JPS61246472A - Wall reinforcing bar assembling method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Field and Object of the Invention) The present invention provides a construction method for assembling a wall reinforcing bar network that connects and fixes a wall reinforcing bar network to a column structure to be stretched in a wall space of a medium-to-high-rise building. Regarding.

BACKGROUND ART As wall reinforcing bars embedded in earthquake-resistant walls of medium-to-high-rise buildings such as apartment complexes, a reinforcing bar network in which vertical and horizontal bars are welded in a lattice pattern is increasingly used.

The side edges of this wall reinforcement network adjacent to the columns should be reinforced with reinforcing bars or steel frames.
It must be inserted into the interior of the column structure made of steel bars surrounded by hoop reinforcements, and the wall reinforcement network must be positioned accurately to prevent it from shifting or falling off.

However, it is difficult to insert the tips of the transverse bars of the wall reinforcing bar network until they reach the reinforcing structure of the columns, so after first bringing the tips of the transverse bars close to the column structure and inserting them, it is necessary to insert a large number of insert bars of a certain length. While positioning and supporting the reinforcing bars so that one end fits inside the reinforcing bar structure of the column and the other end overlaps with the side edge of the wall reinforcing bar network, this insert bar is tied to the column structure and wall reinforcing bar, and the wall reinforcing bar They often settle in nets on pillars.

However, with this construction method, a large number of reinforcing bars must be individually aligned and supported while being attached to the side edges of the wall reinforcing bar network and the column structure, making the work complicated and taking a long time. Become.

In addition, since each of the above-mentioned insert bars is individually tied to the horizontal bars of the reinforcing bar network and the hoop bars of the column, there is a possibility that some of the insert bars may be displaced from their predetermined positions or detached due to concrete pouring or other external forces. This may result in an incomplete structure.

The present invention aims to provide a new construction method that eliminates the drawbacks of the conventional construction methods 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, the main feature is that a joint reinforcing bar member that is compatible with a large number of conventional reinforcing bars is used. A fixing reinforcement structure is adopted that connects the wall reinforcements and columns by arranging multiple reinforcements vertically and overlapping each other at the required intervals, and welding the extended portions and orthogonal through-reinforcing members to the columns. It is inserted into the reinforcing bar enclosure of the column structure during the process, and by doing so, it is equivalent to or better than the conventional method of positioning multiple reinforcing bars one after another accurately and fixing them to the warehouse without being able to move or remove them. It's in a place where it's designed to be effective.

(Example and Supplementary Explanation) An example of the present construction method will be described below with reference to drawings, and modified examples will be supplemented.

First, to give an overview, there are columnar structures A and A' made of steel frames and reinforcing bars in Fig. 1, a concrete-cast floor plate B, and a wall space R with joint reinforcements protruding from the upper surface in the shape of a wedge. From the side, as shown in FIG. 2, the wall reinforcing bar structure C used for this construction method is inserted into the reinforcing bar enclosure of the column, and is tied and fixed to the column structure. Then, as shown in Figure @3, the lower end of the vertical bar of the wall reinforcing bar network is tied to the comb-shaped joint bar protruding from the subfloor board, and one side edge of the wall reinforcing bar network is fixed to the column. It is coupled to an extension of a joint reinforcing member protruding from a column of the above-mentioned wall reinforcing reinforcing bar structure C.

Next, as shown in FIG. 4, the wall reinforcing bar network D' is stacked one after another, and the reinforcing bar structure C' for anchoring the wall reinforcing bars is also placed on the column structure A' on the opposite side.
are inserted and bound and fixed in the same way as before, one side edge of the wall reinforcing bar network Dll is overlapped and tied to the wall reinforcing bar network D', and the other side edge is tied and fixed to the wall reinforcing bar structure C'.

After that, wall reinforcing bars are sequentially installed in the same way as before, parallel to the plane of the stretched reinforcing bar net, at the required intervals, that is, in this example, 10 m intervals, as shown in the plan view of Fig. 5. It will have a double reinforcement structure.

In this example, the column center spacing is 8,000 wx, the height of the -story is 2,700 m, and the insert or joint reinforcement members protruding from the floor plate B are spaced at intervals of 150 m+ to 200 cm. The reinforcing bar structure C for anchoring wall reinforcements and its installation will be described in detail as follows.

The reinforcing bar structure C for anchoring wall reinforcements is as shown in the sketch of FIG.
A pair of extensions 1b, lb extending in parallel with a distance of m.
A plurality of joint reinforcing bars 1.1, . The bent tip portions 1 on the extension portions 1b and lb'
Upper and lower extensions 1b, lb...and lb', lb', at a distance of 220 cm from a to the opposite end.
One through-reinforcing bar member 2 on the left and right so as to be orthogonal to .
．． 2' are welded to form an integral structure.

