JPS5813691B2 - Floor reinforcing bar arrangement method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for arranging floor reinforcing bars for buildings.

Currently, various types of prefabricated reinforcing bars are being implemented with the aim of streamlining reinforcement work and saving labor.

In conventional cases, columns and beams are generally cage-shaped with reinforcing bars, and floor slabs are constructed on-site, that is, reinforcement is arranged and assembled on-site.

This invention is devised so that the reinforcement of the floor slab can be prefabricated together with the beam reinforcing bars, and the details thereof will be explained below with reference to illustrated embodiments.

In the invention shown in FIG. 1, beam reinforcing bars A and slab reinforcing bars B are assembled together in advance to form a unit of prefabricated reinforcing bars.

The beam reinforcing bars A are composed of upper and lower end main reinforcing bars 1, 1 and scrap reinforcing bars 2, and form planes such as 1-shaped, 10-shaped, and 4-shaped.

The slab reinforcement B consists of upper and lower reinforcing bars 3, 3 perpendicular to the beam main reinforcing bar 1, and upper and lower reinforcing bars 4, 4 parallel to the beam main reinforcing bar 1, and is arranged in a grid pattern.

The upper reinforcing bars 3 are bundled to overlap the upper main reinforcing bars 1, and the lower reinforcing bars 3 are tied to the scrap reinforcing bars 2 with the lower reinforcing bars 3 passing through a predetermined position defined by the structure, slightly below the upper main reinforcing bars 1.

The auxiliary reinforcing bars 7 may also be used as receiving bars to fix the position of the lower slab reinforcing bars.

The ends of the upper and lower reinforcing bars 3, 3 are extended to ensure a lap joint length L1 that is longer than the specified length, and the end parts are made to have different lengths in the upper and lower reinforcing bars 3,
Shift the overlap joint position in step 3 up and down.

Note that there are cases where the north end reinforcing bars cannot be overlapped as shown in Figure 2.

In this case, it is assumed that the upper end reinforcing bar 1 has a structurally sufficient length L2.

In the invention shown in FIG. 3, the main beam reinforcing bars 1, 1, the reinforcing bars 3 perpendicular to the main beam reinforcing bars 1, 1, and in some cases, a part of the slab reinforcing bars 4, 4 parallel to the main beam reinforcing bars 1, 1 are pre-assembled integrally, In addition, the central portion 5 of the slab reinforcing bars is preassembled in advance, or the reinforcing bars of the central portion 5 are assembled on site, and are connected to the slab reinforcing bars 3 and 4 by overlapping them.

Note that the slab reinforcing bars assembled in advance with the beam main reinforcing bars 1, 1 may be only the lower end reinforcing bars 6, as shown in FIG.

In this case, the anchoring length L3 of the upper end reinforcing bar 3 and the central part 5
The length of the overlap joint between the reinforcing bar 6 and the lower end reinforcing bar 6 shall be equal to or longer than the specified length.

This invention has the above-mentioned configuration, and because part or all of the floor slab reinforcing bars as well as the beam reinforcing bars are prefabricated, it is possible to significantly improve labor saving and efficiency at the construction site.

[Brief explanation of the drawing]

1, 2, 3, and 4 are side views showing the outline of the present invention according to different embodiments, and FIG. 5 is a partial plan view of a beam and floor reinforcement. A: Beam reinforcing bar, B: Slab reinforcing bar, 1
...Beam main reinforcing bar, 2... Stirrup bar,
3, 4...Reinforcement bar, 5...Central part, 7.
...Reinforced steel.

Claims (1)

[Scope of Claims] 1. Beam reinforcing bars in which the upper and lower end main reinforcing bars are assembled with scrap reinforcing bars, and slab reinforcing bars that are orthogonal to and parallel to the beam main reinforcing bars are integrally pre-assembled in advance, and the pre-assembled beams are assembled at the site. A floor reinforcing bar arrangement method characterized by superimposing slab reinforcing bars that are orthogonal to each other. 2. The beam reinforcing bars, in which the upper and lower end main reinforcing bars are assembled with scrap reinforcing bars, and a part of the slab reinforcing bars that are orthogonal to and parallel to the beam main reinforcing bars are integrally pre-assembled, and the central part of the slab reinforcing bars is pre-assembled in advance. Alternatively, a method for arranging floor reinforcing bars is characterized in that the pre-assembled reinforcing bars are assembled on-site and the slab reinforcing bars are superimposed and erected.