JPS5853883Y2 - Wire rod for reinforcing bar positioning - Google Patents

Description

[Detailed description of the invention] The present invention relates to an auxiliary member for positioning reinforcing bars for arranging each reinforcing bar at equal intervals when assembling reinforcing bars to form a reinforced concrete structure. This invention relates to a wire rod for positioning reinforcing bars which is bent to form reinforcing bar receiving grooves at appropriately equal intervals, and by fitting the reinforcing bars into the receiving grooves, the spacing between each reinforcing bar is maintained.

As shown in Fig. 1, the conventional general method of assembling reinforcing bars is to assemble vertical bars 31, 31... and horizontal bars 32, 32...
Point marks 33.33... are added at appropriate intervals in advance at the positions where ... are to be placed, and vertical stripes are placed in correspondence with the point marks 33.33... 31, 31... and transverse muscles 32, 32...
..., and furthermore, the intersection P of the same reinforcing bars 31 and 32
, P... were tied together with wire or the like to form a reinforcing bar assembly unit 30.

However, according to this conventional reinforcing bar assembly method, vertical bars 3
1, 31... and transverse muscles 32, 32...
Not only does it require considerable skill to accurately maintain the spacing and parallelism between the reinforcing bars (31, 32), but also the intersection P of the vertical bars 31 and horizontal bars 32 must be tied together with wire, etc. As a result, the efficiency of the installation work was poor and the cost of reinforcing steel work increased.

The present invention was made in order to solve or alleviate the above-mentioned problems when assembling reinforcing bars, and provides a wire rod for positioning reinforcing bars that can be assembled accurately and easily when assembling reinforcing bars. It is intended for that purpose.

Hereinafter, the reinforcing bar positioning wire rod of the present invention will be explained based on the embodiments shown in FIGS. 2 to 10.

As shown in FIGS. 2 and 3, the reinforcing bar positioning wire rod 1 of this embodiment is made by bending a long wire rod (branch wire) 5 having an appropriate thickness, and forming a continuous approximately U-shaped wire rod at appropriate equal intervals. A wire rod 2 with reinforcing bar receiving grooves 3, 3, . and a straight reinforcing wire 7 that runs along the entire length of the reinforcing reinforcing wire 2 in the longitudinal direction, and the reinforcing wire 7 follows the straight line of the reinforcing reinforcing wire 2. It is integrally fixed to the side portion of the portion 5a by spot welding 8, 8, . . . .

Note that the reinforcing wire rod 7 is fixed so as not to protrude above the straight portion 5a of the reinforcing wire rod 2.

Each of the reinforcing bar receiving grooves 3, 3, . The opening width S of the entrance portion 3C is set to be smaller than the diameter d of the reinforcing bar 11 used.

The width of the receiving groove 3 gradually increases from the entrance part 3C toward the inner part 3b, and the bottom part 3a is located at one part of the circumference of an imaginary circle E having the same diameter as the reinforcing bar 11 to be inserted into the receiving groove 3. It is formed in an arcuate shape that constitutes a section.

Although the opening width S of the receiving groove entrance portion 3C is smaller than the diameter of the reinforcing bar 11, when the reinforcing bar 11 is inserted into the receiving groove 3b, the folded portion 6 of the receiving groove 3 has elasticity. By press-fitting the reinforcing bars 11, the opening 3C can be easily opened.

Further, in the reinforcing bar receiving groove 3, a wire 5 is bent at a position close to an imaginary circle E that makes the bottom part 3a of the reinforcing bar a part of the circumference, and so as to protrude toward the inside of the reinforcing bar receiving groove 3. A chevron-shaped rebar retaining protrusion 4 is formed.

The reinforcing bar 11 fitted into the receiving groove 3 passes over the retaining protrusion 4 and is press-fitted into the inner part 3C of the receiving groove.

A U-shaped hook portion 9 is formed at one end of the reinforcing bar positioning wire 1 by folding each of the wires (the reinforcing bar receiving grooved wire 2 and the reinforcing wire 7) upward at the same position.