In the wall reinforcement reinforcement structures c and c' of the above embodiments, a large number of blood lines to be a plurality of joint reinforcement members 1 are arranged in parallel at an interval of 150 or 200 lines, and a direct spun 2 is perpendicular to the lines. Books were welded at a distance of about 450 m to form an integrated grid-like structure, and then the center of the many blood lines was folded in half into a U-shape) and auxiliary lines a were arranged to form a three-dimensional structure. be.

As shown in FIGS. 2 and 7.8, this wall reinforcement reinforcement structure C is constructed from the wall space R side toward the center of the column structure A. The tip portions la, Ia... of the joint reinforcing bar members 1.1...
- The steel frame 3 of the column structure A and the hoop reinforcements 5 surrounding the blood vessels 4 have also reached the inside of the column structure A, so that the through-reinforcing bar members 2 constituting the wall reinforcement reinforcement structure C are connected to the 7-pipe of the column structure A. It is inserted until it comes into contact with the reinforcement 5, and both are tied together at a plurality of locations with appropriate spacing between them. As a result, a state similar to that in which a large number of conventional reinforcing bars are attached at the same time and with their mutual positions and positions relative to the pillars accurately regulated is achieved. Each joint reinforcing bar member 1.1 welded to the through reinforcing bar member 2.2'...
...will not cause displacement or separation due to subsequent concrete injection.

Next, as shown in Fig. 3 and Fig. 7, welded vertical bars 6 and horizontal bars 7 with reinforcing bar diameter 10 cm have a lattice spacing of 150 cm or 200 cm.
Reinforcement structure C for anchoring wall reinforcements, in which a network of wall reinforcements approximately 2,500m in height and 3,000mm in width is inserted by crane work or other means, and the vicinity of the side edges are attached to column structure A.
Extension portion 1bKfi of each joint reinforcing bar member 1 constituting the wall reinforcing bar network is in contact with vertical reinforcement 6 and horizontal reinforcement 7 of the wall reinforcing bar network, comb-like joint reinforcement protruding from the subfloor surface B, and extension portion 1b of the joint reinforcing bar member 1. and are joined at each necessary location. The connection between the wall reinforcing bar network and the anchoring reinforcing bar structure C is approximately 400 mm outside the column reinforcing bar structure.
This is done by tying together appropriate points in the overlapping portion of the extended portion 1b of the protruding reinforcing bar member 1 for the joint and the two vertical bars 6 and the horizontal bars 7 at the side edge portions of the wall reinforcing bar network.

Next, the 4th rI! As shown in J, the wall reinforcing bar network D' is attached in the usual manner, and then the wall reinforcing bar network DIl is attached to the attached wall reinforcing bar anchoring structure C' or the existing structure C' in the same manner as before.

This completes the installation of one side of the double reinforcing bar net, and then the wall reinforcing bar net on the other side parallel to this is installed in the same process as before, completing this construction method.

The above example is an example in which the upper beams or floor reinforcing bars on the upper floor are assembled later and the wall reinforcing bar network is double reinforced, but when the upper beams etc. are assembled first or the wall reinforcing bars are single reinforced. It goes without saying that this method can also be applied to

In other words, when the wall reinforcing bar network is a single layer, a fixing structure is constructed by arranging a plurality of joint reinforcing bars whose tips are bent into an L-shape or the like in parallel, and welding through the reinforcing bar members and auxiliary bars parallel to the reinforcing bars. However, it is also possible to use the structure shown in the above embodiment and the structure of Shishi. In the latter case, insert the side edges of the wall reinforcing bar network between a pair of parallel extensions of each joint reinforcing bar member of the reinforcing bar structure for wall reinforcement anchorage, adjust the mutual position of both with spacers, and fix. Bye.

In addition, we will discuss an example of implementing this construction method on a structure pre-assembled with lattice beams, including the process up to concrete pouring.

That is, in this case, as shown in Fig. 9, the wall reinforcing bar network is stretched in single or double layers, and the comb-like protruding portions at the upper ends of the vertical bars are connected to the angle members 8, the flat plate members 9, and the lattice bars 10. Insert the force lattice into the imaginary.

In this state, the floor plate lattice reinforcement 11 or upper end reinforcement of the upper floor is arranged, and the wall reinforcement reinforcement structure C shown in FIG. Insert it into the beam from above the lattice beam with the side facing up.
The through reinforcing bar member 2 is fixed at the position where it comes into contact with the floor plate lattice reinforcing bar 11.

