JP3716374B2 - Precast concrete column member of composite structure and construction method of structure using the same column member - Google Patents

Description

[0001]
[Industrial application fields]
In the present invention, a precast concrete column (hereinafter referred to as a PC column) having a composite structure comprising a reinforced steel concrete structure (hereinafter referred to as an SRC structure) and a reinforced concrete structure (hereinafter referred to as an RC structure) and a beam are steel structures (hereinafter referred to as an S structure). This relates to a column member having a composite structure and a method for constructing a structure using the column member.
[0002]
[Prior art]
Conventionally, there are SRC structure, RC structure, and S structure as the building structure of the building. In the design method, the first floor pillar is SRC structure, the second floor is RC structure, and the beam is S structure. After constructing the foundation pillar, build the steel pillar of the first floor, build the steel beam, attach the deck plate as the floor to the steel beam instead of the formwork, assemble the formwork into the pillar, Placing floor concrete to construct the first floor, then joining the first floor column reinforcement and assembling the second floor column reinforcement and the strip that surrounds the same column reinforcement, the steel frame bracket for the beam frame on the column head After assembling the formwork to the pillar, the first floor part is constructed by placing the pillar and floor concrete, and then joining the first floor pillar and surrounding the second floor pillar and the same. After assembling the band, attaching the steel bracket for the beam frame to the column head, and assembling the formwork to the column, Ried was Da設 and Frames the steel beam between said steel bracket are constructed by installing a roof or floor.
[0003]
[Problems to be solved by the invention]
However, the prior art has the following problems.
That is, the column is composed of a structure in which the SRC column part, the RC column part, and the steel bracket for the beam frame of the column head are combined, and in order to construct these, as described above, Reinforcement assembly, formwork assembly, disassembly, etc. are carried out by on-site work, requiring specialized workers for each work process, causing variations in construction accuracy depending on the skill of each professional, and further mutual work Since the construction is performed in advance so as not to interfere, a considerable schedule is required, and it is also influenced by the weather, which causes the construction period to be delayed.
[0004]
The present invention has been proposed in view of the above-mentioned problems of the prior art. The purpose of the present invention is to manufacture and assemble column members by industrialization, to improve work efficiency by omitting field work as much as possible, It is to provide an P C pillar member of the composite structure to shorten the.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, a PC column member having a composite structure according to the present invention includes a foundation, a lowermost floor on the foundation in which the column is made of steel reinforced concrete, and an upper layer on which the column is made of reinforced concrete. The PC column member having a composite structure for constructing a composite structure including a floor and a steel beam as a beam on each floor, wherein the PC column member is integrated by vertically and vertically connecting a plurality of floor columns of the composite structure. The PC column member includes a column leg portion embedded in the foundation, and the lowermost floor portion of the PC column member is a steel beam for joining steel beams. A steel column provided with a joining bracket projecting, and the PC column member includes a reinforcing bar composed of a column bar extending over a plurality of floors of the composite structure and a band bar surrounding the column bar; with which, the PC post member, the stigma portion, of the composite construct It includes a beam steel for joining the steel beam which supports the roots, the PC post member, characterized in that it is constituted by a concrete molding factory or in the field site.
[0006]
The invention of claim 2 is configured by implanting stud bolts on four sides of the column base portion of the PC column member of the composite structure.
[0007]
[Action]
The PC column member having a composite structure according to the present invention is a member in which columns of a plurality of floors of a composite structure are continuously arranged in the vertical direction, and includes column bases embedded in the foundation. The lower floor portion includes a steel column provided with a steel beam joint bracket for joining the steel beam , and the PC column member is a column bar extending over a plurality of floors of the composite structure. When provided with a more becomes reinforcing rebar and hoop surrounding the same pillar muscles, the stigma portion includes a beam steel for joining the steel beam which supports the roof of the complex construct, factory or field site It is configured by molding with concrete, and thereby, high-quality PC pillars can be obtained by high-precision quality control.
[0008]
The invention according to claim 2, wherein the four sides of the pedestal portion of the PC Columns of the composite structure, by constructing and implanting the stud bolt, columnar leg portion and the base and is integral via the respective stud bolts ized by the shear resistance of the stud bolt, the bending rigidity of the column base is increased.
[0009]
【Example】
The present invention will be described below with reference to illustrated embodiments.
FIG. 1 is a longitudinal sectional view showing a composite structure according to the present invention. The first floor is SRC construction, the second floor is RC construction except for a part, and the top floor is S construction.
In the figure, A is a building, a foundation K, an underground beam K ₁ , a PC column member C constructed by integrating a plurality of columns on the top and bottom, and a steel beam G on the first floor, and a beam that supports the roof R. It is composed of a steel beam G ′ on the second floor, a floor S 2 on the second floor , and a roof R. In the figure, F is a floor on the first floor , and P is a pile.
