JPH06136881A - Split type previously assembled beam reinforcement and method of assembling construction of split type previously assembled beam reinforcement - Google Patents

Abstract

PURPOSE:To contrive labor saving in work by combining an upper-side beam reinforcement, in which a stirrup is incorporated to a beam upper-end reinforcement, and a lower-side beam reinforcement, in which the stirrup is assembled to a beam lower-end reinforcement, up and down and assembling an integral beam reinforcement. CONSTITUTION:A previously assembled lower-side beam reinforcement 4 is suspended and incorporated to joint reinforcements 1a in the column head section of a column 1, and a complete type beam reinforcement 5 is hung up and crossed with the lower- side beam reinforcement 4. An upper-side beam reinforcement 3 is incorporated from the upper side of the lower-side beam reinforcement 4, and the lower side of the stirrup 3b of the upper-side beam reinforcement 3 is assembled to the auxiliary reinforcement 4d of the lower-side beam reinforcement 4. Auxiliary reinforcements 3d at the intermediate stage of the upper-side beam reinforcement 3 are abutted against the upper side of the stirrup 4b of the lower-side beam reinforcement 4, and unidirectional beam reinforcements 2 are built up, thus forming a crossed beam. Accordingly, the arrangement of bar of the crossed beam is enabled even on a narrow site, thus shortening a construction period.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a split type pre-assembled beam rebar and a split type pre-assembled beam rebar assembling method capable of arranging cross beams by the pre-assembled method even in a small site.

[0002]

2. Description of the Related Art In recent years, there has been a marked shortage of reinforcing bar work in the construction of reinforcing bars. In response to this, there are many prefabricated reinforcing bar construction methods that can replace the conventional place-assembled rebar and save labor and shorten the construction period. It has been adopted. However,
In the case of cross beams, D-shaped beams, L-shaped beams, or large beams and small beams where the beams intersect, if the site of the site is wide, these beam reinforcements can be assembled in advance, but the site is small. In this case, the beam rebars in one direction can be assembled first, but the beam rebars in the other direction intersecting with the beam rebar must be assembled inefficiently.

[0003]

SUMMARY OF THE INVENTION In view of the above problems, the present invention has been made to solve the problems, and it is possible to efficiently arrange cross beams by the pre-assembled reinforcing bar construction method even in a small site. It is an object of the present invention to provide a split type pre-assembled beam reinforcing bar and a split type pre-assembled beam reinforcing bar assembling method.

[0004]

In order to achieve the above object, the present invention comprises a beam reinforcing bar, an upper beam reinforcing bar having a stirrup attached to a beam upper beam, and a stirrup attached to a beam lower beam. Split type pre-assembled beam rebar, which is divided into lower beam rebar and assembled first,
And, the beam rebar is divided into an upper beam rebar having a stirrup attached to the beam upper beam and a lower beam rebar having a stirrup attached to the beam lower beam to be pre-assembled. And a lower beam rebar are combined vertically to assemble an integrated beam rebar.

[0005]

Therefore, according to the present invention, when the reinforcing bars of the cross-shaped beam are assembled first, the reinforcing bars of one direction are divided into the upper beam reinforcing bars and the lower beam reinforcing bars without first assembling the reinforcing bars in the integral intersecting shape. , The prefabricated reinforcing bar method of the crossed beam is possible even in a small site because the completed beam of the crossed beam and the rebar of the beam are separately preassembled and assembled to the crossed beam.

[0006]

The present invention will be described below in detail with reference to the illustrated embodiments. The embodiment is an example in which the present invention is applied to a cross beam. In FIGS. 1, 2, and 3, 1 is a reinforced concrete column constructed on the lower floor, and 1a is a joint of the column 1 extended to the upper floor. Reinforcing bars 3, 3 are upper beam reinforcing bars of the unidirectional beam reinforcing bar 4, 4 are lower beam reinforcing bars of the unidirectional beam reinforcing bar 2 and 5 are completed beam reinforcing bars intersecting the unidirectional beam reinforcing bar 2. The upper beam rebars 3 of the unidirectional beam rebars 2, the lower beam rebars 4 of the unidirectional beam rebars 2, and the completed beam rebars 5 intersecting the unidirectional beam rebars 2 are preassembled on the premises or at the factory. The upper beam reinforcement 3 is assembled with the stirrup 3b on the upper rib 3a,
While connecting the middle part of the stirrup 3b with the abdominal muscle 3c,
Two auxiliary muscles 3 at both ends and an intermediate portion of the abdominal muscle 3c
d is formed in the direction of the beam except the panel zone of the pillar 1, and the lower beam rebar 4 is assembled with the stirrup 4b on the lower stirrup 4a of one step, and the middle stairs of the stirrup 4b is connected by the abdominal muscle 4c. At the same time, two auxiliary muscles 4d are formed at both ends and an intermediate portion of the abdominal muscle 4c in the beam direction except the panel zone of the column 1. Here, each hindrance of the upper and lower both beam rebars 3 and 4 is set so as to be a predetermined beam hut H when the upper and lower both beam rebars 3 and 4 are vertically combined. The abdominal muscles 3c, 4c and the auxiliary muscles 3 of the upper and lower beam rebars 3, 4
d and 4d are included to suppress the distortion of the split-type two-beam reinforcing bars 3 and 4 and to regulate the overlapping position when the two-beam reinforcing bars 3 and 4 are vertically stacked. Each of the stirrup 3b, 4b of the upper and lower both beam rebars 3, 4 is shown in FIG.
As shown in, gaps 3e and 4e are provided in the lower part of the upper stirrup 3b and the upper part of the lower stirrup 4b, respectively.
Each stirrup 3b of the upper beam 3a and the lower beam 4a of the beam,
4b may be easily dropped, and the reinforcing bar ends of the gaps 3e, 4e of either one of the stir wraps 3b, 4b may be bent back to form the hook 3f or 4f as shown. The completed beam reinforcement 5 is formed in a completed form by assembling the upper reinforcement 5a and the lower reinforcement 5b with the stirrup 5c.

