JPH0647859B2 - Reinforcing reinforcement for through-holes of RC or SRC beams - Google Patents

Description

TECHNICAL FIELD The present invention relates to a reinforcing bar for through holes of RC or SRC beams.

[Prior Art and its Problems] FIG. 5 shows a conventional reinforcing bar for beam through holes of this type.
As shown in (A) and (B), the ring muscles 5 are arranged concentrically.
And a branch muscle 6 which is radially arranged so as to intersect with the ring muscle 5 has been developed.

However, in the above-mentioned conventional reinforcing bar, since the ring bar is butt welded and the ring bar and the branch bar are spot welded at the intersections thereof, the reinforcing bar is affected by heat by these weldings, and high strength is obtained. There was a problem that it could not be applied to rebar.

[Object of the Invention] The present invention has been made in order to solve the above-mentioned conventional problems, and an object of the present invention is to solve the above-mentioned weak points due to welding, to provide a high-strength RC which is easy to construct. Or SR
It is to provide a reinforcing bar for a through hole of a C beam.

[Structure of the Invention] The reinforcing reinforcing bar for a through hole of an RC or SRC beam of the present invention is wound around at least one round or more, and its both ends are extended in a tangential direction to form an outer ring bar, and the outer ring. Inner ring muscles that are wound at least one turn with a diameter smaller than the winding diameter of the muscles, and extend both ends in the tangential direction to form the branch muscles, and the outer ring muscles and inner ring consisting of these high strength reinforcing bars It is characterized by comprising a metal caulking member that integrally joins the intersecting portion with the muscle, and an arbitrary number of intermediate ring muscles between the stacked outer ring muscles and inner ring muscles. It is characterized by being arranged.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes an outer ring bar formed by winding a high-strength reinforcing bar in an annular shape, and both ends thereof are tangentially extended to form a branch bar 1a.

Reference numeral 2 denotes an inner ring reinforcement wound around a diameter smaller than the diameter of the outer ring reinforcement 1 and is wound once like the outer ring reinforcement 1, and both ends thereof are also extended in the tangential direction. Branch muscle
2a.

The outer ring muscle 1 and the inner ring muscle 2 are concentrically overlapped with each other, and the respective intersecting portions are integrally and firmly joined by crimping a metallic crimp member 3.

As is clear from FIG. 1, each of the above ring muscles 1, 2
At the time of overlapping, it is preferable that the branch muscles 1a and 2a are arranged in a well-balanced manner. Further, the inner and outer ring muscles 1 and 2 may be connected to each other by a connecting member 3'made of plastic or the like so as to maintain a constant shape.

In the above embodiment, the inner and outer double ring muscles 1 and 2 are used, but the present invention is not limited to this. For example, as shown in FIGS. An arbitrary number of intermediate ring muscles 4 can be arranged between 1 and the inner ring muscles 2. Also in this case, it is preferable to arrange the branch muscles 1a, 2a, 4a so as to be distributed in a well-balanced manner.

FIG. 3 shows another embodiment of the present invention, in which each branch muscle 1a, 2
a and 4a are oriented in directions orthogonal to each other. As described above, in the present invention, the branch muscles are not limited to being oriented parallel to each other, but may be oriented orthogonally or in a direction intersecting at an appropriate angle.

Further, as shown in FIG. 4, the ring muscles 1 may be wound one round or more, and then the branch muscles 1a may be extended in the tangential direction so as to be superposed on each other.

In the present invention, the ring muscles do not necessarily have to be concentrically stacked.

[Effects of the Invention] 1) Since both ends of the large-diameter outer ring muscle are tangentially extended, and both ends of the small-diameter inner ring muscle are also tangentially extended to form branch muscles, respectively. The intersection can be easily configured simply by overlapping the inner and outer ring muscles. Therefore, a special bar member for connecting the inner and outer rings to each other is not required, and the number of parts can be reduced.

2) Since the crossing portion of the outer ring reinforcement and the inner ring reinforcement is integrally joined by a caulking member made of metal to form a reinforcing rebar for the through hole of the RC or SRC beam, a high-strength rebar is used as a material. It is not necessary to weld the intersection of the inner and outer ring reinforcements, and they can be integrally and firmly joined while maintaining high strength. As a result, the transportation of reinforcing reinforcing bars for through holes as reinforcing bar products and beam reinforcing bars. It will be easy to assemble on-site equipment.

[Brief description of drawings]

FIG. 1 is an exploded perspective view and an assembly view showing an embodiment of a reinforcing bar of the present invention, and FIGS. 2 (A) and (B) are explanatory views showing another embodiment,
FIG. 3 and FIG. 4 are explanatory views showing different embodiments, and FIGS. 5 (A) and 5 (B) are perspective views showing a mounting state of a conventional reinforcing bar. 1 ... Outer ring muscle, 1a ... Branch muscle, 2 ... Inner ring muscle, 2a
... branches, 3 ... caulking members, 3 '... connecting material, 4 ...
Intermediate ring muscle, 4a ... branch muscle.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tomoyuki Iwakura 2-18-14 Takaido Nishi, Suginami-ku, Tokyo (72) Inventor Tetsumitsu Oikawa 1573-7 Nakata-cho, Izumi-ku, Yokohama-shi, Kanagawa (56) References Actual Kaisho 53-153318 (JP, U)

Claims (2)

[Claims] 1. A high-strength reinforcing bar is wound at least once or more, and both ends thereof are tangentially extended to form a branch bar, and a high-strength reinforcing bar is wound around the outer ring bar. Inner ring muscles that have a smaller diameter and are wound at least one round or more, and both ends of which extend tangentially to form branch muscles, and the intersections of these outer ring muscles and inner ring muscles are integrated. A reinforcing bar for a through hole of an RC or SRC beam, comprising a metallic caulking member to be joined. 2. An outer ring rebar having a high strength rebar wound at least one round or more and having both ends thereof tangentially extended to form a branch bar, and a high strength rebar having a winding diameter of the outer ring rebar. An inner ring muscle that has a smaller diameter and is wound at least one round or more, and both ends of which are tangentially extended to form a branch muscle, and an arbitrary outer ring muscle and an inner ring muscle that are arranged between them. RC or SRC beam comprising a number of intermediate ring reinforcements and a metallic caulking member that integrally connects intersections of these outer ring reinforcements, inner ring reinforcements, and intermediate ring reinforcements Reinforcing bar for through-holes.