JP2996795B2 - How to assemble underground beams - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of assembling a mesh side reinforcement of an underground beam.

[0002]

2. Description of the Related Art The stirrup mesh method for underground beams is a fairly generalized method.
The size of the mesh is based on the size and weight that can be handled by two or three reinforcers. In addition, temporary studs, such as ground scaffolds, were temporarily attached to the mesh bars.

[0003]

However, the conventional method has a problem in terms of efficiency because a large mesh bar is attached to one sheet, and has a problem in terms of efficiency. In addition, the state at the time of attachment to the lower cage bar of the pressure-resistant panel is unstable, and This requires a temporary work to perform the operation, which increases the holding time by the heavy equipment, and has problems in terms of workability and economy.

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned problems of the prior art, and an object of the present invention is to provide a method of assembling a super-large underground beam reinforcing bar having improved workability and excellent economic efficiency. The point is to provide.

[0005]

In order to achieve the above object, according to the method of assembling an underground beam reinforcing bar according to the present invention, a width stop bar is attached to the head of one of the left and right underground beam mesh side bars. After that, the two underground beam mesh side bars are suspended, and the lower portions of the center beam mesh bars are bound at the rising portions of the lower cage bars buried in the pressure panel, and then the main bars are placed on the width stopping bars. It is mounted.

[0006]

According to the present invention, as described above, two side bars of the underground beam mesh are laid at the site at a time, and a width stop is attached to the top of the two side bars of the underground beam mesh. Using a width stop, one pair of the underground beam mesh side rebars are simultaneously suspended by heavy equipment up to the rising part of the lower ground beam embedded in the pressure panel, and the lower part of the underground beam mesh side rebar at the same rising part. By tying, the underground beam mesh side stitches become independent by being tied at the feet, so that safety is large and temporary work is unnecessary, and the holding time by heavy equipment is reduced.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. A mesh side reinforcement is adopted as a stirrup of a large underground beam, two sheets are assembled in advance at a site, and a width stop bar 2 is temporarily fixed to the head of the middle beam mesh side reinforcement 1 at each site by welding w.

Next, the lifting device is lifted up through a lifting cable 3 of a heavy equipment (not shown) through the same width retaining bar 2, and bound to a rising portion of a lower cage bar 5 buried in a pressure-resistant panel 4 via a binding wire 6. I do. As described above, the work efficiency is improved because the two mesh side bars 1 are attached at the same time, and the mesh side bars 1 are self-supported by being bound by the feet at the time of the installation, so that the temporary work becomes unnecessary, and at the same time holding the heavy equipment Time is reduced.

The underground beam mesh side reinforcement can also be prefabricated for one span by laying in the longitudinal direction, and the end hook can be machined to reduce the length of the joint. Can be shortened. After binding the lower part of the underground beam mesh bar in this way, the main bar 7 is arranged on the width stopping bar 2. In the figure, reference numeral 8 denotes a cap tie.

[0010]

According to the present invention, as described above, since one pair of left and right underground beam mesh side reinforcements can be attached at the same time, the work efficiency is remarkably improved. Since it is tied to the rising part of the lower cage bar buried in the pressure board, it becomes self-supporting, safety is increased, and temporary work for building mesh mesh is unnecessary,
It is possible to reduce the heavy equipment holding time.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a step of suspending an underground beam mesh bar in an embodiment of an assembling method of an underground beam reinforcing bar according to the present invention.

FIG. 2 is a longitudinal sectional view showing a binding step of the mesh bars to a lower cage piece of a pressure plate.

FIG. 3 is a perspective view showing a ground setting process of an underground beam mesh bar.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Underground beam mesh side reinforcement 2 Width stop 3 Lifting cable 4 Pressure plate 5 Lower cage 6 Binding wire 7 Main reinforcement 8 Cap tie

Continuation of the front page (72) Inventor: Satoshi Mizuno 1-25-1 Nishi Shinjuku, Shinjuku-ku, Tokyo Taisei Corporation (58) Field surveyed (Int. Cl. ⁷ , DB name) E04G 21/12 105 E04C 5/06 E02D 27/00 E02D 27/01

Claims (1)

(57) [Claims] 1. A pair of left and right underground beam mesh side bars are provided with a width-retaining bar at the head thereof, and then the pair of underground beam mesh side bars are suspended, and the lower cage bars embedded in the pressure-resistant panel rise. A method of assembling an underground beam reinforcing bar, comprising: binding a lower portion of each of the above-mentioned underground beam mesh bars to a portion, and mounting a main bar on the width stopping bar.