JPH086383B2 - Floor construction method - Google Patents

Description

The present invention relates to a floor construction method in a building.

(Prior Art) Conventionally, in the construction method of floors on general floors and sloping roof floors in buildings, etc., (i) a general construction method in which a formwork is assembled between beam members constituting the floor and reinforcement and concrete placement are performed. .

(Ii) A construction method in which a PC plate and a semi-PC plate are erected between the beams that make up the floor and concrete is placed.

(Iii) The unsupported construction method in which concrete is placed on the deck plate or the steel plate floor plate integrated with the floor reinforcement installed between the beams constituting the floor is selected and constructed according to the scale and structure of the construction.

(Problems to be Solved by the Invention) However, the first general construction method requires a great deal of labor and time because an expert worker works in each work step.

The second PC method is often manufactured in factories, which increases costs and limits the size of the board for transportation.

The third unsupported construction method aims to save labor by omitting the formwork and supporting work by using the deck plate and the steel plate floor plate integrated with the floor reinforcing bar, but assembling the floor reinforcing reinforcing bar, The work of placing concrete remains.

The present invention has been proposed to solve the above-mentioned conventional problems, and the purpose of the present invention is to assemble a floor formwork and a reinforcing bar,
The point is to provide a floor construction method that secures the labor saving of site work such as concrete pouring and the structural performance of the floor.

(Means for Solving the Problem) In order to achieve the above-mentioned object, according to the floor construction method of the present invention, it is necessary that the truss-type main bar is integrally connected to the narrow steel plate in the longitudinal direction. A number of floor-reinforcing steel plates are combined together, and a precast concrete slab made by placing floor concrete over each floor, leaving a cut in the peripheral edge, is installed between the opposite beams. Then, concrete is placed on the cutout portions of the peripheral portions of the floor slabs adjacent to each other on the beam material.

(Operation) According to the present invention, as described above, a required number of floor-reinforcing bar-integrated steel plate floor plates, which are configured by integrally connecting truss-type main bars over the longitudinal direction on a narrow-width steel plate, are combined, and The floorboard is used as a floor formwork, and by placing concrete with a cutout portion left at the peripheral edge of the floorboard, a highly rigid precast concrete floorboard in which the floor-reinforced steel plate floorboard and concrete are integrated is obtained. To be

In the present invention, next, the floor slabs are installed between the beam members facing each other, and concrete is placed in the peripheral cutout portions of the adjacent floor slabs on the beam members to join the floor slabs to each other. By this, the floor with which the horizontal rigidity is secured between the precast floor slabs is constructed.

(Examples) The present invention will be described below with reference to illustrated examples.

(1) is a steel plate floor plate integrated with a floor reinforcing bar, and truss type main bars (3) are arranged at appropriate intervals along the longitudinal direction of a narrow rectangular steel plate (2) and are integrated with the steel plate (2). (6th
(See Fig. 7 and Fig. 7) Thus, the required number of floor steel bars integrated with steel bars (1a) (1b)
(1c) (1d) combined floorboard for one unit is used as a floor form, and the reinforcing bars (4) are laid across the truss type main bars (3) and concrete (5) is placed. Then, a precast concrete floor slab (A) having a cutout portion (6) at its peripheral portion is produced.

Thus, as described above, the precast concrete floor slab (A) prefabricated at the site or factory is erected between the beam members (B) facing each other by the lifting machine, and the stud bolts ( While planting 7),
Over the gaps (6) and (6) of the adjacent floor slabs (A), the truss type main bars (3) and the distribution muscles (4) of the respective floor slabs (A) are added to each other. (8) is welded, and concrete (C) is placed across the adjacent cutouts (6) and (6) to join the precast floor slabs (A). (Refer to FIG. 4) In addition, in the middle of the opposing beam members (B), the cutout portions (6) of the precast concrete floor slabs (A) that are adjacent to each other
(6) Truss-type main bars (3) of each floor slab (A)
And the reinforcing bars (8) are welded over the distribution bars (4) and the concrete (c ') is placed. (Refer to FIG. 5) In the illustrated embodiment, the precast concrete floor slab (A) is divided into three adjacent beam members (B), but in the case of manufacturing on site, it is not divided. By using the precast concrete floor slab (A) having a size of one sheet, as shown in FIG. 5, the mutual joining of the floor slabs (A) can be omitted and the workability can be improved.

In addition to the horizontal floor shown in the above-mentioned implementation, this construction method has a sloped floor,
For example, when applied to a roof floor with a steep slope, it is a more effective construction method.

That is, in the case of a roof floor with a steep slope, since the poured concrete flows out, it is necessary to assemble a formwork on the floor top surface and pour the concrete, but according to this method, the adjacent precast concrete floors are used. Concrete (C) at the joint formed by the cutouts (6) at the periphery of the plate (A)
Since it is only piling, concrete does not flow out, and the conventional formwork on the floor can be omitted.

(Effects of the Invention) According to the present invention, as described above, a combination formed by combining a required number of floor reinforcing bar-integrated steel plate floor plates formed by integrally connecting truss type main bars over the longitudinal direction on a narrow steel plate. The floor plate is used as a floor form as it is, and a precast concrete floor slab is constructed by placing floor concrete on the upper part of the floor frame leaving a cutout portion at the peripheral edge. Precast concrete floor slabs with the required dimensions can be obtained by combining floor boards to any size, and even if there is no facility such as concrete beds as in the past, the floor slabs can be easily converted into PCs and transported. The work is omitted.

Thus, at the time of floor construction, the precast cast concrete floor slabs are installed between the beams facing each other by a lifting machine, using the cutouts left at the peripheral edge of the floor slabs,
The floor slabs are integrated by placing concrete on the respective cutout portions of the adjacent floor slabs on the same beam.

As described above, according to the floor construction method of the present invention, only the joint portion between the precast concrete floor slabs is treated, and the site work such as formwork, bar arrangement, and concrete placing can be greatly omitted. Therefore, a structurally reliable floor is constructed, the construction period is shortened, and the construction cost is reduced.

[Brief description of drawings]

FIG. 1 is a plan view of a precast concrete floor slab used in the floor construction method according to the present invention, and FIG. 2 is an arrow II of FIG.
-II and 3 are plan views in which the right half of the floor constructed by the method of the present invention is cut away, and Figs. 4 and 5 are IV-IV views of Fig. 3 respectively. 6 is a perspective view of a steel plate floor plate integrated with a floor reinforcing bar, and FIG. 7 is a vertical sectional view thereof. (A) …… Precast concrete slab, (B) …… Beam material, (C) (C ′) …… Concrete, (1) …… Floor rebar integrated steel plate floor plate, (2) …… Steel plate, (3 ) ... Truss type main bar, (5) ... Concrete, (6) ... Missing section.

Claims (1)

[Claims] 1. A required number of floor reinforcing bar-integrated steel plate floor plates formed by integrally connecting truss-type main reinforcing bars in a longitudinal direction on a narrow steel plate are combined, and a peripheral edge portion is formed over each floor plate. A precast concrete floor slab made by pouring floor concrete leaving the cut portion is installed between the beam members facing each other, and concrete is applied to the cutout portion of each peripheral portion of the floor slabs adjacent to each other on the beam member. A floor construction method characterized by placing a floor.