[0010]
2 and 3 show the skeleton and completed state of the PC column member C, respectively. The PC column member C includes a column base t embedded in the foundation K, and the first floor steel beam joint bracket 2 protrudes horizontally. The column main reinforcement 3 and the band reinforcement 4 surrounding the column main reinforcement 3 are arranged over the length of a plurality of floors on the steel column 1 made of the H-shaped steel provided , and the roof R is provided on the column head. A beam steel frame 5 for joining a supporting steel beam G ′ is provided, and a concrete column 6 is cast and coated on the steel column 1, the column main bar 3, and the band bar 4 of the column frame thus configured. Yes. Further, a stud bolt 7 is planted on the opposite flange of the H-shaped steel steel column 1 at the column base, arranged in parallel with the web of the steel column 1, and a reinforcing plate in which the stud bolt 8 is planted. An angle-shaped reinforcing steel frame material 10 is joined between 9 and the opposing flange of the steel column 1.
[0011]
Next, the process of constructing a structure using the PC pillar member C having the composite structure will be described.
After constructing the pile P on the foundation ground of the structure, excavate to the foundation ground and build the pillar foundation K in the lower part of the pillar in advance, and install the PC underground beam K ₁ between the adjacent foundation K At the same time, a PC column member C is erected on the foundation K. At this time, the column base t is fixed integrally to the concrete of the foundation K by the stud bolts 7 and 8.
[0012]
Next, a steel beam G on the first floor is constructed between adjacent PC column members C, a floor S on the second floor is constructed between the steel beams G, and a steel beam G ′ on the second floor is installed on the roof floor. The roof R is installed, the excavated ground is backfilled, and the concrete of the first floor F is placed.
[0013]
【The invention's effect】
The PC pillar member of the composite structure according to the present invention is a PC member that is configured integrally by vertically connecting a plurality of floor pillars of a composite structure, and includes a column base embedded in the foundation. The lowermost part of the member is provided with a steel column projecting a steel beam joint bracket for joining the steel beam , and the PC column member extends over a plurality of floors of the composite structure. and the bar streaks, provided with a reinforcement consisting of a hoop which surrounds the same pillar muscles, the stigma portion includes a beam steel for joining the steel beam which supports the roof of the complex construct, Since it is constructed by concrete molding at the factory or site site, it is firmly embedded in the foundation via the column base, and each floor steel beam and the steel beam connecting beam of each bracket and column head Joining the top steel beam and the roof of each floor on the same beam Engineering is easily done, by being a PC Columns This pillar member and the concrete molding factory or in the field site, many workers like construction site, without requiring particular profession, multiple floors The PC pillar member is made into a member by an industrialization method at a factory or a site, so that a high-quality PC pillar can be obtained by high-quality quality control.
[0014]
In the invention of claim 2, since stud bolts are planted in four directions of the column base part of the PC column member of the composite structure, the column base part and the foundation are integrated, and by the shear resistance of the stud bolt, the flexural rigidity of the column base is increased.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a structure constructed by a method according to the present invention.
FIG. 2 is a front view showing a steel column and a column reinforcing bar of a PC column member having a composite structure according to the present invention.
FIG. 3 is a front view showing a completed state of the PC pillar member of FIG. 2;
FIG. 4 is a view as seen from the arrow in FIG. 2;
FIG. 5 is an arrow view of FIG. 2;
FIG. 6 is a view taken from the direction of the arrows in FIG.
7 is a knee view diagram of FIG. 2. FIG.
FIG. 8 is a hojo diagram of FIG.
[Explanation of symbols]
A building C PC column member F 1st floor G G 1st floor steel beam G '2nd floor steel beam K foundation K' PC underground beam P Pile R Roof S 2nd floor t Column base 1 Steel column 2 Steel beam Bracket for joining 3 Column main reinforcement 4 Band reinforcement 5 Beam steel frame 6 Concrete 7 Stud bolt 8 Stud bolt 9 Auxiliary plate 10 Reinforced steel frame

Claims (2)

For constructing a composite structure including a foundation, a lowermost floor on the foundation in which the column is a steel reinforced concrete structure, and an upper floor above the foundation in which the column is a reinforced concrete structure, and the beams on each floor are steel beams , In precast concrete column members with composite structure,
The precast concrete column member is a precast concrete member integrally configured by continuously connecting columns of a plurality of floors of the composite structure up and down,
The precast concrete column member has a column base embedded in the foundation,
The portion of the lowermost floor of the precast concrete column member is provided with a steel column projecting a steel beam joint bracket for joining a steel beam ,
The precast concrete column member includes a reinforcing bar composed of a column reinforcement extending over a plurality of floors of the composite structure, and a band reinforcement surrounding the column reinforcement,
The precast concrete column member includes a beam steel frame for joining a steel beam that supports the roof of the composite structure to a column head.
The precast concrete column member is formed by concrete molding at a factory or site site,
A precast concrete column member having a composite structure characterized by that.   The precast concrete column member having a composite structure according to claim 1, wherein stud bolts are planted on four sides of the column base portion of the precast concrete column member having the composite structure.

Images