JPH0152538B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention aims to use mesh reinforcements for slabs, which are mainly used as reinforcement in steel-framed reinforced concrete structures, to use construction mesh reinforcements, which are stretched between beam steel frames and used as temporary passages, as work scaffolding. Regarding how to use it.

Currently, when constructing floor slabs in the construction of steel-framed reinforced concrete structures, deck plates or keystone plates are often used as waste forms and reinforcement is placed on top of them. In addition, it is unreasonable and uneconomical, as it increases the construction cost, and requires several types or large amounts of spacers to ensure the reinforcement thickness, and a lot of labor and time are spent on the construction. be.

Furthermore, since there is no work path during reinforcement placement or work, it is necessary to walk directly on the reinforcement arrangement or to create a special work path, which greatly affects construction efficiency and workability. It has many drawbacks, including reduced accuracy.

The method of the present invention focuses on this point, and aims to solve this problem and provide a method for using stretched reinforcing bars, which are originally used as reinforcing reinforcing bars for concrete structures, as work passages. It is something to do.

Next, in carrying out the method according to the present invention, first, the configuration of a device for constructing this mesh reinforcement between steel beams will be explained using an example. In FIG. It is a base substrate in which V-shaped restraining notches 1a, 1a are provided at equal intervals, and tightening bolts 1b, 1b are provided upwardly protruding from both left and right sides.

Reference numeral 2 denotes a holding plate formed into an inverted U shape and provided with lower pieces 2a, 2a in order to receive the plate-shaped base substrate 1. Inverted V-shaped restraining notches 2b, 2b are provided at two equal intervals, 2a, 2a, and bolts 1b, 1b, for tightening the base substrate 1 are provided on both left and right sides of the upper surface.
Through-holes 2c, 2c are provided through which 1b is inserted.

3, 3 are bolts 1 for tightening the base substrate 1 when the presser plate 2 is mounted on the base substrate 1;
This is a nut for tightening the presser plate 2 by screwing into the parts b and 1b.

FIGS. 2 to 5 are perspective views showing other embodiments of the apparatus used in the method of the present invention,
Figure 2 shows nuts 4, 4 on both left and right sides of the base substrate 1.
is fixed and the holding plate 2 is fitted onto the base substrate 1 and then tightened with tightening bolts 5, 5.

FIG. 3 shows the reverse combination of FIG. 1, in which the base substrate 1 is formed into a U-shape, the holding plate 2 is flat, and the tightening bolts 6 on the base substrate 1 side are
6 through the through hole 2c on the holding plate 2 side and the nuts 7, 7
It is a type of tightening method.

Figure 4 shows the base substrate 1 and holding plate 2 in a U-shape and an inverted U-shape.
It is formed into a letter shape, and has a size that allows the outer width of one of the two to fit into the inner width of the other, and both are tightened with tightening bolts 8, 8 and nuts 9, 9.

FIG. 5 shows another embodiment of the base substrate, in which inverted triangular restraining notches 1a, 1a (holes) are provided at the center of the front surface.

Next, construction examples for carrying out the method of the present invention will be explained with reference to FIGS. 6 to 10.

The base substrate 1 is fixed in advance by welding along the axis of the upper surface of the beam steel A (before or after assembly) at a predetermined pitch (the mounting pitch of the mesh reinforcement B).

After assembling the beam steel A, the ends of the mesh reinforcement B at a predetermined pitch are aligned from the front and back, and placed along the restraining notches 1a, 1a of the base board 1, and the presser plate 2 is immediately attached to the base board. 1, and the mesh strips B are inserted into the restraining notches 1 of the base substrate 1 by the restraining notches 2b, 2b of the holding plate 2.
Tighten with nuts 3, 3 while pressing against a, 1a, and restrain the mesh muscles B, B immediately after.

After carrying out these operations and installing mesh reinforcements B, B', etc. between the steel beams A, A', as shown in Figure 9,
Scaffolding boards C, C'... are laid on the top surface and used as a temporary passage.

Further, with the slab formwork D, D'... beam formwork E, E'... assembled, the scaffolding board C on the mesh reinforcement B, B'...
After C'... is removed, mesh reinforcements B, B'... are used as slab reinforcements (lower reinforcements) of the structure, upper reinforcement B1 is arranged, and concrete is poured.

In addition, the arrangement of the restraining notches formed in the base substrate and the presser plate in the mesh reinforcement construction device used in the method of the present invention may be limited to the case where the vicinity of each end of the mesh reinforcement is restrained individually, or when each end of the mesh reinforcement is restrained individually, In order to restrain the vicinity of the end at the same time, it is possible to install two or more in several places to restrain, but the ease of construction,
The selection may be made in consideration of rationality, reliability, economy, etc.

According to the method of the present invention as described above, after the ends of the mesh reinforcement are restrained and stretched between the steel beams, a scaffold board is laid on the top surface and used as a work scaffold, thereby making it possible to replace the conventional method. There is no need to walk directly on the reinforcing bars or create a special work path.
There is no need to reduce reinforcement accuracy.

In addition, it is more economical than using waste formwork such as deck plates, and there is no need for spacers to maintain cover thickness or construction for that purpose.
It has excellent construction and workability, and is rational and economical.

[Brief explanation of drawings]

FIG. 1 is a perspective view of one embodiment of the mesh reinforcement construction device used in the method of the present invention, FIGS. 2 to 5 are perspective views of other embodiments of the construction device, and FIGS. 6 to 10 The figure is an explanatory diagram showing a state in which the method of the present invention is implemented. 1... Base board, 2... Holding plate, A... Beam steel frame, B, B'... mesh reinforcement, C, C'... scaffolding board,
D, D'...Slab formwork, E, E'...Beam steel frame.

Claims (1)

[Claims] 1. By tightening a base substrate formed with at least one restraining notch fixed along the axis of the beam steel frame and a holding plate having a restraining notch formed opposite to the restraining notch of this base substrate. , using the constructed mesh reinforcement as a scaffold, wherein the ends of the mesh reinforcement are restrained by the partner restraining notches, the mesh reinforcement is stretched between the beam steel frames, and this is used as a temporary passage. Method.