JP2002047726A - Building having composite structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reliably and firmly join a column with a concrete-filled steel pipe structure and a floor with a flat slab structure or a flat plate structure by means of a simple rational structure. SOLUTION: A building having a composite structure is composed of the column 1 with the concrete-filled steel pipe structure wherein concrete 5 is infilled into the steel pipe 4 and the floor 2 with the flat slab structure wherein a capital 6 is formed in the part joined to the column 1. The steel pipe 4 of the column 1 is consecutively installed above and below the capital 6, and the concrete 5 within the steel pipe 4 is integrated with the capital 6. A joint reinforcing bar 7 for joining the column 1 and the floor 2 together is disposed in such a state as to allow the capital 6 to be inserted above and below in the joint part between the column 1 and the floor 2, and both upper and lower end parts of the reinforcing bar 7 are inserted into the steel pipe of the column 1 and anchored to the inside of the concrete 5. The floor with the flat plate structure without the capital 6 is adopted in place of the floor 2 with the flat slab structure having the capital 6.

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 building and, more particularly, to a building having a composite structure including a column made of concrete filled with steel pipe and a floor having a flat slab structure or a flat plate structure.

[0002]

2. Description of the Related Art As is well known, reinforced concrete structures (RC structures), steel frame reinforced concrete structures (SRC structures), and steel frame structures (S structures) are the most common structures.
In recent years, rationalization of construction, shortening of construction period, cost reduction,
Various structures have been proposed for the purpose of improving seismic resistance and the like, and among them, a structure made of a filled steel pipe concrete column in which a steel pipe is filled with concrete is considered to be promising.

[0003]

However, in the case of a column made of concrete filled with steel pipe as described above, the beams and floors joined to the column are structural members of different types from the column.
It is essential to develop an effective and appropriate structure for rationally joining these different kinds of structural members.

[0004] In view of the above, it is an object of the present invention to provide a building having a rational structure including columns made of filled steel pipe concrete and a floor having a flat slab structure or a flat plate structure.

[0005]

SUMMARY OF THE INVENTION The present invention is directed to a concrete column filled with concrete filled in a steel pipe and a flat slab structure in which a capital is formed at a joint with the column. A composite structure building composed of floors, wherein the steel pipes of the columns are connected vertically above and below the capital, concrete in the steel pipes and the capital are integrated, and the columns and the floor are connected to each other. Joint reinforcing bars for joining are arranged in a state where the capital is vertically inserted at their joints, and upper and lower ends of the joint reinforcing bars are inserted into the steel pipe of the column and fixed in the concrete in the steel pipe. It is characterized by having been done.

A second aspect of the present invention is a composite structure building comprising a filled steel pipe concrete column formed by filling a steel pipe with concrete, and a flat plate structure floor which is entirely formed flat. In addition, steel pipes of the pillars are provided continuously above and below the floor so that the concrete in the steel pipes and the floor are integrated, and a joining rebar for joining the pillars and the floor is connected to each other. In the part, the floor is vertically inserted, and the upper and lower ends of the reinforcing bar are inserted into the steel pipe of the column and fixed in the concrete in the steel pipe.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a view showing a part of a frame of a complex structure building according to a first embodiment of the present invention, wherein FIG.
Is a vertical sectional view, and FIG.

In the figure, reference numeral 1 denotes a pillar, 2 denotes a floor, and 3 denotes a foundation. The pillar 1 is a so-called filled steel pipe concrete structure in which a steel pipe 4 is filled with concrete 5.
Has a flat slab structure in which a capital 6 is formed at the joint with the column 1. Steel pipe 4 of pillar 1 is capital 6
The concrete 5 and the capital 6 that are filled in the steel pipe 4 are integrated with each other. In addition, joint reinforcing bars 7 for joining the column 1 and the floor 2 are disposed in a state where the capital 6 is vertically inserted at their joints (ports), and upper and lower ends of the joint reinforcing bars 7 are arranged. Are respectively inserted into the steel pipes 4 of the upper and lower columns 1 and are fixed in the concrete 5 in the steel pipes 4.
Thereby, the column 1 and the floor 2 are structurally integrally joined via the joint reinforcing bars 7.

In the first embodiment, the basic 3
Reinforcing bar 8 for joining to the bottom floor column 1
The upper ends of the joint reinforcing bars 8 are inserted into the steel pipe 4 of the pillar 1 on the lowest floor and are fixed in the concrete 5 in the steel pipe 4, and the joints are formed. The pillar 1 on the lowest floor and the foundation 3 are structurally integrally joined via a reinforcing bar 8.

In order to construct the above-mentioned building, the joint reinforcing bar 8 is made to protrude when the foundation 3 is constructed, and the steel pipe 4 of the pillar 1 at the lowest floor is erected and temporarily supported so as to cover the joint reinforcing bar 8. A floor form is assembled on the upper part thereof, a floor reinforcement 9 is arranged, and a joint reinforcing bar 7 is arranged at a connection portion. Then, concrete is poured into the steel pipe 4 and the floor form to form the column 1 and the floor form. The floor 2 may be formed.

Alternatively, after the steel pipe 4 has been built, the reinforcing steel 7 is arranged on the upper part of the steel pipe 4 and concrete 5 is immediately poured into the steel pipe 4 and filled therein. After that, the floor 2 may be formed by laying the floor concrete so as to be connected to the concrete 5 in the steel pipe 4.

