JPH0410938B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field and Object of the Invention) The present invention relates to a wall reinforcing bar assembly method for connecting and fixing reinforcing bar networks on upper and lower floors of a medium-to-high-rise building.

In recent years, grid-like reinforcing bars are often embedded in the seismic walls of mid-to-high-rise buildings such as apartment complexes, and it is necessary to accurately position and fix the upper end of the lower floor reinforcing bar network and the lower end of the upper floor reinforcing bar network. In the case of double reinforcement, the spacing between the double-strung reinforcing bar grids must also be accurate.

However, in the method of assembling the upper beam structure first, the upper beam structure gets in the way when connecting the upper and lower wall reinforcing bars, and direct connection is cumbersome, so the joint reinforcements are attached to the upper beam. It is inserted into the structure to connect the upper and lower rebar networks.

However, according to this construction method, a large number of joint bars are individually aligned and supported while being attached to the tips of the vertical bars of the lower floor wall reinforcing bar network, which makes the work complicated and takes a long time.

In addition, each joint bar is tied separately to each vertical bar of the wall reinforcing bar network on the upper and lower floors, so some of them may shift or fall off due to concrete injection or other external forces. may occur.

The present invention aims to eliminate the drawbacks of the conventional construction methods as described above.

(Structure of the Invention) The structure of the construction method according to the present invention is as described in the claims, and in short, a plurality of vertical reinforcing bars corresponding to a large number of conventional joint bars are arranged at intervals. By adopting a wall reinforcement reinforcement structure in which horizontal reinforcement is welded through each extension and integrated with each other, and by inserting this into the upper beam structure from above in one step, it is possible to create a structure similar to that of a conventional joint. The result is an effect equal to or greater than that achieved by positioning a large number of stripes one by one accurately one by one and fixing them so that they cannot shift or fall off.

(Example and Supplementary Explanation) Hereinafter, one embodiment of the present invention will be described with reference to the drawings, and other embodiments will be supplemented.

FIG. 1 is a front view of a building structure showing the state at the end of the construction method of the embodiment, FIG. 2 is a side view of the same, and FIG. 3 is a perspective view of a reinforcing bar structure for anchoring wall reinforcements used in the construction method described above.

First, the column structure is composed of H-shaped steel 1, longitudinal main reinforcement 2, hoop reinforcement 3 surrounding it, etc., and between the columns is a lattice beam structure in which angle members 4 and flat plate members 5 are surrounded by lattice reinforcement 6. It is assembled.

In this state, before starting the process of the present invention, a reinforcing bar structure similar to that shown in FIG. The reinforcing bar structure A for anchoring wall reinforcement, which is integrated by welding the through reinforcements 8 arranged in parallel to the extension parts 7b and 7b', is installed in the hoop of the column so that the through reinforcements 8 are vertical and the bent tip 7a faces the column. The extension part 7b and the hoop thread 3 are tied together and fixed at appropriate locations by inserting the extension part 7b inward from the thread 3, and then each extension part 7b is tied and fixed at an appropriate location.
b and 7b', respectively, are brought into contact with the sides of a wall reinforcing bar network in which horizontal reinforcements 9 and vertical reinforcements 10 are welded in a lattice shape, and both are bound to form a double reinforcement arrangement. The upper ends 11 of the comb-like vertical bars of the wall reinforcing bar network are inserted into the lattice beams. After that, a floor formwork (not shown) is installed, and floor reinforcing bars 1 are installed.
Insert 2,13.

In this state, proceeding to the process of the present invention, when the reinforcing bar structure for wall reinforcement shown in FIG. 8 comes into contact with the floor reinforcement 13 and stops at that position, and the wall reinforcement reinforcement structure A
will be accurately positioned and placed. Therefore, the through-bars 8 and floor reinforcing bars 13 of the wall reinforcing bar structure A are tied together at appropriate locations, and a wall reinforcing bar network double reinforced with the extensions 7b, 7b' of the fixing structure A is formed. The ends of the vertical bars 10, 10' are tied together and connected. After that, concrete for the floor, walls, and columns is poured, and the lower part of the vertical reinforcement of the wall reinforcement network is tied to the upper part of the wall reinforcement reinforcement structure A protruding above the floor concrete upper surface 14 in the same way as on the lower floor. and assemble the upper floor wall reinforcing bar net.

