JPH01203545A - Building of wall member for structure body - Google Patents

Abstract

PURPOSE:To make it possible to build a wall member for a structure body without using particular construction machines, equipment or large vehicles, by placing ladder- shaped reinforcing bar materials vertically and horizontally among concrete blocks which are formed in shapes suitable for the reinforcing bars. CONSTITUTION:A concrete block 1 for placement of concrete is formed with two rectangular plate-shaped bodies 3, facing each other, and a connecting plate 4 that is connected at its both ends to the plate-shaped bodies 3, and a U-shape is formed with these members. The plate-shaped bodies 3 are further fixed in the vicinity of an opening of the U-shape with a column-shaped piece 5, which is formed with two curves made respectively on the upper and lower edges, and respective centers of the curves are at the points respectively one-third of the distance from the upper and lower edges of the plank-shaped bodies 3. Another concrete block 2 for placement of concrete is formed with the two plate-shaped bodies 3, facing each other, and the two column-shaped pieces 5, which are fixed at their both ends to the plate-shaped bodies 3 at the right and left portions of the plate-shaped bodies 3. Then, the concrete blocks 1 and 2 are heaped up in an appropriate combination, with ladder-shaped reinforcing bars arranged inside the concrete blocks and light-weight foaming concrete is poured therein.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method of constructing a wall that is a main structural part of a low-rise load-bearing wall structure for residential or commercial use.

[Prior Art] Conventionally, as a method for constructing walls of buildings, vertical bending reinforcing bars and longitudinal and horizontal This is done by pouring ordinary concrete into a hollow wall with shear reinforcing bars placed.

[Problems to be solved by the invention] However, conventional reinforced concrete construction and steel frame construction require heavy industrial machinery and large vehicles such as pile drivers, mixer trucks, and pump trucks at the work site, and also require the installation of external scaffolding. , it was essential to form a formwork.

For this reason, it has been extremely difficult to construct concrete buildings on narrow sites where scaffolding cannot be erected on the outside, or in alley areas where large vehicles cannot enter.

Furthermore, when pouring ordinary concrete into a hollow wall, the concrete would partially clog the hollow, so if a vibrator was used to pour the concrete, the block would be damaged, forcing the work to be interrupted.

Furthermore, it is possible to use lightweight foamed concrete, which has relatively low compressive strength and shear strength, but is lightweight and has good heat insulation properties, but this is not possible because there is no effective method for shear reinforcement in the longitudinal and lateral directions. It was possible.

In addition, for longitudinal and lateral shear reinforcement, since the longitudinal compressive elastic strain of lightweight foam concrete is significantly larger than that of ordinary concrete, a considerable amount of tensile reinforcing steel is required to resist the tensile force generated with bending stress. This required a lot of work, which was disadvantageous in terms of work efficiency.

Therefore, the present invention does not require special construction machines, equipment, large vehicles, lifting machines, etc., and can easily construct concrete buildings even on narrow sites, at low cost, and at the same time, construct strong structures with excellent shear strength. The purpose of the present invention is to economically and efficiently construct a wall body that is lightweight, has excellent heat insulation properties, and has the required structural strength by using lightweight foamed concrete.

[Means for Solving the Problem] As a result of intensive research to achieve the above object, the present inventors have developed a concrete structure in which vertical and horizontal reinforcing bars are shaped like a ladder and formed into a shape corresponding to the ladder-shaped reinforcement bars. The present invention was completed based on the knowledge that a method for constructing walls of a building that solves the above-mentioned drawbacks can be obtained by extending the walls between the blocks.

In other words, rectangular plates facing each other are formed into a U-shape by connecting plates, and furthermore, there is a U-shape near the opening, and the center part of the U-shape is approximately 1/3 from the top and bottom of the plate. A concrete block for concrete pouring, which is made by fixing each plate-like body with a columnar piece.

