JPH0762672A - Method for constructing foundation of precast concrete - Google Patents

Abstract

PURPOSE:To erect a foundation of precast concrete in a stable manner and to eliminate the work of maintaining an erected condition, while construction work of a foundation is simplified and construction period is shortened. CONSTITUTION:Plate-shaped footing beams 14 of precast concrete having a predetermined length are connected together to build a foundation of a building. In this case, a box-shaped entrance hall foundation block 18 made of precast concrete for constituting an entrance hall of a building is erected in an entrance hall. A footing beam 14 of precast concrete adjacent to the block 18 is erected with reference to the position of the block 18 so as to be connected to the block 18. And footing beams 14 of precast concrete are successively and adjacently connected to the footing beam 14 erected adjacent to the entrance hall block 18.

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 in particular, a construction of a precast concrete foundation for stably establishing a precast concrete foundation beam and facilitating connection work. Regarding the method.

[0002]

2. Description of the Related Art Generally, in the case of constructing a foundation for a house, excavation of the ground of the foundation construction portion is carried out, root cutting is performed, and gravel or the like is spread over the portion where the root cutting is carried out, followed by concrete pouring. The formwork of No. was erected, the reinforcement was given in the formwork, and the concrete was poured there.

After the concrete has solidified, the form is removed to construct the foundation.

Further, after removing the mold, the surface of the foundation is finished with mortar or the like.

[0005]

As described above, when constructing a foundation with cast-in-place concrete, it takes time and labor for assembling the formwork and placing the concrete, and a concrete curing period is required. Therefore, there is a problem that the construction period is prolonged and the cost is increased.

[0006] Therefore, by making the foundation from precast concrete, the work of assembling the formwork and placing the concrete on site is omitted, the efficiency of site work is improved, and the burden on the operator is reduced, and It is possible to reduce the construction period and cost.

By the way, if the foundation is made of plate-shaped precast concrete as described above, the precast concrete foundation may not be able to stand on its own and may fall down. It is necessary to maintain the standing state by intersecting and fixing with a supporting member such as a single pipe.

However, in order to maintain the standing condition by using a supporting member such as a single pipe, since the foundation made of precast concrete has a large weight, the support by the supporting member such as a single pipe must be strong. However, there was a problem that the effort was great.

The present invention has been made to solve the above problems, and its purpose is to simplify the work of constructing a foundation,
It is an object of the present invention to provide a method for constructing a precast concrete foundation, which can shorten the construction period, achieve stable erecting of the precast concrete foundation, and eliminate the work for maintaining the standing state.

[0010]

In order to achieve the above object, the precast concrete foundation according to the present invention comprises:
A method of constructing a precast concrete foundation that constructs a building foundation by connecting plate-shaped precast concrete foundation beams that have been formed to a specified length, and is a box-shaped precast concrete box that constitutes the entrance of the building. A step of standing the entrance foundation block on the entrance part, and a step of 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 adjacent precast concrete foundation beams to a precast concrete foundation beam standing adjacent to the entrance foundation block.

[0011]

According to the present invention having the above-described structure, the entrance base block made of hot-cast concrete that forms the entrance of the building is formed in a box shape, and the box-shaped entrance base block is erected at the entrance. As a result, the entrance basic block can stand alone.

Therefore, the self-supporting entrance foundation block is first erected, and the entrance foundation block is supported in order from the precast concrete foundation beam adjacent to the entrance foundation block. By installing them, it becomes possible to stably erect the plate-shaped foundation beams.

Therefore, it is not necessary to fix the plate-shaped foundation beam by means of a large-scale supporting member such as a single pipe for supporting the plate-shaped foundation beam, and the foundation beam can be easily erected.

[0014]

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

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

This precast concrete foundation 1
0 is a precast concrete foundation beam 14 that is laid over a precast concrete foundation base 12.
It is constructed by connecting each other in order,
First, root cutting is performed at a predetermined interval on the ground 16 on which a building is to be constructed, and discarded concrete is placed on the installation portion of the precast concrete base floor 12 where the root cutting has been performed.

Next, the entrance basic block 18 which constitutes the entrance of the building is erected on the entrance. This entrance foundation block 18 is made of precast concrete that is preliminarily formed into a box shape in a factory, and can stand on a foundation bottom plate 12 made of precast concrete. Therefore, when the entrance foundation block 18 is erected, it is not necessary to use a special supporting means, and the size is such that it occupies an area of a certain size, so that a stable erected state can be obtained. . On the upper surface of the entrance foundation block 18, a not-shown entrance dirt plate made of precast concrete is installed.

