JPH04143350A - Semi-prefabricated reinforcement for beam stirrup and arranging method of beam reinforcement therewith - Google Patents

Abstract

PURPOSE:To improve workability by welding both ends of U-like semi-stirrup reinforcement arranged in parallel to beam main reinforcement alternates to form a prefabricated reinforcement, and arranging upper and lower beam main reinforcements and the like and placing concrete. CONSTITUTION:U-like semi stirrup reinforcements 1 are arranged in parallel, both ends of it are welded to beam main reinforcement alternates 2, and a semi-prefabricated reinforcement A for a beam stirrup is formed. Further, beam lower end main reinforcements 4, upper end main reinforcements 6, an upper side stirrup 5, and a slab reinforcement 7 are arranged, a beam formwork 3 is provided, and concrete is placed. Hereby, execution efficiency can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a prefabricated reinforcing bar for beam stirrups and a method for arranging beam reinforcing bars using the same.

[Prior art] Conventional beam reinforcement arrangement involves placing a head-shaped or spiral-shaped stirrup in the beam formwork, inserting the main beam reinforcement into the stirrup, and then adjusting the stirrup as appropriate. They were assembled using binding wires while placing reinforcement at intervals.

[Problem to be Solved by the Invention 1] Therefore, the above-mentioned conventional beam reinforcements have five problems, such as poor reinforcement arrangement accuracy such as spacing between stirrups, and time-consuming assembly and reinforcement work for beam main reinforcements. there were.

The present invention has been made in order to solve the above-mentioned conventional problems, and its purpose is to provide semi-prefabricated reinforcing bars for beam stirrups with high reinforcement accuracy and workability, and reinforcement of beam bars using the semi-prefabricated reinforcing bars for beam stirrups. The purpose is to provide a method.

[Means for Solving Problem N] The semi-prefabricated reinforcing bars for beam stirrups of the present invention include a large number of U-shaped half stirrup bars arranged in parallel, and both ends of these half stirrup bars are each integrated. It is characterized by being constructed from beam main reinforcement and substitute reinforcement which are welded together.

The tip end surface or side surface of the end of the U-shaped half stirrup reinforcement is welded to and integrated with the alternative reinforcement of the beam main reinforcement.

Round steel, deformed reinforcing bars, plates, etc. are used as the above-mentioned beam main reinforcement reinforcement.

In addition, the method for arranging beam reinforcement using prefabricated reinforcing bars for beam stirrups of the present invention is to set semi-prefabricated reinforcing bars for beam stirrups in a beam form, and to arrange beam main reinforcement inside the prefabricated reinforcing bars for beam stirrups. , is characterized in that the stirrups on the upper side are hooked orthogonally to the beam main reinforcement substitute reinforcements.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

Fig. 1 shows an embodiment of a semi-prefabricated reinforcing bar A for beam stirrup according to the present invention, in which a large number of U-shaped half stirrup bars 1 and two beam main bar substitutes H2 are integrally welded. It is configured.

The large number of U-shaped half stirrup strips 1 are arranged in parallel at predetermined intervals. The tip surfaces of both ends of the U-shaped half stirrup reinforcement 1 are welded to the side surfaces of the beam main reinforcement substitute reinforcement 2, respectively.

Next, a method of arranging beam reinforcement using the above-mentioned prefabricated reinforcing bars will be explained.

First, as shown in FIG. 2, the semi-prefabricated reinforcing bars A are set inside the beam formwork 3.

Next, as shown in FIG. 3, the beam lower end main reinforcing bars 4 are arranged within the prefabricated beef reinforcing bars A and fixed with binding wires or the like.

Subsequently, as shown in FIG. 4, stirrups 5 on the upper side are attached to the beam main reinforcement substitute reinforcement 2 of the semi-prefabricated reinforcing bars A.

At this time, since both ends of the stirrup 5 are formed into a hook shape, they are attached to the beam main reinforcement substitute reinforcement 2 so as to be hooked thereto.

The main reinforcement 6 at the upper end of the beam may be placed inside the semi-prefabricated reinforcing bar A before attaching the stirrup 5 on the upper side, and then fixed to it with a binding wire or the like after the stirrup 5 is attached, or The stirrup 5 is attached to the semi-prefabricated reinforcing bar A after the wrap 5 and the main reinforcement 6 at the upper end of the beam are assembled in advance.

7 is a slab line.

FIG. 5(A) shows another embodiment in which a substitute beam main reinforcement reinforcement 2' is welded to the side surface of the end of the U-shaped semi-stirrup reinforcement 1, and FIG. Still another embodiment is shown in which a plate 2'' is welded instead of a deformed reinforcing bar.

Note that the prefabricated reinforcing bars A for beam stirrup of the present invention can also be arranged around a steel beam erected at a construction site.

[Effects of the Invention 1 (1) Since the U-shaped semi-stirrup reinforcement is integrally welded to the beam main reinforcement substitute reinforcement, the reinforcement accuracy of the half-stirrup reinforcement can be improved.

(2) The prefabricated reinforcing bars for beam stirrups are formed into a F-shaped plate as a whole, so they are light and easy to transport, and the beam main reinforcements are easy to arrange, resulting in good workability.

(3) Beam main reinforcement substitute reinforcement can also be used as main reinforcement.

(4) Can be used for members such as SRC construction and SC construction.

[Brief explanation of the drawing]

Figure 11 is a perspective view showing one embodiment of the semi-prefabricated reinforcing bars for beam stirrups of the present invention, Figures 2 to 4 are explanatory diagrams sequentially showing a reinforcement method for beam reinforcement using semi-prefabricated reinforcing bars for beam stirrups, 5(A) and 5(B) are explanatory diagrams each showing another example of the beam main reinforcement substitute reinforcement. 1... U-shaped half stirrup bar, 2, 2'... Beam main reinforcement reinforcement, 2''... Plate, 3... Beam formwork, 4.
... Beam bottom end main reinforcement, 5... Beam top end main reinforcement, 6... Top stirrer 7, 7... Slab reinforcing bar, A... Beef prefabricated reinforcing bar for beam stirrup. Patent applicant: Tokyu Construction Co., Ltd., Takkyu Koken Co., Ltd. Agent: Patent attorney: Seishibu Suzuki

Claims (1)

[Claims] 1. A large number of U-shaped semi-stirrup reinforcements arranged in parallel;
A semi-prefabricated reinforcing bar for a beam stirrup, characterized in that it is composed of beam main reinforcement substitute reinforcements in which both ends of these half stirrup reinforcements are integrally welded. 2. The semi-prefabricated reinforcing bar for beam stirrup according to claim 1, wherein the tip end surface of the end of the U-shaped half stirrup bar is welded to the beam main bar substitute bar. 3. The semi-prefabricated reinforcing bar for beam stirrup according to claim 1, wherein the side surface of the end of the U-shaped half stirrup bar is welded to the beam main bar substitute bar. 4. After setting the semi-prefabricated reinforcing bars for beam stirrups according to claims 1 to 3 in the beam formwork and arranging the beam main reinforcement within the semi-prefabricated reinforcing bars, the upper stirrup is replaced with beam main reinforcement substitute reinforcement. A method for arranging beam reinforcement using semi-prefabricated reinforcing bars for beam stirrups, which is characterized by arranging the reinforcement by hooking it orthogonal to the beam stirrup.