JPH0647858B2 - 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 through-holes of RC or SRC beams of the present invention is wound around at least one round or more, and both end parts thereof are bent inward to form an outer ring reinforcing bar, and the outer ring reinforcing bar. The inner ring has a diameter smaller than the winding diameter of at least one turn, and both ends are bent outward to form a branch bar, and an outer ring bar and an inner ring composed of these high-strength reinforcing bars. And a metal caulking member that integrally joins the intersection with the muscle, and an arbitrary number of intermediate rings between the outer ring muscle and the inner ring muscle. It is characterized by arranging muscles.

[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 wound with a high-strength reinforcing bar in a loop shape, which is wound about one and a half rounds, and both ends thereof are branched bar 1a bent inward. .

Reference numeral 2 denotes an inner ring reinforcement wound to a diameter smaller than that of the outer ring reinforcement 1, and is wound about one and a half turns like the outer ring reinforcement 1, and both ends thereof are bent outward. It has become the aortic branch 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, the respective branch muscles 1a and 2a are preferably oriented radially in directions orthogonal to each other.

In the above embodiment, the inner and outer double ring muscles are used, but the present invention is not limited to this.
As shown in FIGS. 2 and 3, an arbitrary number of intermediate ring muscles 4 can be concentrically arranged between the outer ring muscles 1 and the inner ring muscles 2.

When the ring muscles are concentrically multiplexed as described above, the branch muscles of the ring muscles located on the outer side are bent inward,
The branch muscles of the ring muscles located on the inner side should be bent outward.

In addition, when the ring muscles are superposed, it is preferable that the branch muscles are evenly oriented while keeping balance in the radial direction.

Further, in the above embodiment, the ring muscle is wound for one and a half rounds, but the present invention is not limited to this, and for example, the fourth
As shown in FIGS. (A) and (B), one round and 3/4 round, one round and 1/4 round, etc., may be wound, that is, at least one round or more may be wound.

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 reinforcement are bent inward, and both ends of the small-diameter inner ring reinforcement are bent outward, the branch muscles are formed, so that the inner and outer rings are formed. The intersection can be easily constructed simply by overlapping the lines. 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, FIGS. 2 to 4 are explanatory views showing another embodiment, and FIGS. 5 (A) and (B) are conventional drawings. It is a perspective view which shows the attachment state of a reinforcement bar. 1 ... Outer ring muscle, 1a ... Branch muscle, 2 ... Inner ring muscle, 2a
... branches, 3 ... caulking members, 4 ... intermediate ring muscles.

Claims (2)

[Claims] 1. A high-strength reinforcing bar is wound at least one round or more, and both ends are bent inward to form an outer ring bar, and a high-strength reinforcing bar is wound from the winding diameter of the outer ring bar. Inner ring muscles that have a small diameter and are wound at least one turn, and both ends of which are bent outwardly to form branch muscles, and the intersections of these outer ring muscles and inner ring muscles are integrally connected. RC characterized by comprising a metallic caulking member
Or, a reinforcing bar for through holes of SRC beams. 2. An outer ring rebar having a high strength rebar wound at least once or more and bent at both ends inward to form a branch bar, and a high strength rebar is wound from a winding diameter of the outer ring rebar. It has a small diameter and is wound at least one round or more, and its both ends are bent outwards to form an internal ring muscle, and an arbitrary number of elements arranged between the overlapped outer ring muscle and inner ring muscle. An intermediate ring muscle, and a caulking member made of metal that integrally joins the intersections of these outer ring muscle, inner ring muscle, and intermediate ring muscle,
A reinforcing bar for through-holes of RC or SRC beams, which is characterized by comprising: