JPH0231185B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a reinforcing bar assembly method used in cast-in-place concrete construction.

Conventionally, this type of reinforcement method has been carried out by tightening individual reinforcing bars on-site, which results in complicated on-site construction and long construction times, complicated process management, and the need to cut on-site. This has the disadvantage of increasing material waste. Therefore, in order to overcome these drawbacks, conventional methods have been considered in which vertical reinforcing bars and horizontal reinforcing bars are welded in advance to form a wire mesh, which is then transported to the site and assembled. (For example, Japanese Patent Application Laid-open No. 48-25332). However, in the past, longitudinal and transverse reinforcements were simply welded together in a mesh pattern, and this type of mesh reinforcing steel was usually only able to withstand shearing force, but did not have sufficient bending strength. In the past, in order to ensure strength against bending, it was necessary to use reinforcing bars with a large diameter, or to increase the overall strength by arranging reinforcing bars twice in the wall thickness direction. The disadvantage is that the cost is high. Furthermore, in order to partially reinforce the structure, reinforcing bars must be installed on site, which has the disadvantage of increasing the number of on-site work.

This invention has been made with the aim of solving the above-mentioned conventional drawbacks.

In order to achieve the above object, this invention welds vertical and horizontal reinforcements to each other in a mesh pattern, and also welds vertical reinforcements and horizontal reinforcements in a mesh pattern to wall reinforcements with reinforcing reinforcing bars welded to both horizontal ends. , and the corner wall reinforcements are bent at right angles and reinforced reinforcing bars are welded to both horizontal ends and corners, and vertical and horizontal reinforcements are similarly welded to each other in a mesh pattern, with horizontal It consists of reinforced reinforcing bars welded together and beam bars placed above and below the building opening, and these preassembled reinforcing bars, corner wall bars, and beam bars are connected to each other for reinforcement. Features.

Hereinafter, the configuration of the present invention will be explained based on an illustrated embodiment. FIG.
It is a welded wire mesh in which horizontal bars 2, 2, etc. of deformed reinforcing bars are welded to each other in a mesh-like manner. Various types of pre-assembled reinforcing bars as shown in FIGS. 2 to 4 are manufactured.

To explain these, FIG. 2 shows a wall reinforcement 4, in which the welded wire mesh 3 is formed into a rectangular shape with a predetermined width, and two reinforcing deformed reinforcing bars 5 are vertically welded to each of the left and right edges of the welded wire mesh 3. are doing. The reinforced deformed reinforcing bars 5 are reinforced against bending, since the deformed reinforcing bars constituting the longitudinal reinforcements 1 and the horizontal reinforcements 2 are resistant to shear force. FIG. 3 shows a corner wall reinforcement 6, which is made of a rectangular shape with a predetermined width like the wall reinforcement 4 described above, bent at right angles, and furthermore, two irregular shaped reinforcements are attached to the bent part for bending reinforcement. Reinforced reinforcing bar 7
are welded vertically. Finally, FIG. 4 shows the beam reinforcements 8 placed in the upper and lower parts of the opening, in which the welded wire mesh 3 is processed into a rectangular shape with a predetermined width, and the transverse reinforcements 2, 2, . , weld the two horizontal reinforcing reinforcing bars 9, 9 along the edges, and weld the ends of the transverse bars 2 so that these two reinforcing reinforcing bars 9, 9 are parallel to each other in the horizontal direction. The deformed reinforcing reinforcing bars 9, 9 are bent into a triangular shape 10 so as to embrace them.

Next, to explain the reinforcement assembly method using each pre-assembled reinforcing bar, first, as shown in Fig. 5, vertical reinforcement 1
Then, the horizontal reinforcement 2 is laid and the base reinforcement 11 is arranged. Next, as shown in FIG. 6, on this base reinforcement 11,
Beam reinforcements 8, 8 to become foundation beams at the bottom of the first floor opening 12
are arranged so that the reinforcing reinforcing bars 9 are above and below, and similarly, the wall reinforcements 4 are placed at predetermined positions on both sides of the beam reinforcements 8.
Corner wall reinforcements 6 are arranged at each corner. that time,
The two reinforcing reinforcing bars 9, 9 above and below the beam reinforcement 8 sandwich the wall reinforcing bars 4 or the corner wall reinforcing bars 6, and the reinforcing reinforcing bars 9, 5 that intersect with each other are bound together. In addition, beam reinforcement 8
In this method, several types with different heights are prepared depending on the size of the opening 12, and these are arranged at respective positions. Further, the reinforcing reinforcing bars 9 of the beam bars 8 have their ends bent in a U-shape in the left-right direction, and furthermore, these reinforcing reinforcing bars 9 are bent 13 at right angles at the portions directly connected to the corners. At the top of the opening 12 there are 2
The beam reinforcements 8 for floors are similarly connected.

As described above, according to the present invention, it is only necessary to connect the wall reinforcements, corner wall reinforcements, and beam reinforcements that have been preassembled in the shape of a welded wire mesh to each other on site, and therefore, each reinforcing bar can be connected one by one on site. Compared to conventional construction methods, the reinforcement work on site is much simpler, and the work is easier and can be completed in a shorter period of time.
These pre-assembled reinforcing bars can be efficiently manufactured in advance at a factory, and moreover, compared to cutting on-site, waste of material can be minimized, and the process can be carried out at a lower cost overall. In particular, in the present invention, reinforcing reinforcing bars are welded in advance to each of the wall reinforcements, corner wall reinforcements, and beam reinforcements formed in the shape of a welded wire mesh, at both left and right ends or at both upper and lower ends, as well as at the corner portions. Therefore, it has sufficient strength not only for shearing but also for bending, and therefore there is no need to increase the strength by increasing the diameter of the entire reinforcing bar or to arrange double wire mesh, resulting in low cost. There are effects that can be implemented. On the other hand, since there is no need to install reinforcing bars on site, the on-site work is also simplified accordingly.

[Brief explanation of drawings]

Figure 1 is a perspective view of a welded wire mesh, Figures 2 to 4 are perspective views of wall reinforcements, corner wall reinforcements, and beam reinforcements, respectively.
5 and 6 are perspective views showing the assembly method. 1...Vertical line, 2...Horizontal line, 4...Wall line, 5...
Reinforced reinforcing bars, 6...Corner wall reinforcements, 7...Reinforced reinforcing bars,
8... Beam reinforcement, 9... Reinforced reinforcing bar.

Claims (1)

[Claims] 1. Vertical and horizontal reinforcements are welded together in a mesh pattern, and vertical reinforcing reinforcing bars are welded to both left and right ends of the wall reinforcement, and vertical and horizontal reinforcements are also welded in a mesh pattern and bent at right angles. Corner wall reinforcements with vertical reinforcing bars welded to both left and right ends and corner parts, vertical reinforcements and horizontal reinforcements similarly welded to each other in a mesh pattern, and horizontal reinforcing bars welded to both upper and lower ends, and Consisting of beam bars placed above and below the opening,
This reinforcing bar pre-assembled reinforcement construction method is characterized in that reinforcement is performed by connecting these pre-assembled wall reinforcements, corner wall reinforcements, and beam reinforcements to each other.