JPS609181B2 - Assembly method of reinforcing bars in cast-in-place reinforced concrete construction - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a method for assembling reinforcing bars in cast-in-place reinforced concrete construction, and is aimed at simplifying on-site construction, improving construction accuracy, and reducing construction costs, and is mainly used for construction of mid-to-high-rise buildings. Make use of it.

In the construction of medium- and high-rise buildings, methods such as the cast-in-place method, in which reinforcement is arranged and concrete is poured on-site, and the method of using prefabricated panels, etc., are adopted. However, reinforcing work on site is very time-consuming, and when using panels, it is necessary to devise a method for joining the panels together, which may not necessarily be economical or reasonable in terms of design. There is a need for a method that is easier to perform and has better yield strength. The method of assembling reinforcing bars in a hammer-in-place type reinforced concrete construction according to the present invention was invented in view of the above-mentioned circumstances, and will be explained below based on the illustrated embodiments.

Figure 1 shows a cross section of reinforcement at the connection between load-bearing wall A in the beam direction and wall column B in the column direction, and Figure 2 shows a cross section at the wall beam C located above it. ing.

The wall pillar B is a column member formed in the shape of a wall and has an elongated rectangular cross section, and together with the wall beam C, which is also a beam member formed in the shape of a wall, forms a wall-type rigid frame, and the entire wall structure is made of reinforced concrete. give. In the figure, reference numeral 1 indicates a reinforcing bar grid, in which vertical bars 2 and horizontal bars 3 are assembled in advance into a mesh shape by welding or other means.

The load-bearing wall A and the wall pillar B form a reinforcing bar building by arranging two reinforcing bar grids 1 facing each other. At this time, the ends of the armrest B are connected by a fore closing muscle 4 formed in a U-shape as shown in FIG. In addition, for the joint between the load-bearing wall A and the wall pillar B, a hairpin-shaped anchoring bar 5 or a bar-shaped joint bar 6 is used.
Fix the load-bearing wall A and wall pillar B using. That is, at the location where the load-bearing wall A and the wall pillar B intersect in a T-shape, the pin-shaped anchoring bars 5 pass through the wall pillar B and connect with the horizontal reinforcements 3 of the load-bearing wall A, and also intersect in a cross shape. At certain locations, the transverse reinforcements 3 of the load-bearing walls A are connected by rod-shaped joint reinforcements 6, and the wall pillars B are penetrated to achieve fixation. The vertical bars 2 of the reinforcing bar lattice 1 of the wall pillar B are densely arranged at the ends to cope with stress and force, and are spaced widely in the center.
Further, the reinforcement for the wall beam C is already prepared in the factory, and a prefabricated reinforcing bar 7 consisting of the beam main reinforcement 8 and the beam stirrup 9, which were manufactured after one day, is used.

The length of this prefabricated reinforcing bar dragon 7 is one span, that is, the length between adjacent wall pillars B, and a required anchoring length is provided at both ends. If this anchoring length is insufficient, it can be compensated for by providing hooks at the ends of the main beam reinforcements 8. Further, since the cross section of the wall beam C is vertically elongated, abdominal muscles 10 or the like are provided as necessary to maintain the shape. FIG. 3 shows a state in which the prefabricated reinforcing bars 7 of wall beams C are hung between adjacent wall pillars B as described above.

Next, to explain the construction procedure of a building using the method of this invention, first, the reinforcing bar grid 1 of wall pillar B and load-bearing wall A
Then, attach the edge closing bars 4, fixing bars 5, joint bars 6, and width stop bars as appropriate.

Subsequently, the prefabricated reinforcing bars 7 of the wall beams C, which have been assembled in advance, are attached to the tops of the wall pillars for each span. Then the wall formwork,
The floor formwork is erected, floor reinforcement is arranged, and concrete is poured. The reinforcement for this floor is also arranged using the above-mentioned reinforcing bar grid 1, and after the concrete has developed its strength, the formwork is removed and construction begins on the upper floor. This invention has the above-mentioned configuration, and the reinforcement work for wall columns and load-bearing walls is streamlined and labor-saving by using a reinforcing bar grid, and prefabricated reinforcing bars for each span are also used for reinforcing wall beams. This simplifies the structure of the connecting parts of each member, allowing for quick and highly accurate construction.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a cross-sectional view of reinforcement at the connection between a load-bearing wall and a wall column, FIG. 2 is a cross-sectional view at the position of the wall beam above it, and FIG. The figure is a front view showing the reinforcement arrangement at the joint between a wall beam and a wall column. A...Load-bearing wall, B...Wall pillar, C...
...Wall beam 1...Reinforcement grid, 2...Vertical bars, 3.
...Transverse muscle, 4...Lotus occludens muscle, 5...
...Anchor muscle, 6...Joint muscle, 7...
0 Prefabricated reinforcing bar dragon, 8... Beam main reinforcement, 9... Beam stirrup, 10... Abdominal muscle. Section 1 Sardine 2 Sekigama 3

Claims (1)

[Claims] 1 For load-bearing walls in the beam direction and wall pillars in the girder direction, two reinforcing bar lattices made of vertical and horizontal reinforcements arranged in a mesh shape are arranged facing each other to form a reinforcing bar cage, and together with the wall pillars, a wall-type rigid frame is constructed. A method for assembling reinforcing bars in cast-in-place type reinforced concrete construction, characterized in that for the wall beams forming the wall beams, a prefabricated reinforcing bar cage consisting of pre-assembled beam main bars and beam stirrups is fixed for each span of the wall columns.