Further, as shown in FIG. 2, a substantially U-shaped entrance pouch foundation block 22 integrally having an entrance support beam portion 20 is connected to a position outside the building of the entrance foundation block 18, and the entrance pouch foundation block 22 is connected. On the upper surface of the basic block 22,
An entrance porch plate (not shown) is installed to form the entrance porch. This entrance pouch is shown in Figure 2.
Not limited to the above state, as shown in FIG. 3, for example, the entrance support beam 24 is formed of precast concrete separately from the entrance pouch foundation block 26, and using a substantially U-shaped connecting hardware 27 at the construction site, By connecting and integrating the entrance foundation block 18, the entrance support beam 24, and the entrance pouch foundation block 26, it is possible to adapt the entrance support beam 24 to changes in the size, type, etc. of the entrance sash.

Next, in a state where the entrance basic block 18 is erected, a position adjacent to the entrance basic block 18 with reference to the position of the entrance basic block 18, for example, both left and right positions of the entrance basic block and positions inside the building. The precast concrete foundation beam 14 is connected to the entrance foundation block 18 and erected. This entrance basic block 18
The connection of the foundation beam 14 to the connection bracket 2 is performed, for example, as shown in FIG. 4, by covering the upper surface of the connection intersection of the entrance foundation block 18 and the foundation beam 14 with a substantially T-shaped connection hardware 28.
8 and the entrance foundation block 18 and foundation beam 14 are connected by bolts. In this way, the entrance foundation block 18 made of precast concrete which can be stably self-supporting is used as a reference, and the foundation beams 14 adjacent to the entrance foundation block 18 are supported and erected, so that a large-scale single pipe or the like is not required. The foundation beams 14 at the adjacent positions can be stably erected without using a supporting means, and the erection work can be simplified.

Next, after the foundation beam 14 adjacent to the entrance foundation block 18 is erected while being supported by the entrance foundation block 18, the foundation beam 14 adjacent to the foundation beam 14 is supported by the entrance foundation block 18. 14 to stand upright.

Then, if the foundation beams 14 at the adjacent positions are sequentially supported by the preceding foundation beam 14 and are erected, the foundation 10 can be constructed while maintaining a stable erected state.

When the precast concrete foundation beams 14 are to be successively connected, the foundation beams 14 are connected to each other using a steel concrete formwork or a connecting metal at a corner portion in the middle. By putting
It is possible to configure the corner portion as a support portion for stable standing.

The present invention is not limited to the above embodiments, but various modifications can be made within the scope of the gist of the present invention.

For example, in the present embodiment, the foundation bottom plates 12 made of precast concrete are installed on the ground at predetermined intervals, and the foundation beams 14 are bridged over the foundation bottom plates 12. Not limited to this, it is also possible to continuously install the base bottom plate 12 and mount the base beam 14 thereon.

[0025]

As described above, according to the present invention,
By forming an entrance foundation block made of hot-selling cast concrete that constitutes the entrance to the building into a box shape, and erected this box-shaped entrance foundation block in the entrance area,
The entrance foundation block can be self-supported by itself, and this self-supporting entrance foundation block is first erected, and based on the position of this entrance foundation block, the precast concrete foundation beam at the position adjacent to the entrance foundation block is the entrance in order. By supporting it upright on the foundation block,
There is an effect that a plate-shaped foundation beam can be stably erected.

Therefore, there is no need for fixing by a large-scale supporting member such as a single pipe for vertically supporting the plate-shaped foundation beam, and there is an effect that the foundation beam can be easily erected.

[Brief description of 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 joined state of the entrance foundation block of FIG. 1 and foundation beams at adjacent positions.

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

FIG. 4 is an enlarged perspective view showing a joint portion between the entrance foundation block and foundation beam of FIG.

[Explanation of Codes] 10 Foundation 12 Precast concrete foundation bottom 14 Precast concrete foundation beam 16 Ground 18 Entrance foundation block 28 Connected hardware

Claims (1)

[Claims] 1. A method of constructing a precast concrete foundation for constructing a building foundation by connecting plate-shaped precast concrete foundation beams formed to a predetermined length, the precast concrete constituting a doorway portion of the building. A step of standing up a box-shaped entrance basic block made in the entrance part, and based on the position of the entrance basic block, connect a precast concrete foundation beam at a position adjacent to the entrance basic block to the entrance basic block. And a step of vertically connecting the precast concrete foundation beams that are adjacent to the entrance foundation block to the precast concrete foundation beams that are sequentially adjacent to the entrance foundation block. Construction method of precast concrete foundation.