JPH03161641A - Construction of reinforced concrete building - Google Patents

Abstract

PURPOSE:To shorten term of works and to improve efficiency in execution of work by erecting temporary supports that are to be left in place of the underside of beam reinforcements in the span direction, and by installing PCa boards or slab half PCa boards to brackets that are provided to the temporary supports. CONSTITUTION:A frame 3 is assembled and installed to the upper part of a temporary support 2, and top reinforcements 1a and bottom reinforcements 1b for reinforcements 1 for a prefabricated beam are fixed to the upper and the lower parts of the frame. Brackets 4 provided to the support 2 are made to sustain half PCa boards 7, and forms 9 for the beam and forms 10 for a wall are fabricated and attached to both sides of the support 2. Half PCa boards 11 are set on timberings 6 for corridors or the like and column reinforcements 12 for the upper story are added by press- connection. On the upper side of the half PCa boards 7, the column reinforcements 12 are surrounded with half PCa boards 13 and forms 19 are attached round wall PCa members 14. Slab reinforcements are then arranged on the upper face of the half PCa boards 7 and concrete 20 is cast in place to the inside of the beam forms 9, the wall forms 10 and the half PCa forms 13 for the columns, making the concrete integral.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention particularly relates to a construction method for a reinforced concrete building using a slab PCa board or a half-slab PCa board.

[Vt rice 1 branch technique 1] As a construction method for reinforced concrete buildings using slab half PCa board, when vertical members such as door boundary walls are cast on site, slab half PCa board is placed on top of the form material. The slab, beams, and walls were poured in concrete.

[Problem to be solved by the invention] However, in the above-mentioned construction method, the Irub PCa board is installed after assembling formwork for columns, beams, and walls, so work on the floor is done after work on the lower floor, and during that time There was a problem in that the reinforcing bar workers had to wait for work, prolonging the construction period.

The present invention was made in order to solve the above-mentioned problem of laziness, and its purpose is to shorten the construction period by performing reinforcing bar assembly work on the upper floor and formwork work on the lower floor in parallel. The purpose of this invention is to provide a construction method for reinforced concrete buildings that not only improves construction efficiency but also improves workability. [Means for Solving the Problems] The method of constructing a reinforced concrete building of the present invention is to erect a temporary support for burying under the beam reinforcing bars in the span direction, and attach a slab PCa board or a bracket attached to the temporary support. It is characterized by constructing a half-slab Pct board.

[Example 1] Hereinafter, an example of the present invention will be described with reference to the drawings. Prevent the deflection of prefabricated beam reinforcing bars 1. The temporary support 2
are arranged within the wall between the doors, and are buried within the wall.
Details of the support 14m of the planar reinforcing bars 1 by the temporary struts 2 are shown in FIG. IA.

In the figure, a frame 3 is attached to the upper part of the temporary support 2 using a chevron-shaped w4 or the like, and the upper and lower reinforcements 1a and 1b of the prefabricated beam reinforcing bars 1 are fixed to the upper and lower parts of the seven frames 3, respectively. ．． A bracket 4 is attached to the side of the seven frames 3, and is adapted to receive a slab half PCa plate to be described later. In addition, the base 81 of the temporary support column 2
S2 a is anchored in slab concrete. When the installation of the prefabricated beam reinforcing bars 1 is completed, the reinforcing bars 5 for the door boundary wall on which the temporary supports 2 are arranged are arranged as shown in FIG. In addition, temporary slab supports 6 will be installed in the hallway and balcony areas as necessary. Next, as shown in Fig. 3, a half-slab PCa board 7 is constructed. This erection work is carried out by receiving the end of the half-slab PCa board 7 on the bracket 4 of the temporary support 2, as shown in FIG. 3A. The temporary support 2 is designed to receive only the load of the half-slab PCa board, and when pouring concrete is placed, a support 8 is installed under the half-slab PCa board 7 for support. When the erection of the slab half-PCa board 7 is completed, below it, the beam formwork 9 and wall formwork 10 are assembled on both sides of the prefabricated beam reinforcing bars 1 and temporary supports 2 (tpJ3A
(see figure). Also, as shown in Figure tjIJ3, a half-PCa board 11 is set on the support 6 of the hallway and part of the balcony. Furthermore, add the column reinforcements 12 for the upper floor by applying pressure. Moreover, on the upper side of the constructed slab half-PCa board 7, as shown in FIG.
Assemble formwork 13 and wall PCa member 14. Fourth
As shown in Figures A and 154B in detail, the installation state of the pillar PCa type 13 is adjusted using the installation adjustment bolt 15, and the level II 4 adjustment bolt 1 is adjusted.
Adjust the height of the pillar by step 6. Also, the pillar cow PCa
The formwork 13 and the wall PCag material 14 are assembled and fixed while being adjusted using built-in adjustment bolts 17 at the assembly portion. As shown in FIG. 4B, openings 13a are formed in the half-column PCa formwork 13 to integrate the door boundary wall in the span direction with cast-in-place concrete.

Furthermore, a beam formwork 19 is assembled around the beam reinforcing bars 18 in the beam direction. Next, as shown in Figure 5,
At the same time, it is supported by temporary supports 2, and slab reinforcement is placed on the upper surface of the slab half PCa board 7, and on the slab half PCa board 7, inside the beam form 9, inside the wall form 10, and on the column PCa. Cast-in-place concrete 20 is simultaneously poured into the formwork 13, etc. (Fig. 6). In the above embodiment, a half-slab PCa board was constructed, but the present invention is not limited to this, and a slab PCa board may also be used. [Effect of the invention J (1) In order to lay the slab PCa board before formwork work for beams, columns, walls, etc., the pillars on the upper floor of the slab PCa board 5! P
It is possible to install Ca8lS materials, assemble reinforcing bars, and formwork for beams, walls, etc. on the lower floor at the same time. (2) Because the slab PCa board is laid in advance, formwork assembly work on the lower floor can be done even in rainy weather. (3) Temporary supports placed under the beams in the span direction not only support the slab PCal but also help prevent the prefabricated beam reinforcing bars from deflecting. In addition, by providing temporary supports, the amount of supporting work is reduced, and workability can be ensured as required during formwork work in the girder direction and span direction.

[Brief explanation of the drawing]

Figure 1 is a construction explanatory drawing showing the state of erection of prefabricated beam reinforcing bars using temporary supports, Figure IA is a detailed view of the installation of prefabricated beam reinforcing bars using temporary supports, Figure @2 is a wall reinforcement diagram, and Figure 3 is a half-slab. A construction explanatory diagram showing the erection of PCa boards, etc., Figure @3A is a detailed diagram of the erection state, Figure 4 is an explanatory diagram of installation of column PCa members, etc., Figure 4A is a detailed diagram of installation of column PCa members, and Figure 4B The figure is a cutting diagram along the I94A diagram B-B, Figure 5 is a construction explanation of the prefabricated iron sieve beam on the upper floor, and Figure 6 is
The figure is an explanatory diagram of pour-in-place concrete construction. ]・・
Beam prefabricated reinforcing bars, 1a/t-. End reinforcement, I b... Lower end reinforcement, 2... Temporary support IL, 2a... Base, 3... 7 frame, 4 - Bracket/F, 5... Door boundary wall reinforcement, 6 Slab support, 7... Slab j P C a board, 8...
・Support, 9...Beam edge frame, 10...Wall formwork, 1
1. Half PCa board, 12. Column reinforcement, 13. 11 frames to column half PCa, +3a. = Open [1 part, 14-wall 1) C a part village, l5... Erecting adjustment bolt, 16 ... Level adjustment bolt, I7 ... Construction adjustment bolt, 18 ... Beam reinforcement, 19 ... Beam formwork, 20 ... Cast-in-place concrete.

Claims (1)

[Claims] A construction method for a reinforced concrete building characterized by erecting a temporary support for burying under the beam reinforcing bars in the span direction, and erecting a slab PC_a plate or a slab half PC_a plate on a bracket attached to the temporary support.