JP2862771B2 - Construction method of precast concrete foundation - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a precast concrete foundation, and more particularly to a method of constructing a precast concrete foundation for stably laying a precast concrete foundation beam and facilitating connection work. About the method.

[0002]

2. Description of the Related Art Conventionally, when constructing a foundation for a house, generally, the ground of a foundation construction part is excavated and excavated. The formwork was erected, reinforcement was provided in the formwork, and concrete was cast there.

[0003] After the concrete is solidified, the foundation is constructed by removing the formwork.

Further, after removing the mold, the surface of the foundation is subjected to finish treatment with mortar or the like.

[0005]

As described above, when a foundation is constructed from cast-in-place concrete, it takes time and labor to assemble a formwork and cast concrete, and also requires a concrete curing period. Therefore, there is a problem that the construction period is prolonged and the cost is increased.

Therefore, by making the foundation made of precast concrete, the work of assembling the formwork and placing the cast-in-place concrete is omitted, the efficiency of the work at the site is improved, and the burden on the operator is reduced. It is conceivable to shorten the construction period and reduce costs.

When the foundation is made of a plate-like precast concrete, the precast concrete foundation may not be able to stand on its own and may fall down. For this reason, the precast concrete foundations are connected to each other at the corner of the building. It is necessary to maintain the standing state by crossing and fixing using a support member such as a single tube.

However, in order to maintain an upright state using a support member such as a single tube, the support by the support member such as a single tube must be strengthened because the precast concrete foundation is heavy. However, there has been a problem that the time and effort required for such an operation become enormous.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and its object is to simplify the work of building a foundation,
An object of the present invention is to provide a method for constructing a precast concrete foundation capable of stably erecting a precast concrete foundation while shortening the construction period and eliminating labor for maintaining the erect state.

[0010]

In order to achieve the above object, a precast concrete foundation according to the present invention comprises:
A precast concrete foundation construction method for connecting a plate-like precast concrete foundation beam formed to a predetermined length to construct a building foundation, comprising a precast concrete box-like structure constituting a front entrance of a building. Erecting an entrance foundation block at the entrance, and erecting by connecting a precast concrete foundation beam at a position adjacent to the entrance foundation block to the entrance foundation block with reference to the position of the entrance foundation block. And a step of sequentially connecting the adjacent precast concrete foundation beams to the precast concrete foundation beams erected adjacent to the entrance foundation block, and erecting the precast concrete foundation beams.

[0011]

According to the present invention having the above-mentioned structure, the entrance basic block made of cast-for-sale concrete forming the entrance of the building is formed in a box shape, and the box-shaped entrance basic block is erected at the entrance. Thereby, the entrance basic block becomes a state in which it can stand alone.

Therefore, the self-supporting entrance foundation block is first erected, and is supported on the entrance foundation block in order from the precast concrete foundation beam at a position adjacent to the entrance foundation block with reference to the position of the entrance foundation block. By arranging, it becomes possible to stably erect a plate-like foundation beam.

Therefore, it is not necessary to fix the plate-like foundation beam by a large supporting member such as a single pipe for standing and supporting the foundation beam, and the operation of standing the foundation beam becomes easy.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 4 are views showing a method for constructing a precast concrete foundation according to one embodiment of the present invention.

This precast concrete foundation 1
Reference numeral 0 denotes a precast concrete foundation beam 14 that is bridged on a precast concrete foundation bottom 12.
It is constructed by connecting each other in order,
First, roots are cut at predetermined intervals on the ground 16 on which a building is to be constructed, and discarded concrete is poured into the precast concrete base floor 12 where the roots are cut.

Next, an entrance basic block 18 constituting the entrance of the building is erected at the entrance. The entrance base block 18 is made of precast concrete preliminarily formed into a box shape in a factory, and can stand on its own on the base bottom 12 made of precast concrete. Therefore, when the entrance base block 18 is erected, there is no need to use any special support means, and since it has a size occupying a certain area, a stable erected state can be obtained. . In addition, on the upper surface of the entrance base block 18, a not-shown entrance-soil plate made of precast concrete is installed.

