JPH10140837A - Reinforcement end processing structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable beam reinforcement to be easily and efficiently assembled without requiring bending work. SOLUTION: An anchor plate 11 provided with through holes 12 at its end is mounted at the ends of beam-upper main reinforcement 2 and beam-under main reinforcement 3 by means of the through holes 12, and an enlarged part 13 is provided at the end of each main reinforcement 2, 3 to lock the anchor plate 11 into place, so that the anchoring effect of the anchor plate 11 for the end of each main reinforcement 2, 3 can be produced by burying the anchor plate 11 in concrete.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an end treatment structure for a reinforcing bar, and more particularly to an end treatment structure for performing an anchor treatment on an end of a beam arrangement.

[0002]

2. Description of the Related Art FIGS. 4A and 4B show a structure of a conventional beam arrangement for constructing a beam 1. A main bar 2 above the beam and a main bar 3 below the beam.
Stirrups 4 are wound around the circumference of the body at regular intervals in the length direction.
Depending on the size of the beam 1, an abdominal muscle and a width stop are used in combination with these, and the ends of the upper beam 2 and the lower beam 3 that face the column 5 become an anchor portion 6 bent downward. ing.

[0003]

The bending of the anchor portion 6 at the end of each of the main bars 2 and 3 requires a large-sized facility, requires a lot of time and labor, and reduces the processing cost. There is a problem of being expensive.

[0004] Therefore, an object of the present invention is to make it possible to extremely easily treat an anchor portion provided at the end of a beam arrangement, greatly reduce the assembling of the beam arrangement, improve efficiency, and reduce operating costs. An object of the present invention is to provide an end treatment structure of a reinforcing bar that enables reduction.

[0005]

In order to solve the above-mentioned problems, according to the first aspect of the present invention, an insertion hole for a reinforcing bar is provided at an end of an anchor plate, and an insertion hole is inserted at an end of the reinforcing bar. An arrangement is adopted in which an anchor plate is mounted and an enlarged diameter portion is provided at an end of the reinforcing bar to prevent the anchor plate from coming off.

According to a second aspect of the present invention, in the first aspect, the anchor plate is formed by using a vertically long rectangular flat plate.

According to a third aspect of the present invention, in the first aspect of the present invention, the anchor plate is formed by using a vertically long rectangular corrugated plate.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the anchor plate uses a rectangular metal plate that is long vertically and the lower portion of the metal plate is divided into a plurality of parts by slits, and both sides sandwiching the slits. This adopts a configuration formed by being bent in opposite directions.

[0009] The anchor plate can be inserted into the reinforcing bar by inserting a through-hole into the reinforcing bar and then processing an enlarged diameter portion at the end of the reinforcing bar on site, so that the anchor plate can be attached to the reinforcing bar in a retaining shape. Demonstrate the function of an anchor.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an end processing structure in which an anchor portion is formed at the end of the main bar in the beam arrangement of the beam 1, and a stirrup 4 is provided on the outer periphery of the main bar 2 at the top of the beam and the main bar 3 at the bottom of the beam. An anchor plate 11 is attached to the ends of the main bars 2 and 3 facing the column 5 while being wound at regular intervals in the length direction.

Anchor plate 1 for both main rebars 2 and 3
After the insertion of the insertion hole 12 provided at the end of the anchor plate 11 into the end of the main reinforcements 2, 3, the attachment of the main reinforcement 2,
3 is processed into an enlarged diameter portion 13 at the end thereof, and the anchor plate 11
Has a retaining shape.

The above-mentioned anchor plate 11 can adopt various shapes and structures. The anchor plate 11 in the example shown in FIG. 1 uses a vertically long rectangular metal plate.
The figure shows a case where an insertion hole 12 is provided at the upper end, and a case where the lower end of the anchor plate 11 is bent at a right angle to form a bent piece 14.

An anchor plate 11 shown in FIG.
Is a vertically long rectangle, which is provided with a plurality of through-holes 15 from the middle to the lower end to improve the bonding strength with concrete. The anchor plate 11 in FIG.
The lower end shown in FIG. 1 is bent to form a bent piece 14, and the anchor plate 11 in FIG. 2 (C) uses a metal corrugated plate.

The anchor plate 11 shown in FIGS. 3 (A) and 3 (B) is provided with a slit at the lower part of a rectangular plate which is long in the vertical direction so as to be bifurcated. A)) or in the width direction (FIG. 3 (B)),
This is to improve the anchor efficiency.

Next, in order to perform the end processing of the reinforcing bar using the anchor plate, the anchor plate 1 is attached to the end of the main bar 2 at the upper part of the beam and the end of the main bar 3 at the lower part of the beam to be incorporated in the formwork of the beam 1.
1 is attached by inserting the insertion hole 12 into each of the main reinforcements 2 and 3, and thereafter, an enlarged diameter portion 13 having a diameter larger than that of the insertion hole 12 is press-formed at the end of each of the main reinforcements 2 and 3 by pressing or the like. The anchor plate 11 has a retaining shape.

As described above, the upper main beam 2 and the lower main beam 3 under the beam, in which the anchor plate 11 is attached at right angles to the ends in a retaining manner, are arranged in the beam formwork. Concrete is cast into the beam formwork from inside the column form with the stirrups 4 wound around the outer periphery, and the main bars 2, 3 and the anchor plate 11 are buried in the concrete. The beam 1 can be constructed, and the anchor plate 11 attached to both the main reinforcements 2 and 3 so as to be in a retaining shape is provided.
The anchor effect will be exerted at the end of No. 3.

[0018]

As described above, according to the present invention, the anchor plate is attached to the end of the reinforcing bar by the insertion hole provided at the end, and the enlarged diameter portion for preventing the anchor plate from coming off at the end of the reinforcing bar. Since it was provided, simply by attaching an anchor plate to the end of the reinforcing bar and pressing the enlarged diameter part, it is possible to obtain an anchor effect of the same strength as the reinforcing bar at the end of the reinforcing bar. This eliminates the need for on-site bending of main bars, and shortens the construction period of beam arrangement, thereby reducing building construction costs.

[Brief description of the drawings]

FIG. 1 is a front view of a beam arrangement using an end treatment structure.

FIGS. 2A to 2C are perspective views showing different examples of an anchor plate.

3A and 3B are perspective views showing different examples of an anchor plate.

FIG. 4 (A) is a front view showing a conventional beam arrangement, and FIG. 4 (B) is a side view thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Beam 2 Main beam upper bar 3 Beam lower main bar 4 Stirrup 5 Column 11 Anchor plate 12 Insertion hole 13 Large diameter part

Claims (4)

[Claims] 1. An enlarged diameter portion in which an insertion hole for a reinforcing bar is provided at an end portion of an anchor plate, an insertion hole is inserted into an end portion of the reinforcing bar, an anchor plate is attached, and an anchor plate is prevented from being removed at the end portion of the reinforcing bar. An end treatment structure for a reinforcing bar, characterized by having a rib. 2. The end treatment structure for a reinforcing bar according to claim 1, wherein the anchor plate is formed using a rectangular plate that is long vertically. 3. The end treatment structure for a reinforcing bar according to claim 1, wherein the anchor plate is formed using a rectangular corrugated plate that is long vertically. 4. The anchor plate is formed by using a rectangular metal plate that is long vertically and dividing the lower part of the metal plate into a plurality of parts by slits and bending both sides sandwiching the slits in opposite directions. Item 2. An end treatment structure for a reinforcing bar according to Item 1.