JPH0762875A - Construction method of floor - Google Patents

Abstract

PURPOSE:To increase safety of working and reduce the construction period. CONSTITUTION:A plurality of reinforcement units 3 installed between small beams are laid down on a temporarily assembled base 11 and connected one after another on a plane and small beam steel skeletons 2 are fixed to complete a floor slab unit 10 placed between large beams. The completed floor slab unit 10 is suspended on the floor of a building assembled with large beam steel skeletons 1. After this second process has been completed, the small beam steel skeletons 2 and the large beam steel skeletons 1 and also the floor slab unit 10 and the large beam steel skeletons 1 are connected respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor construction method,
In particular, it relates to a method of constructing a floor of a steel frame reinforced concrete structure or a steel frame structure.

[0002]

2. Description of the Related Art As a method of constructing a floor of a steel frame reinforced concrete structure or a steel frame structure, there is a method using a fab deck (sold by ITOCHU Corporation). Hereinafter, a conventional floor construction method using a fab deck will be described with reference to FIG. Figure 2
As shown in, the floor construction method using the fab deck is
First, the building to be constructed is a girder steel frame 1 and a girder steel frame 2
After erection, the rebar unit 3 completed in advance at a factory is hung on the beam girder steel frame 2 and erected and laid at the floor construction position. Then, the worker connects the reinforcing bar unit 3 having been laid down with the large beam steel frame 1, the small beam steel frame 2 and another adjacent reinforcing bar unit 3 on site. The rebar unit 3 has a formwork (not shown) fixed to the lower surface,
After being suspended between the beamed steel frames 2 that have been built, the concrete is cast in situ to integrally form the whole and form the floor of the building.

[0003]

However, in the case of the above floor construction method, the following problems have occurred. In other words, the connection work of the reinforcing bar unit 3 laid at the construction position of the floor with the girder steel frame 1 and the girder steel frame and the connecting work of the reinforcing bar unit 3 require a lot of work at a high place in the way of building, and therefore there is a risk of falling to the worker. There is. In addition, when the reinforcing bar unit 3 is suspended, there is a risk that an operator may get his or her hand caught, so that it is necessary to pay close attention to the work, which causes a reduction in work efficiency and an extension of the construction period. .

The present invention has been made in view of the above problems, and an object of the present invention is to provide a floor construction method capable of improving work safety and shortening the construction period.

[0005]

According to the present invention, a rebar unit having a formwork fixed under a rebar frame and laid between beam beams is laid on a plurality of temporary assembly frames and connected to each other in a plane direction. Then, the first step of completing the floor slab unit installed between the girders by fixing the girder steel frame, and the completed floor slab unit to the position of the floor of the building constructed with the girder steel frame. A method for constructing a floor, comprising a second step of suspending and a third step of connecting the girder steel frame and the girder steel frame, and the floor slab unit and the girder steel frame, respectively, after the completion of the second step. Was used as a means for solving the above problems.

[0006]

According to the floor construction method of the present invention, the number of lifting operations is reduced by erection of the floor slab unit assembled in the ground between the girder steel frames. In addition, the connection of rebar units will greatly reduce the work involved in building by completing the floor slab unit with the ground structure.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIG. Reference numeral 10 in the figure denotes a floor slab unit that constitutes a floor of a steel frame reinforced concrete building constructed by the floor construction method of the present invention. As shown in FIG. 1, the floor slab unit 10 can be installed in a portion surrounded by four adjacent girder steel frames 1 by connecting the reinforcing bar units 3 shown in FIG. 2 on the same plane. It is formed in a rectangular plate shape. The girder steel frame 2 is fixed to the lower surface of the floor slab unit 10. Then, the floor slab unit 10 is installed between the girder steel frames 1 that have been built, the girder steel frame 1 and the girder steel frame 2 are fixed by bolts, and in-situ concrete is poured to build the building. It is designed to form a floor for things.

The floor construction method of the present invention will be described below.
In the floor construction method of the present invention, first, a pedestal is assembled on the ground close to a building to be constructed, and the floor slab unit 10 is constructed using this pedestal. (First step) The construction of the floor slab unit 10 is carried out by mounting the beam girders 2, 2, ...
Is installed at a predetermined position, and these beam girder steel frames 2, 2,
.. are laid on top of each other, and the beam girder frame 2 and the reinforcing bar unit 3 are welded to each other. When the fixing of the reinforcing bar unit 3 to the beam girder steel frame 2 is completed, the reinforcing bars of the reinforcing bar unit 3 are jointed together, and the stud dowel is driven into the beam girder steel frame 2 so as to project onto the upper surface of the reinforcing bar unit 3.

When the floor slab unit 10 is completed, the floor slab unit 10, as shown in FIG.
It is hung at the floor position of the building that is assembled (second step). At this time, the floor slab unit 10 is positioned so that the girder steel frame 2 fits within the position of the building to be constructed.

When the suspension of the floor slab unit 10 is completed, the small beam steel frame 2 and the large beam steel frame 1 are fastened with high tension bolts, the floor slab unit 10 and the large beam steel frame 1 are welded,
Beam reinforcement and floor slab unit 1 arranged around the large beam steel frame 1
Joint with 0 reinforcing bars (third step). On this occasion,
The fastening work between the small beam steel frame 2 and the large beam steel frame 1 is performed from the lower surface of the floor slab unit 10 to ensure a sufficient working space. When the integration of the floor slab unit 10 with the girder steel frame 1 is completed, the floor of the building is completed by pouring cast-in-place concrete in a later step.

The operation and effect of this embodiment will be described below. According to the floor construction method described above, the ground floor slab unit 10 is erected between the large beam steel frames 1, 1, ..., By reducing the number of lifting operations, the work efficiency is significantly improved, and the construction period is improved. Is shortened. In addition, the rebar units 3, 3, ...
Since the connection work of the comrades is almost on the ground, the work in the way of building is greatly reduced, there is no concern about the worker's fall accident, and the safety is improved.

[0012]

As described above, according to the floor construction method of the present invention, the formwork is fixed under the reinforcing bar frame,
A slab unit to be erected between girders is completed by laying a plurality of rebar units erected between girders on a temporary mounting frame, connecting them in the plane direction, and fixing girder steel frames. Step, and the completed floor slab unit is hung at the floor position of the building made up of girder steel frames, and after the completion of the second step, girder steel frame and girder steel frame, floor slab unit Since it has a third step of connecting the girder steel frame and the girder steel frame, respectively, by installing the floor slab unit assembled in the ground between the girder steel frames, the number of hanging operations can be reduced and the work efficiency can be improved. Is significantly improved, the construction period is shortened, and the work of connecting the reinforcing bar units is almost on the ground, so the work of building is greatly reduced, and there is no concern about worker accidents such as falling accidents. Excellent effect such as improved .

[Brief description of drawings]

FIG. 1 is a plan view showing a construction performed by the floor construction method of the present invention.

FIG. 2 is a plan view showing a conventional example.

[Explanation of symbols]

 1 Large beam steel frame 2 Small beam steel frame 3 Reinforcing bar unit 10 Floor slab unit

Claims (1)

[Claims] 1. A method for constructing a floor of a steel-framed reinforced concrete structure or a steel-framed structure, wherein a formwork is fixed under a reinforced frame, and a reinforced frame unit is erected between the beams.
Lay on multiple temporary mounting bases and connect to each other in the plane direction,
In addition, the first step of completing the floor slab unit installed between the girders by fixing the girder steel frame, and suspending the completed floor slab unit at the floor position of the building constructed with the girder steel frame. A method for constructing a floor, comprising: a second step; and, after completion of the second step, a third step of connecting the girder steel frame and the girder steel frame, and the floor slab unit and the girder steel frame, respectively.