As shown in FIG. 2, a substantially U-shaped entrance porch foundation block 22 integrally having an entrance support beam portion 20 is connected to the entrance foundation block 18 outside the building. On the upper surface of the foundation block 22,
An entrance porch plate (not shown) is provided to form an entrance porch. This entrance porch is shown in Figure 2
For example, as shown in FIG. 3, the entrance support beam 24 is formed of precast concrete separately from the entrance porch base block 26, and a substantially U-shaped connection hardware 27 is used at the construction site, as shown in FIG. By linking and integrating the entrance base block 18, the entrance support beam 24, and the entrance porch foundation block 26, the entrance support beam 24 can be made adaptable to changes in the size and type of the entrance sash.

Next, in a state where the entrance basic block 18 is erected, positions adjacent to the entrance basic block 18, for example, positions on both left and right sides of the entrance basic block and positions inside the building, based on the position of the entrance basic block 18. The precast concrete foundation beam 14 is connected to the entrance foundation block 18 and erected. This entrance basic block 18
For example, as shown in FIG. 4, for example, as shown in FIG.
8 is connected to the entrance foundation block 18 and the foundation beam 14 by bolts. In this way, by standing and standing the foundation beam 14 adjacent to the entrance base block 18 on the basis of the precast concrete entrance foundation block 18 which can be stably self-supported, a large-scale single pipe or the like can be obtained. Without using the support means, the foundation beam 14 at the adjacent position can be stably erected, and the erection work can be simplified.

Next, after the foundation beam 14 adjacent to the entrance foundation block 18 is supported by the entrance foundation block 18 and erected, the foundation beam 14 adjacent to the entrance foundation block 18 is supported by the entrance foundation block 18. 14 and supported.

If the adjacent foundation beams 14 are successively supported by the preceding foundation beams 14 and are erected, the foundation 10 can be constructed while maintaining a stable erected state.

In the case where the precast concrete foundation beams 14 are successively connected to each other, the foundation beams 14 are connected to each other by using a steel concrete formwork or a connecting hardware at a corner partway along the way. By leaving
It is possible to configure the corner portion as a support portion for stable standing.

The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention.

For example, in the present embodiment, precast concrete base floors 12 are installed on the ground at predetermined intervals, and a base beam 14 is bridged on the base floor 12. However, the present invention is not limited to this, and it is also possible to install the foundation bottom board 12 continuously and place the foundation beam 14 thereon.

[0025]

As described above, in the present invention,
By forming an entrance base block made of sold cast concrete that constitutes the entrance of the building into a box shape, and standing this box-shaped entrance foundation block at the entrance,
The entrance foundation block can be made to stand alone by itself, and the self-standing entrance foundation block is first erected, and the entrance is made in order from the precast concrete foundation beam at a position adjacent to the entrance foundation block based on the position of the entrance foundation block. By standing on the foundation block,
There is an effect that the plate-like foundation beam can be stably erected.

Therefore, it is not necessary to fix the plate-like foundation beam by a large supporting member such as a single tube for standing and supporting the foundation beam, and there is an effect that the standing work of the foundation beam can be easily performed.

[Brief description of the drawings]

FIG. 1 is a plan view of a foundation using a method for constructing a precast concrete foundation according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a joint state between the entrance foundation block of FIG. 1 and a foundation beam at an adjacent position.

FIG. 3 is an enlarged plan view showing another joint state between the entrance foundation block and an adjacent foundation beam.

FIG. 4 is an enlarged perspective view showing a joint between the entrance foundation block and the foundation beam in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Foundation 12 Precast concrete foundation bottom 14 Precast concrete foundation beam 16 Ground 18 Entrance foundation block 28 Connecting hardware

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E02D 27/02 E02D 27/01 101

Claims (1)

(57) [Claims] 1. A method for constructing a precast concrete foundation for connecting a plate-like precast concrete foundation beam formed to a predetermined length to construct a foundation of a building, wherein the precast concrete forming an entrance of the building is provided. Erecting a box-shaped entrance foundation block made of steel at the entrance, and connecting the precast concrete foundation beam at a position adjacent to the entrance foundation block to the entrance foundation block with reference to the position of the entrance foundation block. And erecting the precast concrete foundation beam, which is erected adjacent to the entrance foundation block, and sequentially connecting the adjacent precast concrete foundation beam. Construction method of precast concrete foundation.