JPH06257241A - Construction method of concrete wall - Google Patents

Abstract

PURPOSE:To promote execution efficiency, to have structurally high reliability and to promote economic efficiency. CONSTITUTION:Longitudinal ribs 3 into which vertical reinforcements 2 are inserted every specific intervals are projected to a vertical wall slab 1, joining inserts 4 are buried in the front ends of the same ribs 3, and a pair of semi- precast concrete wall slabs A boring bolt holes 8 in the middle of adjacent longitudinal ribs 3 in the wall slab 1 mentioned above are so opposed that the ribs 3 are inconsistent with each other to position. Bolts 10 inserted through the bolt holes 8 of the wall slabs A are screwed and fastened to the inserts 4, and concrete B is placed between both wall slabs A and A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a concrete wall of a building or a work.

[0002]

2. Description of the Related Art Conventionally, in the case of constructing the concrete wall, (a) a cast-in-place concrete construction method in which a formwork is assembled, reinforcing bars are arranged and concrete is placed. (B) A precast concrete construction method in which concrete walls are created in advance at other locations and transported to the installation location for assembly. (C) Half-precast concrete that secures the wall thickness by assembling the formwork on one side of the wall where the semi-precast concrete plate such as the Omnia version is to be constructed and by arranging the concrete and placing concrete between them. Construction method. And so on.

[0003]

However, the formwork method of (a) above requires labor of many types of work, and has a problem in terms of construction period and construction cost. In the precast concrete construction method of (b), the weight of the precast concrete wall slab becomes large and there are restrictions in terms of transportation and lifting. The half-precast concrete method of (c) requires a lot of labor.

The present invention has been proposed in view of the above problems of the prior art. The object of the present invention is to improve the workability of the concrete wall, which is structurally highly reliable and economical. The point is to provide a construction method.

[0005]

In order to achieve the above object, according to the concrete wall construction method of the present invention,
Vertical ribs in which vertical streaks are inserted are projectingly provided at predetermined intervals on the vertical wall slab, a joining insert is embedded at the tip of the rib, and an air vent hole is penetrated at the base end, and the wall is formed. A pair of semi-precast concrete wall slabs in which bolt holes are bored in the middle of adjacent vertical ribs in the slab are positioned so that the respective vertical ribs provided on the facing surfaces of the respective wall slabs are different from each other. As opposed to each other, the joint bolts inserted into the bolt holes of each wall slab are screwed and tightened to the insert of the opposite wall slab, and the concrete is placed in the hollow part formed between the two half precast concrete wall slabs. It is to be placed.

[0006]

According to the present invention, as described above, the semi-precast concrete wall slab in which the joining inserts are embedded at the tips of the vertical ribs projecting from the vertical wall slab at predetermined intervals and having vertical lines respectively inserted therein. Oppositely, abutting the ribs arranged disagreement with each other in each semi-precast concrete wall slab to the opposing semi-precast concrete wall slab, to the insert embedded in the rib tip, each of the semi-precast concrete wall By inserting a bolt into a bolt hole formed between adjacent vertical ribs in the plate and screwing and tightening, a wall formwork in which a predetermined wall thickness is held by the pair of semi-precast concrete wall plates Constituting concrete into the hollow part formed between the two half precast concrete wall slabs, and concrete with a predetermined wall thickness And applying a by inserted reinforcing bars in the longitudinal direction ribs, is to reinforce the concrete wall.

At this time, the air in the concrete is removed by the air holes penetrating the base end of the longitudinal ribs.
Solid wall concrete is cast.

[0008]

The present invention will be described below with reference to the illustrated embodiments. A is a semi-precast concrete wall slab, and vertical ribs 3 in which vertical ribs 2 are inserted are projected at predetermined intervals on a thin-walled vertical wall slab 1 on which horizontal streaks and crack prevention streaks are arranged,
A joining insert 4 is embedded in the tip of the rib 3, and an air vent hole 5 extending in the horizontal direction is penetrated in the base end portion.
Further, the wall slab 1 is embedded with a lateral wall reinforcement 6 and a crack prevention reinforcement 7. Further, bolt holes 8 are formed between adjacent vertical ribs 3.