Next, a description will be given of the step of arranging the above-mentioned cross beam rebar. First, the beam form 6 on the upper floor and the slab form (not shown) are constructed, and then the preassembled lower beam rebar 4 is lifted. Assemble into the joint rebar 1a of the pillar head of the pillar 1. After that, the completed shaped beam rebar 5 is lifted up, crossed over the assembled lower beam rebars 4 and assembled into the pillar head. This is possible because the lower beam reinforcing bar 4 does not have an upper bar in the beam direction and the auxiliary bar 4d in the beam direction in the middle stage of the stirrup 4b is omitted in the panel zone of the column 1. Next, from the upper side of the lower beam reinforcing bar 4, the upper beam reinforcing bar 3 is arranged.
The beam reinforcement 2 in one direction is assembled by stacking up to the position where d contacts the upper side of the stirrup 4b of the lower beam reinforcement 4, and the cross-shaped beam reinforcement is completed. Split type upper and lower beam rebar 3,
4 and the completed beam rebar 5 are preassembled by the entire length of the beam, but have a long span, and when connecting, the ends of each upper bar 3a and lower bar 4a are machined at the beam center or 1/4 position. Connect by type fitting or welding. After this, the beams and slab concrete will be cast together to complete the concrete work on this floor.
Note that the concrete construction may be performed by a method of placing columns, beams, and slab concrete at the same time.

FIG. 5 shows an embodiment in which the present invention is applied to a half precast concrete beam. When the beam is subjected to half precast concrete construction, as shown in the figure, the abdominal muscles 4c and below of the lower beam reinforcing bar 4 are half precast. It is embedded in concrete 7 so that the upper beam reinforcing bar 3 can be later combined with the lower beam reinforcing bar 4 from the abdominal muscle 4c to the upper part. By making the beams, slabs, etc., into half-precast concrete in this way, formwork is not required, and labor is further saved and the construction period is shortened.

[0009]

As described above, according to the present invention, a beam rebar is an upper beam rebar in which a stirrup is attached to a beam upper bar,
This is to assemble the lower beam rebar with the stirrup attached to the lower beam rebar and assemble it first, and then assemble the upper beam rebar and the lower beam rebar above and below on site to assemble an integrated beam rebar. Therefore, in the cross-beam, D-shaped beam, L-shaped beam, or assembling rebar construction of large and small beams, beam rebars can be pre-assembled even in a small site on site or at a factory, so there is a shortage of rebar work. At the present time, the labor-saving work of the beam reinforcement and the shortening of the construction period are realized, which is a very useful effect.

[0010]

[Brief description of drawings]

FIG. 1 is a side view of a cross beam rebar reinforced by the method of the present invention.

FIG. 2 is a plan view of the cross beam reinforcement of the same as above.

FIG. 3 is a cross-sectional view showing a step of assembling a beam reinforcement in one direction by combining an upper beam reinforcement with a lower beam reinforcement.

FIG. 4 is a front view showing another embodiment of the star lap.

FIG. 5 is a cross-sectional view of an example in which the method of the present invention is applied to a half precast concrete beam.

[0011]

[Explanation of symbols]

 2 Unidirectional beam rebar 3 Upper beam rebar 3a Lower rebar 3b Stirrup 4 Lower beam rebar 4a Upper bar 4b Stirrup 5 Completed beam rebar 5a Unidirectional beam rebar 5a Upper bar 5b Lower bar 5c stirrup

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Haruhisa Inoue, 2-16-1, Kyobashi, Chuo-ku, Tokyo Shimizu Construction Co., Ltd. (72) Yutaka Saito 2--16-1, Kyobashi, Chuo-ku, Tokyo Shimizu Construction company (72) Inventor Shinichi Yamada 2-16-1, Kyobashi, Chuo-ku, Tokyo Shimizu Construction company

Claims (2)

[Claims] 1. A beam rebar is divided into an upper beam rebar having a stirrup attached to a beam upper beam and a lower beam rebar having a stirrup attached to a beam lower beam and preassembled. Characteristic split type pre-assembled beam rebar. 2. The beam reinforcing bar is divided into an upper beam reinforcing bar having a stirrup attached to a beam upper beam and a lower beam reinforcing bar having a stirrup attached to a beam lower beam, which are preassembled, A split type pre-assembled beam rebar assembling method, characterized in that an upper beam rebar and a lower beam rebar are vertically combined to assemble an integrated beam rebar.