JP2013133701A - Binding wire for reinforcement work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To develop a binding wire for reinforcement work corresponding to resource saving while maintaining binding operability equal to a binding wire for reinforcement work being used in the prior arts.SOLUTION: A binding wire for reinforcement work is provided for tying a crossing portion and a joint portion of reinforcing-bars in reinforcing-bar assembly. The binding wire for reinforcement work folded for tying while using a hacker that is a binding jig is characterized in that one of two folded portions has such a length as to tie the crossing portion or the joint portion of the reinforcing-bars and the other portion is formed into a length equal to or more than 1/3 of the length of the one portion and equal to or less than 7/8 of the length of the one portion.

Description

The present invention relates to a binding wire for reinforcing bar construction used for tightly connecting a crossing portion and a joint portion of reinforcing bars when assembling reinforcing bars.

At the time of rebar assembly, to adjust the cross section and joint part during rebar reinforcement, adjust the ultrafine steel wire to an appropriate length as shown in Fig. As shown in FIG. 5, a plurality of binding wires for reinforcing bar construction are used, and a plurality of such binding wires are bundled and removed one by one from the bundle. A hacker's claw, which is a binding jig, is hooked on the bent portion of the wire, and the binding wire is wound around the crossing portion and the joint portion of the reinforcing bar as shown in FIG. The result is the state shown in FIG.

Such a binding wire for reinforcing bars is shown in, for example, Japanese Patent Application Laid-Open No. 2000-336844.

When an expert reinforcing bar ties the crossover part and the joint part at the time of reinforcing bar arrangement, the end of the binding wire for rebar construction is placed inside the crossover part of the reinforcing bar as shown in FIG. 6 (B). It is folded.

JP 2000-336844 A

However, recent rebars are not enough to fold inside the crossover part of the rebar, and at the current construction site, the crossover part at the time of rebar reinforcement in the state of jumping as shown in FIG. And the bundling work for fastening the joint part is completed.

However, as shown in FIG. 6 (A), when the reinforced concrete binding wire jumps out of the position where the reinforcing bar crossing part and the joint part are wound, it is struck. The end part which jumped out on the surface of the installed concrete remains, and as a result, rust and dirt are generated due to condensation on the surface of the concrete.

For this reason, in the reinforcing bar assembly bar arrangement inspection by the designer or general contractor before setting up the formwork before placing the concrete frame, FIG. 6 (A As shown in Fig. 6 (B), both ends of the part that jumps out from the binding position contact the formwork as shown in Fig. 6 (B). After the reinforcing bars are bound, a correction instruction from the designer or a general contractor is issued so that they are folded inside the crossing portion of the reinforcing bars.

Moreover, as shown in FIG. 6 (A), the conventionally used binding wire for rebar construction shown in FIG. 4 is formed by tightening the crossover portion and the joint portion of the reinforcing bar arrangement during rebar assembly. Both ends of the binding wire for rebar construction are in a state of jumping out from the binding position, but the length of the jumping out remains very long.

Therefore, it is necessary to fold the reinforcing wire binding wire inside the reinforcing bar crossing part before setting up the formwork, but the number and number of the reinforcing bar crossing part and joint part to be folded increases, so the work efficiency is poor. A length that is not necessary for the bundling operation is generated in the portion of the bundling wire for the reinforcing bar projecting from the binding position.

The object of the present invention is to provide both ends of a binding wire for reinforcing bar construction as shown in FIG. 6 (A), in which a correction instruction is given by a designer after rebar assembly before placing concrete and a general contractor reinforcing bar assembly inspection. However, the same bundling operation can be performed by reducing the number of parts that fold out from the bundling position and the number of folds in the bounced part, and removing the parts that are not necessary for bundling the conventional binding wires for rebar construction. It is to provide a binding wire for reinforcing bars to maintain resource and save resources (cost reduction).

A binding wire for reinforcing bar construction according to the present invention for solving the above-mentioned problem is a binding wire for reinforcing bar construction for binding a crossover portion and a joint portion of a reinforcing bar arrangement when assembling the reinforcing bar, and the binding wire for reinforcing bar construction Is a reinforcing wire binding wire that folds an almost straight ultra-fine steel wire in half and fastens it using a hacker that is a binding tool. The other is formed in a stepped shape of 1/3 or more and 7/8 or less with respect to one length.

In addition, the binding wire for reinforcing bars is plated.

The binding wire for reinforcing bar construction of the present invention is used to bind a crossover portion and a joint portion when reinforcing bars are assembled during rebar assembly. While removing the unnecessary part and securing the length to maintain the bundling operability, the other is further shortened to make it a length that does not contact the formwork after rebar assembly, resulting in a stepped shape, It is the point which shortened the length of the conventional binding wire for reinforcing bars.

As a result, for example, the two portions of the conventional reinforcing bar binding wire shown in FIG. 6 (A) that protrude from the binding position need to be folded, but the reinforcing bar binding wire of the present invention is one side. Is short and does not come into contact with the formwork, and the other is shorter than the conventional binding wire for rebar construction, so the number of parts that fold out from the binding position and the number of folds in the protruding part are Compared to cable ties for construction, it is halved.

Therefore, according to the binding wire for reinforcing bar construction of the present invention, the number of ends and the number of the ends protruding from the binding position tightly bound by the conventional reinforcing wire binding wire are reduced, so that the portion contacting the mold is half. The work efficiency is improved by halving the number of folds and the number of parts that jump out from the binding position of the reinforcing bar crossing part in accordance with the correction instruction of the reinforcing bar assembly inspection by the designer and general contractor that is performed after the reinforcing bar is assembled. .

