed to the building. 2. In addition to the joining steel frame, the connection portion is vertically inserted, and both ends thereof are inserted into upper and lower column steel pipes, and are fixed in concrete in the column steel pipe, thereby forming columns and beams. 2. A joint structure in a complex structure building according to claim 1, further comprising a joining reinforcing bar for joining the joint with the building. 3. 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 beam, wherein the beam is penetrated in a horizontal direction at the joint. Column steel pipes are arranged above and below the beam, and a reinforcing bar inserted into the column steel pipe is welded to the beam, and the joint is inserted up and down to move both ends of the beam up and down. The other connecting rebar inserted in the column steel pipe is provided, and both of the connecting rebars are fixed in the concrete in the column steel pipe to join the column and the beam via the connecting rebar. The structure of the joints in a complex structure building. 4. A steel pipe connected to the column steel pipe at the connection part, and the concrete is integrally cast and filled into the steel pipe. 3. The structure of the connection part in the complex structure building according to 3.