And the rectangular plate-like bodies facing each other are U-shaped, and the center part of the U-shape is about 1/3 from the top and bottom of the plate-like body.
Concrete blocks for concrete pouring, which are made by fixing each plate-like body on the left and right sides using letter-shaped columnar pieces, are appropriately combined and stacked one after another, and the vertical and horizontal directions formed between a large number of concrete blocks for concrete pouring are formed between a large number of concrete blocks for concrete pouring. This is a method for constructing a wall of a building, which is characterized by placing or inserting ladder-shaped reinforcing members in the spaces where the walls are connected, and injecting lightweight foamed concrete from the openings of the cavities.

In other words, in order to effectively achieve shear reinforcement, the hardened lightweight foam concrete is sufficiently restrained by arranging and assembling vertical ladder-shaped reinforcements and horizontal ladder-shaped reinforcements, and by utilizing the mutual restraint of these two reinforcements. In addition, the compressive force that acts on the compressive edge of the wall end during bending stress or shear stress is borne by the plate-like part of the concrete block, which has high compressive strength and the same compressive elastic modulus as ordinary concrete. It is accomplished by doing.

The shape of a concrete block consists of rectangular plates that face each other and are formed into a U-shape by connecting plates, and a U-shape is formed near the opening, and the center of the U-shape is formed from the top and bottom of the plates. Each plate is fixed with a columnar piece that is about 1/3 of its size (see Figure 2), and the opposing rectangular plates are shaped like a U-shape, and the center of the U-shape is shaped like a plate. Approximately 1 each from the top and bottom of the body
Each plate member is fixed on the left and right sides using U-shaped columnar pieces having a size of 1/3 (see Fig. 3), and these concrete blocks for concrete pouring are appropriately combined and stacked one after another.

Moreover, the shape of the columnar piece may be one in which only one of the upper and lower sides is U-shaped, or one in which a depression other than the U-shape is provided.

It is desirable that the vertical and horizontal ladder-shaped reinforcements have some degree of strength, and for example, those made of reinforcing bars, synthetic resin, etc. can be used.

Although the spacing between the ladder-like bars is determined as appropriate, the vertical ladder-like bars can be reliably arranged by providing placement openings for the vertical ladder-like bars in the horizontal ladder-like bars.

The placement and assembly of the horizontal ladder-shaped reinforcements is parallel to the masonry of the concrete blocks, and each time a block is laid, the horizontal ladder-shaped reinforcements are placed on top of the U-shaped column pieces of the block. I'm going to lay it down.

At this time, U-shaped reinforcing bars are inserted into the vertical bending reinforcing bars that have been fixed in advance to the foundation or beam at the end of the wall or at the corner of the wall, and the vertical bending reinforcement is applied at a predetermined position. Bind with reinforcement 1
．． The strength can also be strengthened by overlapping and splicing the horizontal ladder-shaped reinforcement of the present invention on this U-shaped reinforcement.

The arrangement and assembly of the vertical ladder-shaped reinforcements is based on the masonry of the concrete blocks and the arrangement and assembly of the horizontal ladder-shaped reinforcements.
Vertical ladder-shaped reinforcing bars are installed in each of a plurality of pre-arranged transverse bending reinforcing bars from a predetermined hollow part at the top of the hollow wall of the concrete block that has been assembled after completion of assembly. This is done by inserting it into the opening.

These vertical and horizontal ladder-shaped reinforcements are used for the lower foundation or
It can be fixed and strengthened by welding to concrete anchors in the ceiling, etc. or reinforcing reinforcing bars above (see Figures 1, 4, and 5).

In this way, the vertical and horizontal ladder-shaped reinforcing bars, which are firmly placed and assembled at predetermined positions, are arranged in a grid pattern on the front and back sides of the wall, and are interconnected. Therefore, the hardened lightweight foam concrete is sufficiently restrained and its shear reinforcement effect is extremely large, to the extent that the "shear reinforcement study formula" for ordinary concrete members can be applied mutatis mutandis.