Moreover, since the total length of the ultra-fine steel wire used is shorter than the conventional binding wire for reinforcing bars construction, the cost can be reduced considerably from the viewpoint of productivity.

The top view which shows an example of embodiment of the binding wire for reinforcing bars construction by this invention. The figure which shows the binding wire for reinforcing bar construction which bundled the binding wire for reinforcing bar construction shown in FIG. It is an enlarged view of the part fastened by the binding wire for reinforcing bars shown in FIG. The top view which shows an example of embodiment of the binding wire for reinforcing bars used conventionally. The figure which shows the binding wire for reinforcing bar construction which bundled the binding wire for reinforcing bar construction shown in FIG. (A) It is an enlarged view of the part which the edge part of the binding wire for reinforcing bar construction of the part fastened with the binding wire for reinforcing bar construction shown in FIG. 4 protruded. (B) It is an enlarged view of the part which folded the part which the edge part of the binding wire for reinforcing bar construction jumped out of the part fastened with the binding wire for reinforcing steel work shown in FIG. The top view which shows the reinforcement assembly assembled using the binding wire for reinforcement construction shown in FIG.

Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a plan view showing an example of an embodiment of a binding wire for reinforcing bar construction according to the present invention. Reinforcing bar binding wire 1 is used to bind the crossing portion of reinforcing bars during rebar assembly, and the length L of 1B on one side is longer than the length L1 of 1A on the other side. Is formed.

For example, the binding wire 3 in FIG. 4 that is currently used to bind the crossing portions of reinforcing bars having a nominal diameter D13 mm between the reinforcing bars is 350 mm in total length of the ultrafine steel wire and is folded in two. The length of the legs at both ends is bent at a length of about 160 mm.

However, the binding wire diagram for reinforcing bar construction of the present invention is shown in FIG. 1 in order to maintain the bundling operability at the same level as that of the binding wire for reinforcing bar construction 3 in FIG. The length is about 140 mm, L1 is about 120 mm, and the total length of the ultrafine steel wire is 270 mm.

Further, the binding wire 3 for reinforcing bar construction in FIG. 4 has a large bent portion at the folding point folded in half, but the binding wire 1 for reinforcing bar construction in FIG. 1 has a feature that the bent portion at the folding point folded in two is reduced. With this, the overall length can be shortened.

On the other hand, the length L of 1B of the binding wire for reinforcing bar construction of the present invention should be about 140 mm or more in consideration of operability and binding properties. This is because if it is 140 mm or less, the operability will be lost and the cohesion will be unreasonable. In the present invention, the length L1 of the other 1A is 1/3 to 7/8 of the length L of the other 1B. If it becomes 1/3 or less, the operability of the hacker as a binding jig is impaired, and if it becomes 7/8 or more, the resource saving effect is reduced.

In FIG. 1, only one reinforcing wire binding wire 1 is shown, but actually, a plurality of reinforcing wire binding wires 1 configured as shown in FIG. 1 are bundled as shown in FIG. The reinforcing wire binding wire 1 is pulled out from the reinforcing wire binding wire 8 one by one and used.

FIG. 7 shows a reinforcing bar assembly 10 fastened using the reinforcing wire binding wire 1 shown in FIG. The reinforcing bar assembly 10 is formed by binding some of the crossing portions of the reinforcing bars 11 arranged so as to be orthogonal to each other vertically and horizontally by a reinforcing wire binding wire 1 shown in FIG.

The binding wire 1 for reinforcing bar construction is shown in FIG. 6B because one end of the binding wire 1 that has been tightly bound and jumped out is long as shown in FIG. 3, but the other is extremely short. In this way, the number of bent ends of the binding wire 3 for reinforcing bar construction shown in FIG. As a result, a correction instruction is issued in the rebar assembly bar arrangement inspection by the designer and the general contractor after rebar assembly, and the end portion that is bound and jumped out as shown in FIG. 6 (A) is shown in FIG. 6 (B). The work efficiency is improved by halving the number of points and the number of the inner parts.

As a result, the length of L1 is shortened from the length of L in FIG. 1 by using the binding wire 1 for reinforcing bar construction, so that the length unnecessary for the binding operation of L2 is eliminated. The total length of the ultra-fine steel wire used as the binding wire 1 can be shortened, and the rebar construction contractor who purchases and uses the binding wire for rebar construction due to cost reduction is shown in Fig. 4 Compared to purchasing and using No. 3, the cost will be reduced in terms of unit price.

DESCRIPTION OF SYMBOLS 1 Binding wire 1A for rebar construction of this invention Length part 1B minimum required for binding operation of the binding wire for rebar construction 1B Length part L for maintaining the binding operation of the binding wire for rebar construction of this invention 1B length L1 1A length L2 The length of the part excluding 1A from 1B

Claims (2)

Reinforcing bar binding wire for connecting the reinforcing bar crossover and joints when assembling the reinforcing bar, which is folded in half using a hacker as a binding jig and folded in half Reinforcing bar binding characterized in that one of the lengths is such that the crossing portion or joint portion of the reinforcing bar arrangement can be fastened, and the other is formed with a length of 1/3 or more and 7/8 or less with respect to one length. line. The binding wire for reinforcing bar construction according to claim 1, wherein the binding wire for reinforcing steel bar is plated.

Images