This hook portion 9 is for temporarily fixing the reinforcing bar positioning wire 1 to the reinforcing bar 11 with a band stopper 13 or the like when fixing the reinforcing bar positioning wire 1 to the reinforcing bar 11 as described later.

Next, the method of using the reinforcing bar positioning wire rod 1 having the above structure will be explained with reference to FIGS. It is fixed by spot welding 18, 18... and used as the reinforcing bar 10 with wire rod.

At that time, if the hook part 9 formed at one end of the reinforcing bar positioning wire 1 is aligned in advance near one end of the reinforcing bar 11, and the hook part 9 is temporarily fixed with a band stopper 13, the wire 1 The reinforcing bar receiving grooves 3, 3 of each reinforcing bar 10, 10, .

4 to 6 show a method of forming a reinforced concrete surface (for example, a base or a slab) using the reinforcing bars 10 with wire rods. An appropriate number of reinforcing bars 10 with wire rods (in this example, two at both ends) are placed at appropriate intervals.
．． 10... are respectively oriented in the A-B direction, and each reinforcing bar receiving groove 3, 3 of each reinforcing bar with wire rod 10.10 is facing in the C-B direction, so that the block stand 15.15
・・・・・・It is placed on top.

Next, there are reinforcing bar receiving grooves 3° 3 at mutually opposing positions in each of the reinforcing bars with wire rods 10 and 10 arranged as described above.
・Press-fit and hold another reinforcing bar with wire rod 10.10... in the C-B direction, and insert the reinforcing bar receiving grooves 3, 3 of the reinforcing bar with wire rod 10.10...・・・・・・
are arranged so that they are aligned on a straight line in the A-B direction.

In this example, reinforcing bars with wire rods 10, 10, etc., which are arranged in the C-B direction, are arranged every two, and ordinary reinforcing bars with wire rods 1 are not installed between them. reinforcing bar 1
1.11... are arranged.

Furthermore, as mentioned above, the upper part of the reinforcing bars with wire rods 10.10... is placed in the C-B direction.
Ordinary reinforcing bars Jl, 11...... are reinforcing bars with wire rods 10, 10..., extending in the C-B direction.
are press-fitted into the reinforcing bar receiving grooves 3, 3, . . . to form a lattice-shaped reinforcing bar assembly unit 20.

Note that the other reinforcing bars 10 (or reinforcing bars 11) with wire rods that are press-fitted into the reinforcing bar receiving grooves 3 of the reinforcing bars 10 with wire rods are inserted into the reinforcing bar receiving grooves 3 and 3, respectively.
The reinforcing bar 10 (or 11) press-fitted into the inner part 3b is received by the retaining protrusion 4 over the protrusion 4 of 3. It will not come out from the groove deep part 3b.

Figure 7 shows the method of fixing reinforcing bars at joints.
In the joint, two reinforcing bars 11,11 are inserted into one reinforcing bar receiving groove 3, as clearly shown in the figure.

Figures 8 and 9 show a method for assembling reinforcing bars for vertical walls of a concrete structure, and the reinforcing bar assembly unit 20 for vertical walls is also used for assembling reinforcing bars for horizontal surfaces as shown in Figures 5 and 6 above. Similar to unit 20, vertical and horizontal reinforcing bars 10.10
. . . (or 11, 11 . . .) are press-fitted into the reinforcing bar receiving grooves 3, 3, . . . and assembled in a lattice shape.

In this vertical wall reinforcing bar assembly unit 20, reinforcing bar receiving grooves 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, . A lashing wire 17 as shown in FIG. 10 is hooked to each of the reinforcing bar receiving grooves of the reinforcing bars 11 with wire rods.

That is, the horizontal reinforcing bars 10 (or 11
) is press-fitted, a lashing wire 17 is passed through the folded portion 6, and the lashing wire 17 is held and latched to the longitudinal reinforcing bar 10 with wire.

In the reinforcing bar assembly unit 20 for vertical walls, a worker may stand on the horizontal reinforcing bars 10 (or 11) like a scaffold, and at that time, the reinforcing bars that receive the horizontal reinforcing bars 10 (or 11) This is to prevent the receiving grooves 3, 3... from expanding outward.

The reinforcing bar positioning wire 1 of the present invention can be used not only on horizontal surfaces or vertical wall surfaces as described above, but also when assembling reinforcing bars on reinforced concrete 1 in a wide range of structures such as bridges and tunnels.

Next, to explain the effects of the present invention, according to the reinforcing bar positioning wire 1 of the present invention, (1) reinforcing bar receiving grooves 3, 3... are formed at appropriate equal intervals, so that reinforcing bars If the reinforcing bars 10 with wire rods to which the wire rods 1 are fixed are used during assembly, the vertical and horizontal reinforcing bars can be positioned accurately and quickly by the simple operation of inserting the horizontal reinforcing bars 11 into the reinforcing bar receiving grooves 3 of the reinforcing bars 10 with wire rods. (2) There is a reinforcing bar in the reinforcing bar receiving groove 3 to prevent the reinforcing bar from slipping out. Since the projections 4 are formed, the reinforcing bars 11 fitted into the reinforcing bar receiving grooves 3 will not come out of the reinforcing bar receiving grooves 3, and there is no need to repair the assembled reinforcing bars. (3) Wire material with reinforcing bar training 2 Since the reinforcing wire rod 7 is fixed along the positioning wire rod 1, the positioning wire rod 1 will not be stretched by external force, and the appropriate length and spacing between reinforcing bar receiving grooves can be maintained at all times.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of a conventional reinforcing bar assembly method, Fig. 2 is a perspective view of a reinforcing bar positioning wire according to an embodiment of the present invention, and Fig. 3 is an explanatory diagram showing a method of using the reinforcing bar positioning wire of Fig. 2. ,
Fig. 4 is an explanatory diagram of a reinforcing bar assembly method using the reinforcing bar positioning wire shown in Fig. 2, Fig. 5 is a partially enlarged view of Fig. 4, Fig. 6 is a VIVI sectional view of Fig. 5, and Fig. 7 is a joint Fig. 8 is an explanatory diagram of another method of assembling reinforcing bars using the reinforcing bar positioning wire shown in Fig. 2, Fig. 9 is a partially enlarged view of Fig. FIG. 3 is a perspective view of a lashing wire used in the reinforcing bar assembly method shown in the figure. 1... Wire rod for reinforcing bar positioning, 2... Wire rod with reinforcing bar training, 3...... Reinforcing bar receiving groove, 3a...
... bottom of receiving groove, 3b... deep part of receiving groove, 3C...
...Entrance of receiving groove, 4...Protrusion for preventing removal of reinforcing bar,
5... Line, 6... Turning section, 7...
...Reinforcement wire rod, 10...Reinforcement bar with wire rod, 1
1...Reinforcement bar, 20...Reinforcement assembly unit.

Claims (1)

[Claims for Utility Model Registration] A substantially U-shaped reinforcing bar receiving groove 3.3 having a substantially arc-shaped bottom 3a formed by bending a long wire 5 at appropriate equal intervals.
- and the straight line portion 5a connecting each reinforcing bar receiving groove 3, 3. 5a... and the reinforcing bar receiving grooves 3, 3...
. . have reinforcing bar slip-out prevention protrusions 4, 4, which are protruded toward the inside of the reinforcing bar receiving groove 3 at a position close to an imaginary circle E whose bottom portion 3a is part of the circumference. ...
・ constitutes the reinforcing bar receiving grooved wire 2, and the straight portions 5 a , 5 a .
A reinforcing bar positioning wire material, characterized in that a reinforcing wire material 7 for preventing elongation is fixed along the reinforcing wire material 7.