JPS6149462B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <<Industrial Application Field>> The present invention relates to a method for constructing a reinforced concrete wall in reinforced concrete or steel reinforced concrete construction.

≪Conventional technology and problems≫ In wall reinforcing work, prefabricated lattice reinforcing bars or welded wire mesh are used to save labor, but it is customary to use the joints of the reinforcing bars as lap joints. .

To explain with reference to FIG. 1, when concrete is poured, it is necessary to make the reinforcing bars protrude from the floor 7 as joints for the wall vertical bars. These reinforcing bars become a huge nuisance during concrete pouring, plastering and marking of the top of concrete, and also cause safety problems such as tripping, and if the reinforcing bars are used as wrap joints, the reinforcement length of the wall itself may become too large. However, there are other problems, such as the need for extra length of reinforcing bars, which includes the length for the beam and lapping allowance. Conventional work involves marking out the concrete floor, erecting one side of the wall formwork, and marking out openings such as entrances and exits, and then the wall reinforcement is laid out. Therefore, the process was severely restricted, and the processing and assembly of reinforcing bars was done according to the ink on site, which was time-consuming and required skilled workers. In addition, there is a lot of work and inspection before closing with wall formwork, such as installing entrances, exits, equipment openings, etc., reinforcing reinforcing bars at the openings, inspecting the bar arrangement, etc., and the reality is that there are many problems in terms of quality control.

This invention was made in view of the above-mentioned conventional problems, and aims at saving labor in reinforcing steel work and saving resources for reinforcing bars.

<Means for Solving the Problems> In order to achieve the above object, the present invention arranges pre-assembled wall reinforcing panels 1 in a space surrounded by reinforced concrete or steel reinforced concrete columns and beams. The panel 1 is attached to the pillar/beam by using the already driven floor anchor steel plate 2 and the steel plates 4, 5 with pillar/beam anchors attached at appropriate positions on the outer periphery of the panel 1 excluding the floor part 7. This method of constructing a reinforced concrete wall is characterized by fixing it to the main reinforcing bars of beams and pouring concrete.

<<Operation>> The method for constructing a reinforced concrete wall according to the present invention is as follows: attaching a steel plate with an anchor at an appropriate position on the outer periphery of the wall reinforcing panel 1, and fixing the wall reinforcing panel 1 to the main reinforcing bars of a column or beam via the steel plate. This allows stress to be transmitted during earthquakes, etc., as before, improving workability such as marking, and saving reinforcing bars.

<<Example>> Construction of a preferred embodiment of the present invention will be explained according to the drawings.

First, in Fig. 2, the steel plate 2 with floor anchors is
These were fixed to the beam main reinforcing bars, slab reinforcing bars, etc. when pouring concrete for the lower floor.
Using this steel plate 2 with floor anchors, a wall reinforcing panel 1 (the outer periphery of the panel is reinforced with reinforcing bars 3), which has been preassembled in a factory etc., is installed in a space surrounded by columns and beams. Furthermore, it is attached and fixed to the main reinforcing bars of columns and beams through the steel plates 4 and 5 with anchors for columns and beams by known means such as binding or welding.

Next, formwork is erected in the order of columns, walls, beams, and floors, followed by reinforcing bars for the beams and floors. Thereafter, the steel plate 6 with floor anchors is attached to the beam main reinforcing bars and concrete is poured in the same manner as the steel plate 2 with floor anchors described above. The above-described operations are repeated using the steel plate 6 with floor anchors.

In this invention, the steel plate with anchor means 2 for floor use,
6. Collectively refers to the steel plates 4 for columns and the steel plates 5 with anchors for beams.

In addition, although the steel plates with anchors are shown in the figure, two each on the upper and lower sides of the wall reinforcing panel, and on the left and right sides, the number can be increased or decreased as appropriate through structural calculations.

Figures 3, 4, and 5 show wall reinforcing panels 1 according to other embodiments of the present invention. (Construction method), Figure 5 shows the shear of concrete during an earthquake.
This is a diagonal reinforced panel to effectively prevent cracks, and steel plates with anchors are used for the joints where there are no anchoring reinforcements.

Fig. 6 shows an example of a steel plate with anchors, Fig. A shows a steel plate 9 with U-shaped reinforcing bars 8 protruding from both sides and welded at the center, and Fig. B is a side view of Fig. A.

In Figure C, the steel plate 9 in the center is made larger and U-shaped or straight reinforcing bars 8 are attached in three directions as necessary, and are used at the upper and lower corners of the wall reinforcing panel 1.
It can also be used as a joint anchor between a column (or wall) and a beam.

In Figure 2, reinforcing bars 8 are welded and attached to a steel plate 9 in an X-shape.

If the column or beam is a steel frame structure and the steel plate with an anchor cannot be anchored because the steel frame is an obstacle, remove the anchor reinforcing bar 8 on the side that gets in the way in Figure 6, and attach the steel plate 9 to the steel column or beam. They can also be welded together facing each other.

Furthermore, if the wall reinforcement is double reinforced, generally the steel plates with anchors are also doubled. When using a single steel plate with anchors, it is better to place it in the middle of the double reinforcement arrangement and reinforce it with a spiral hoop or the like around the steel plate with anchors.

≪Effects of the Invention≫ As explained in the examples below, this invention is a method for constructing a reinforced concrete wall using a wall reinforcing panel 1 and a steel plate with an anchor. The quantity can be reduced,
The improvement effect is significant in terms of workability and safety, and the amount of reinforcing bars used in Fig. 2 is as small as possible compared to Fig. 1, making it possible to significantly reduce the amount of reinforcing bars.

In addition, since the wall reinforcing panels as shown in Figures 2 to 5 are pre-assembled on the ground, inspection of reinforcement arrangement and opening position can be carried out reliably, and work can be carried out by a fixed number of workers at all times to the extent that there is no problem with the process. . In addition, it requires fewer skilled workers, saves labor in construction, saves on reinforcing bars, and greatly contributes to safety.

[Brief explanation of the drawing]

Fig. 1 is a front view of a conventional wall reinforcement arrangement, Fig. 2 is a front view of a reinforced concrete wall according to the present invention, and Figs.
Fig. 5 is a front view of a wall reinforcing panel according to another embodiment of the present invention, Fig. 3 is a case with an opening, Fig. 4 is a case where only the joint with the beam is fixed with reinforcing bars, and Fig. 5 is an oblique view. In the case of reinforcement, Figure 6 shows an example of a steel plate with anchors. Figure A is a front view with anchor reinforcing bars attached in a U shape, Figure B is a side view of Figure A, and Figure C is a larger steel plate with beams and columns. Figure 2 is a front view with the anchor reinforcing bars installed in an X-shape. 1...Wall reinforcing panel, 2...Steel plate with floor anchor, 3...Perimeter reinforcement, 4...Steel plate with column anchor, 5...Steel plate with beam anchor, 6...Steel plate with floor anchor, 7... Floor, 8... Anchor reinforcing bar, 9... Steel plate, 10... Column, 11... Beam,
12...Wall.

Claims (1)

[Claims] 1 A pre-assembled wall reinforcing panel 1 is placed in a space surrounded by columns and beams made of reinforced concrete or steel-framed reinforced concrete, and the floor anchor steel plate 2 that has already been driven and the floor part 7 of the panel 1 are placed. The panel 1 is attached to columns and beams using steel plates 4 and 5 with anchors for columns and beams attached at appropriate positions on the outer periphery.
A method of constructing a reinforced concrete wall, characterized by fixing it to the main reinforcing bars of beams and pouring concrete.