Furthermore, the shapes of the ladder-shaped reinforcing bars and the concrete blocks are not limited to the above-mentioned shapes; if it is desired to provide a curved shape in the shape of the wall, the ladder-shaped reinforcing bars and the corresponding blocks may also be provided with a curved line. , the shape of the wall can be flexibly provided.

The lightweight foamed concrete used in the present invention is composed of medium aggregate (aggregate diameter 0.25 to 1.0 C!11), fine aggregate, Portland cement, foaming agent, fresh water and other materials, Lightweight aggregates are usually used for medium and fine aggregates.

Its air-dried bulk specific gravity is 0.6 to 1.6.4 weeks, and its compressive strength is 30
kg/aJ ~200kg/cJ, preferably 80-/
It has properties in the range of d to 120 kg/aJ, and is selected and used depending on the required strength of the wall.

Using a small Roncrete pump, lightweight foamed concrete with good workability manufactured from the above-mentioned materials is used to place vertical bending reinforcing bars and vertical and horizontal ladder-shaped bars.
Pour the concrete from the desired position in the uppermost part of the hollow wall of the assembled concrete block.

The poured fresh concrete fills each section of the hollow wall without the need for artificial vibration or compaction.

Filled fresh concrete expands in volume over time due to the chemical reaction between the foaming agent and Portland cement.

Due to this volumetric expansion, it is closely bonded and integrated with the inner surface of the concrete block.

Moreover, since the concrete block has a shape that does not impair the continuity of the cross section of the material to be filled, the hardened lightweight foamed concrete has reliable material strength.

[Effects] The present invention does not require special construction machinery, equipment, large vehicles, lifting machines, etc., and can easily construct concrete buildings even on narrow sites, and can construct strong structures with excellent shear strength at low cost. In addition, by using lightweight foamed concrete, it is possible to economically and efficiently construct a wall body that is lightweight, has excellent heat insulation and sound insulation properties, and has the required structural strength.

Note that similar working effects can be obtained when the present invention is applied to a concrete block for concrete pouring, a beam main reinforcement, a ladder-shaped stirrup, and a beam member made of lightweight foamed concrete.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing one embodiment of the present invention, FIGS. 2 and 3 are perspective views of a block used in the present invention, and FIGS. 4 and 5 are reinforcing bars for the ceiling. A diagram showing a connected state. Top, 2 ---- Concrete block for concrete pouring 3.3'... Plate body 4... Connecting plate 5... Column piece 6...・・Horizontal ladder-shaped reinforcement 7 ・・・・Arrangement opening 8 ・・Vertical ladder-shaped reinforcement Patent applicant Nippon Iton Kogyo Co., Ltd. Toho Kochi Seiji

Claims (2)

[Claims] (1) Opposing rectangular plates are formed into a U-shape by connecting plates, and furthermore, a U-shape is formed near the opening, and the center part of the U-shape is about 1/2 inch from the top and bottom of the plates. A concrete block for pouring concrete made by fixing each plate-like body with a columnar piece 3, and a rectangular plate-like body facing each other are U.
A concrete block for concrete pouring is made by fixing each plate-like body on the left and right sides using a U-shaped columnar piece that is shaped like a U-shape and whose center portion is about 1/3 of the top and bottom of the plate-like body. Ladder-shaped reinforcing bars are placed or inserted into the vertically and horizontally connecting spaces formed between the large number of concrete blocks for concrete pouring, and the lightweight foamed concrete is poured through the cavity opening. A method for constructing walls of a building, characterized by injecting. (2) When placing and inserting ladder-shaped reinforcing bars, the horizontal placement is parallel to the masonry of concrete blocks, and the vertical placement is after the concrete blocks have been laid to a specified height. Claim 1, characterized in that the concrete block is inserted from a predetermined position of a cavity opening into an arrangement opening provided in advance in a lateral ladder-shaped reinforcing member.
Method of constructing the wall of the mentioned building.