The embodiment of this construction method is not limited to the above-mentioned example, and various changes are possible. For example, the diameters of the reinforcing bars constituting the wall reinforcing bar structure A may not be the same, and may not be the same as the diameters of the reinforcing bars of the wall reinforcing bar network. The spacing between the vertical reinforcing bars constituting the wall reinforcing reinforcing bar structure does not have to be the same as the lattice spacing of the wall reinforcing bars. The bent ends of the vertical reinforcing bars do not need to be aligned upward, and may be provided at both ends of the vertical reinforcing bar extension.

However, the reinforcing bar structure A for anchoring wall reinforcement is made by arranging multiple reinforcing bars of a predetermined length in parallel and at equal intervals, and welding a pair of intersecting bars perpendicular to the reinforcing bars, so that a plurality of parallel bars are connected from the center between the intersecting bars. A reinforcing bar that is folded in half into a U-shape or U-shape is easy to manufacture and easy to use. If the wall reinforcing bars are single-reinforced, do not use this wall reinforcement three-dimensional structure for fixing the reinforcing bars.
A structure in which cross reinforcing bars are welded to a plurality of reinforcing bars bent in a letter shape and arranged in parallel may be used, but a structure as in the above embodiment may also be used. In that case, the ends of the vertical bars of the lower floor wall reinforcing bar network may be inserted between the extensions 7b and 7b' of the anchoring reinforcing bar structure, and appropriate spacers may be placed to position and bind them. The same applies to the placement of upper floor wall reinforcing bars. In addition, in the wall reinforcement reinforcement structure, the intervals between each vertical reinforcement are made large, and another structure similar to the above is placed in the middle of the interval between the vertical reinforcement bars of one wall reinforcement reinforcement structure. An overlapping arrangement is possible, such as locating the vertical reinforcing bars of the body.

(Effects) As described above, this construction method connects the wall reinforcing bar networks on the upper and lower floors to each other, thereby eliminating the complexity and delay in on-site construction that would occur by installing individual joint bars between the two. do. In other words, by inserting a single reinforcing bar structure for anchoring wall reinforcement into the interior of the pre-assembled upper beam structure from above, the work is comparable to the conventional method of attaching a large number of joint bars at once. It brings about speeding up of the process.

Furthermore, since the wall reinforcement reinforcing structure is a one-piece body that has been positioned and welded in advance according to predetermined dimensional specifications, it can be positioned extremely accurately without much effort, and no complicated support alignment is required during installation. In particular, when placing wall reinforcing bars in double reinforcement, both side extensions 7b of the vertical reinforcing bars of the reinforcing bar structure for anchoring wall reinforcing bars,
Since the spacing of 7b' is accurate, it acts as a spacer to maintain the spacing of the wall reinforcing bar network.

Moreover, since the vertical reinforcing bars of the wall reinforcement reinforcement structure are integrally welded to the through-bars and the connection is strong, some of the joint bars may shift or fall off due to pouring concrete or other external forces. The drawbacks of the method are completely eliminated and work on the upper floor can be done safely.

[Brief explanation of drawings]

FIG. 1 is a front view of a building structure showing the state at the end of the construction method of the present invention, FIG. 2 is a side view of the same, and FIG. 3 is a perspective view of the reinforcing bar structure for wall reinforcement used. 1... H-shaped steel of the column structure, 2... Vertical main reinforcement, 3
...Same hoop reinforcement, 4...Beam angle material, 5...
Same flat plate material, 6... Same lattice bar, 7... Vertical reinforcing bar of wall reinforcement reinforcement structure A, 7a... Same tip part, 7
b...Extension part, 8...Through bar, 9...Horizontal bar of wall reinforcing bar network, 10...Vertical bar, 11...Tangled vertical bar upper end, 12, 13... Floor reinforcing bar, 14 ...The top surface of the concrete floor.

Claims (1)

[Claims] 1. Insert the tip of the vertical reinforcement of the lower floor wall reinforcing bar network into the pre-assembled upper beam structure, and then insert the vertical reinforcing bars with extensions extending downward from the bent tips at intervals. A wall reinforcement reinforcement structure, which is made by welding and connecting multiple joint reinforcement bars arranged in parallel and through-bars perpendicular to the extensions of these vertical reinforcement bars, is inserted into the upper beam structure from above. insert,
After binding the tips of the vertical reinforcing bars of the lower floor wall reinforcing bar network and the lower part of the vertical reinforcing bars of the reinforcing bar structure for anchoring wall reinforcements, floor concrete is poured, and the reinforcing bars for anchoring wall reinforcements protrude from the top surface of the concrete. A wall reinforcing bar assembly method in which the lower ends of the vertical bars of the upper floor wall reinforcing bar network are tied together at the top of the structure, and the wall reinforcing bar networks on the upper and lower floors are fixed and fixed.