In the building having the above structure, since the pillar 1 is made of a filled steel pipe concrete structure, the pillar 1 has not only a higher proof strength than ordinary RC columns, but also the column 1
In the construction of (1), it is not necessary to arrange the reinforcing bars and to assemble or disassemble the column formwork, so that the workability can be greatly improved.

In addition, since the floor 2 having a flat slab structure without beams is employed, the work relating to the beam construction can be omitted and only the flat floor 2 can be constructed instead. Therefore, the construction is simplified and streamlined. In addition to the fact that the beam shape does not protrude significantly from the ceiling surface, it is possible to secure a large effective ceiling height and secure a comfortable indoor space, and the plan of the plan is limited by the position of the beam There is also an advantage that the degree of freedom in design can be increased because there is nothing.

A simple and simple structure in which a joint reinforcing bar 7 having a capital 6 inserted vertically into the steel pipe 4 of the column 1 and fixed to the concrete 5 is used, while joining the column 1 and the floor 2 together. Since sufficient strength can be ensured, the connection portion is not complicated and there is no need to use a special joining member or the like. In addition, since the foundation 3 and the column 1 are joined by the same structure, the joining can be easily performed, and the joining strength between them can be sufficiently secured.

FIG. 2 shows a second embodiment of the present invention. In the first embodiment, the floor 2 has a flat slab structure having the capital 6 as the structure of the floor 2, but in the second embodiment, the floor 20 has a flat plate structure that is entirely flat without any capital. The floor 20 having such a flat plate structure has a slightly thicker overall thickness than the floor 2 having the above-mentioned flat slab structure having the capital 6, but can form a flat floor entirely with characters. Work related to construction can be further simplified and streamlined. Of course, also in this case, it is needless to say that the structural reinforcing strength between the column 1 and the floor 20 can be ensured without any trouble by the bonding reinforcing bar 7.

[0016]

According to the first aspect of the present invention, there is provided a composite structure comprising a concrete pillar made of filled steel pipe and a floor having a flat slab structure having a capital, and the steel pipes of the pillar are provided continuously above and below the capital. Then, the concrete and the capital in the steel pipe are integrated with each other, and joint reinforcing bars for joining the column and the floor are arranged in such a state that the capital is inserted vertically at the joints, and the upper and lower ends thereof are joined. Since the structure is inserted into the steel pipe of the column and fixed in the concrete inside the steel pipe, the column made of concrete filled with steel pipe provides superior strength and the rationalization of the construction of the column. The floor makes it possible to secure a comfortable indoor space with a large effective ceiling height and to simplify and streamline the construction of the floor. It is possible to structure reliably firmly bond the columns and floor, is effective it is structurally quite reasonable.

The invention according to claim 2 is a composite structure building comprising a filled steel pipe concrete column and a floor having a flat plate structure formed entirely flat, wherein the steel pipe of the column is formed of a floor. The concrete and the floor in the steel pipe are connected vertically and integrated with each other, and the reinforcing bars for connecting the columns and the floor are arranged in such a state that the floor is inserted vertically at the joints. Since the upper and lower ends are inserted into the steel pipe of the column and fixed in the concrete in the steel pipe, the column made of the concrete filled with steel pipe can provide a higher strength and the same strength as the invention of claim 1. The floor with a completely flat flat plate structure can secure a comfortable indoor space with a large effective ceiling height, and can simplify and streamline the construction of the floor, and at the same time, join Since the pillars and floor with a simple structure and simple due to muscle can be reliably firmly bonded, it is effective are structurally quite reasonable.

[Brief description of the drawings]

FIG. 1 is a diagram showing a main part of a building according to a first embodiment of the present invention.

FIG. 2 is a diagram illustrating a main part of a building according to a second embodiment of the present invention.

[Explanation of symbols]

 1 pillar 2 floor (flat slab structure floor) 4 steel pipe 5 concrete 6 capital 7 joint reinforcement 9 floor reinforcement 20 floor (flat plate structure floor)

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akihiro Ogawa 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation F-term (reference) 2E125 AA03 AA57 AB13 AC29 AE01 AG03 AG06 AG08 AG28 AG60 BA02 BA34 BB08 BC02 BD01 BE07 BE08 BF04 CA82 CA83 EA33 2E163 FA02 FF17

Claims (2)

[Claims] 1. A composite structure building comprising a filled steel pipe concrete column formed by filling concrete in a steel pipe, and a flat slab structure floor formed by forming a capital at a joint with the column. The steel pipes of the columns are connected vertically above and below the capital so that the concrete and the capital in the steel pipes are integrated with each other, and a connecting rebar for connecting the columns and the floor is provided at the joints thereof. A composite structure building, wherein a capital is vertically inserted, and upper and lower ends of the joint reinforcing bar are inserted into a steel pipe of the column and fixed in concrete in the steel pipe. 2. A complex structure building comprising a filled steel pipe concrete column formed by filling concrete into a steel pipe, and a flat plate structure floor formed entirely flat. Steel pipes are connected vertically above and below the floor, and the concrete in the steel pipe and the floor are integrated, and a connecting reinforcing bar for connecting the pillars and the floor connects the floor at the joint thereof. A composite structure building which is disposed so as to penetrate vertically and has both upper and lower ends of the joining rebar inserted into a steel pipe of the column and fixed in concrete in the steel pipe.