Furthermore, the base of the inverted V-shaped hoop muscle 9 is embedded in the wall slab 1, and the curved portion provided at the projecting end of the hoop muscle 9 is wound around the vertical muscle 2. At the time of manufacturing the wall slab A, a semi-precast concrete wall slab in which the ribs 3 having been manufactured in advance are set in a wall slab form and the wall slab concrete is placed in the wall slab, and vertical ribs are projected. A is molded.

Thus, one pair of the semi-precast concrete wall slabs A are placed opposite to each other, and the longitudinal ribs 3 located opposite to the facing surfaces of the wall slabs A are abutted against the wall slabs A facing each other. Between the pair of semi-precast concrete wall slabs A, bolts 10 inserted into the bolt holes 8 of the wall slab A are screwed and tightened to the joining insert 4, and thus are opposed to each other at a predetermined interval via the ribs 3. Concrete B is cast in the hollow part of the above to construct a wall body.

At this time, the air in the concrete is removed from the air vent holes 5, solid wall concrete is placed, and the reinforcing bars embedded in the vertical wall slab 1 and the vertical bars 2 inserted in the ribs 3, Along with the existence of the inverted V-shaped hoop muscles 9 wound around the vertical muscles 2, a rigid reinforced concrete wall is constructed. The air vent hole 5 of the longitudinal rib 3 at the end of the wall slab A is used as a mounting hole for the horizontal connecting rebar 11 of the wall slab 1.

[0012]

As described above, according to the present invention, the vertical ribs having the vertical stripes inserted therein and the bonding inserts embedded therein are projected at predetermined intervals, and the bolts are provided between the ribs. A pair of semi-precast concrete wall slabs with holes are installed in opposition, the ribs of each wall slab are installed in opposition to the opposing wall slab, and the bolts inserted in the bolt holes are screwed and tightened on the inserts. Thereby, the space between the wall slabs is determined, the wall thickness is easily adjusted by the shape of the ribs, and the construction accuracy is also improved.

A wall body is constructed by casting concrete wall into the space formed between the semi-precast wall slabs, and the wall slab also serves as a wall formwork, which can improve workability. However, at this time, the air in the cast concrete is discharged from the air vent hole at the base end of the vertical ribs, and solid concrete is to be cast, and the reinforcing bars embedded in the wall slab and Together, they form a rigid concrete wall.

According to a second aspect of the present invention, the inverted V-shaped hoop reinforcement is embedded in the semi-precast concrete wall slab, and the projecting end of the hoop reinforcement is wound around the vertical reinforcement of the longitudinal rib of the wall slab. Thus, the rib and the wall slab are integrated.

[Brief description of drawings]

1 is a cross-sectional plan view of a concrete wall constructed by the method of the present invention.

FIG. 2 is an exploded perspective view of the concrete wall construction form.

FIG. 3 is a vertical plan view of a semi-precast concrete wall slab.

FIG. 4 is a cross-sectional plan view cut along the E-line of FIG.

[Explanation of symbols]

 A Semi-precast concrete wall slab B Concrete 1 Vertical wall slab 2 Vertical bar 3 Longitudinal rib 4 Joining insert 5 Air vent hole 6 Wall lateral bar 7 Crack preventive bar 8 Bolt hole 9 Inverted V-shaped hoop bar 10 Bolt 11 Connecting rebar

Claims (2)

[Claims] 1. A vertical wall slab is provided with protruding vertical ribs in which vertical stripes are inserted at predetermined intervals, a joining insert is embedded at the tip of the rib, and an air vent hole is penetrated at the base end. And, a pair of semi-precast concrete wall slabs in which bolt holes are bored in the middle of the adjacent vertical ribs in the wall slab, the vertical ribs provided on the facing surfaces of the wall slabs to each other. While facing opposite to each other,
The joint bolts inserted into the bolt holes of each wall slab are screwed and tightened to the inserts of the opposite wall slab, and concrete is placed in the hollow portion formed between the two half precast concrete wall slabs. Concrete wall construction method. 2. The method for constructing a concrete wall according to claim 1, wherein an inverted V-shaped hoop reinforcement is embedded in the semi-precast concrete wall slab, and a protruding end portion of the hoop reinforcement is wound around the vertical reinforcement.