In this case, the structure is the same as that of attaching a large number of reinforcing bars at once, and there is no fear that some of the reinforcing bars may become misaligned or detached, which is different from the case where multiple insert reinforcing bars are used. After that, when concrete is poured for columns, floor plates, and walls at the same time, the extension part 1b of the joint reinforcing bar member 1 constituting the reinforcing bar structure C stands on the floor surface with the tip part 1a exposed upward and in parallel. The vertical bars of the wall reinforcing bar network on the upper floor are bound and connected to this.
As before, this construction method can be applied to the upper floors.

The specific structure of the wall reinforcement anchoring structure used in these construction methods is not limited to the above-mentioned embodiments.

As the joint reinforcing bar member, one with a large diameter and one with a small diameter may be used in combination, and the shape and formation method of the bent end portion can be freely determined, and these can be provided at both ends of the extension portion. If only one end of the extension has a bent tip, the tip may be oriented vertically in the opposite direction. As long as the extension part extends substantially in the horizontal direction, there is no problem even if the extension part has a sloping curve or the like in a part of the extension part. The spacing between each joint reinforcing bar member may be an integral multiple of the spacing between the horizontal bars of the wall reinforcing bar network.

As mentioned above, the feature of this construction method is that the installation of wall reinforcing bars on a single pillar is fixed, and it uses a reinforcing bar structure for anchoring wall bars of an integral structure, which is different from conventional construction methods. By attaching it to the column, a large number of joint reinforcing bars are fixed in position, and the side edges of the wall reinforcing bar network are attached to their extensions.

Depending on the situation, it is appropriate to select whether this step is to be carried out at various locations simultaneously or sequentially, or at what stage wall reinforcing bars and other structural members that are not involved in this step are to be installed. In addition, when double reinforcing a normal wall reinforcing bar network, contrary to the conventional order, first attach the wall reinforcing bar structure to the column structure, and then attach the wall reinforcing bar network to this. Become.

(Effects) As described above, this construction method eliminates the complexity and delay in on-site construction caused by installing individual reinforcing bars between the wall reinforcing bars and the column structure in order to fix them to the column structure. .

That is, by attaching - number of reinforcing bar structures for anchoring wall bars to columns, the construction work can be completed more quickly than if a large number of reinforcing bars were inserted all at once.

In addition, since the above-mentioned reinforcing bar structure for anchoring wall reinforcement is an integral piece welded according to predetermined dimensional specifications, the positioning of the joint reinforcing bar members is extremely accurate (To), and the positioning with the pillars is difficult during installation. does not require In particular, when the wall reinforcing bar network is installed in double tension, the intervals between the extensions of the joint reinforcing bar members are accurate, so that the extensions of the joint reinforcing bar members themselves act as spacers to maintain the spacing between the wall reinforcing bar networks.

Moreover, since the joint reinforcing bars and the through reinforcing bars of the wall reinforcement reinforcement structure are welded together, some of the joint reinforcing bars may shift or come off due to concrete injection or other external forces. do not have.

Furthermore, according to this construction method, even when installing several or more wall reinforcing bars on one wall with wide spacing between columns, it is sufficient to prepare reinforcing bars with at most three different dimensional specifications. This has the advantage of making its management easier.

[Brief explanation of the drawing]

Figures 1 to 4 are front views of building structures showing the general sequence of an example of the construction method according to the present invention, Figure 5 is a plan view corresponding to Figure 4, and Figure 6 is the reinforcing steel structure used in this construction method. FIG. 7.8 is a sketch of an example of the structure, and FIG. 7.8 is a detailed front view and plan view of a part of FIG. A, A'...Column structure, B...Subfloor board, R...
Wall space, C...Reinforced structure for wall reinforcement, D% l)
', D/l...Wall reinforcement network, 3...Column steel frame, 4...
・Column reinforcement, 5...7-pu reinforcement, 1...joint reinforcing bar member,
la... the same tip, lb... the same extension part, 2... the through reinforcing bar member, 6... the wall reinforcing bar network vertical reinforcement, 7... the same horizontal reinforcement,
8... Angle material, 9... Flat plate material, lO... 2-chiss bar, 11... Floor lattice reinforcing bar

Claims (1)

[Claims] A plurality of joint reinforcing bars in which extensions extending laterally from the bent tips are stacked vertically at intervals are connected by welding to through reinforcing bars arranged above and below these members and perpendicular to the extensions. The above-mentioned tip of the joint reinforcing bar member is a column reinforcing bar or a steel frame.
A wall reinforcing bar network that is inserted and fixed in such a way that it fits inside the reinforcing bar enclosure on the wall space side of the reinforcing bar structure, and that is built in the extension of the joint reinforcing bar member that constitutes the anchoring reinforcing bar structure and the wall space. A wall reinforcing bar assembly method characterized by overlapping and fixing the side edges of