JPH05132956A - Prefabrication foundation - Google Patents

Abstract

PURPOSE:To reduce the construction period, by erecting rising walls on a base block as a unit, assembling foundation blocks having I, L, T and cross-shapes in the plane view to show in a required form and laying down these, and unifying respective blocks with joint bolts. CONSTITUTION:Rising walls 15 are erected on a base block 14, as a unified form. A plurality of foundation blocks having rectangular 10A, 10B, 10C, L- shaped 11, T-shaped 12, and cross shaped 13 forms in the plane view are made by concrete. Next, respective blocks are assembled and laid down to take a required form on a base concrete 17. The respective concretes are unified by joint members like bolts and nuts. In this way, a high quality foundation can be constructed in a short time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a prefabricated foundation which is mainly used as a foundation for a wooden or steel frame house.

[0002]

2. Description of the Related Art Conventionally, when constructing a foundation for a wooden or steel-framed house, as shown in FIG. 9, a foundation stone 1 is staked and laid, and a base concrete 2 is placed on it. , Formwork 3 is assembled on this base concrete 2,
After incorporating the reinforcing bars 4 in the mold 3, the concrete 5 is poured and cured for a certain period of time and then demolded, and the surface of the concrete 5 is finished with decorative mortar.

[0003]

In the conventional foundation as described above, since all the steps are carried out on site, many templates and materials for assembling them are required. In addition, there are many parts that can not be reused after use, there are many on-site construction processes, and more work is required and the construction period is longer because of the reason that it cannot proceed to the next process unless a certain concrete curing period has passed. There was a problem such as a long time.

In view of the above conventional problems, the present invention eliminates the generation of waste materials at the site to conserve resources, shortens the period required for foundation construction, and reduces the number of manpower to be extended. This is the purpose.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned conventional problems and achieve the intended purpose, the gist of the present invention is that a standing wall portion is integrally projected on a bottom plate portion, Use a plurality of basic blocks that have a cruciform, T-shaped, L-shaped, or straight planar shape, combine them into the desired shape, and arrange them on the cast-in-place concrete. It exists in a prefabricated foundation that is characterized by being integrated into one.

[0006]

The prefabricated foundation of the present invention is constructed at the construction site by the steps of grooving, slag laying, base concrete placing, foundation block installation and connection, and the work of assembling, demolding and surface finishing the formwork. Is unnecessary, and because concrete can be poured using only base concrete, work waiting time for curing is unnecessary.

The basic block is standardized in a fixed form,
It can be mass-produced at the factory.

[0008]

EXAMPLE An example of the present invention will be described with reference to FIGS.

FIG. 1 shows a plan view of an example of a foundation constructed by connecting a large number of base blocks. A long straight block 10A, a middle straight block 10B, and a short straight block 10C whose planes are straight. , L-shaped blocks 11 each having an L-shaped flat surface, T-shaped blocks 12 each having a T-shaped flat surface, and J-shaped blocks 13 each having a cross-shaped planar surface are arranged at the same height, and adjacent blocks are connected to each other. Then configured. As shown in FIG. 2, each block has a wide base 14 at the bottom,
The standing wall portion 15 is integrally formed thereon.

To construct this foundation, as shown in FIG. 2, a cobblestone 16 is laid at the lowermost portion and solidified, a base concrete 17 is cast on it, and after waiting for its solidification, a mortar layer 17a is formed on its upper surface. And the blocks adjacent to each other are connected to each other.

When connecting the blocks, the blocks shown in FIGS.
As shown in FIG. 3, a recess 18 is formed on the bottom plate 14 at the end, a bolt insertion hole 20 is opened from the recess 18 to the block end face 19, and a connecting bolt 21 is inserted into the bolt insertion hole 20. Then, the nuts 22 are tightened to connect the adjacent blocks.

In addition to the above, the connection between the blocks can be achieved by embedding an anchor nut 23 in the end side surface of the bottom plate portion 14 and fixing the connection plate 24 to the bolt 25 as shown in FIGS. Good.

Furthermore, as shown in FIGS. 7 and 8, a plate 26 for connection is provided on the joint end surface of the block to connect the anchor bars 2.
Insert-mold with 7 and then plate 2
The connection bolts 28 may be used to stop the spaces 6 and 26.

In addition to these connecting methods, a continuous steel rod 29 is inserted into a linear portion which is linear in the longitudinal direction as shown by a phantom line in FIG. 1, and a nut 30 is screwed into the end portion. However, the whole may be tightened.

[0015]

As described above, in the prefabricated block of the present invention, the concrete foundation is constructed by arranging and connecting the foundation blocks of various shapes so that the concrete foundation can be used in the conventional construction site. Processes such as mold assembly, curing, demolding, and surface finishing are not required, and it is possible to construct in an extremely short time and with a small number of extension workers, which eliminates the need for templates and materials for assembling them. Recycling has been achieved, and the blocks can be mass-produced by standardizing them according to building standards, and high quality products can be manufactured at low cost using molds, resulting in improved quality and cost reduction. There are effects such as being done.

[Brief description of drawings]

FIG. 1 is a plan view showing a concrete foundation according to an embodiment of the present invention.

FIG. 2 is an enlarged sectional view taken along line AA in FIG.

FIG. 3 is a side view showing an example of a connection structure between blocks.

FIG. 4 is a sectional view taken along line BB in FIG.

FIG. 5 is a side view showing another example of a connection structure between blocks.

FIG. 6 is a sectional view taken along line CC in FIG.

FIG. 7 is an end view of blocks for explaining still another example of the connection structure between blocks.

FIG. 8 is a partial vertical sectional front view of the above connection state.

FIG. 9 is a sectional view showing an example of construction of a conventional foundation.

[Explanation of symbols]

 10A Long straight type block 10B Medium straight type block 10C Short straight type block 11 L type block 12 T type block 13 Ten type block 14 Bottom plate part 15 Standing wall part 16 Kuriishi 17 Base concrete 17a Mortar layer 18 Recessed part 19 End face 20 Bolt insertion hole 21, 28 Connection bolt 22, 30 Nut 23 Anchor nut 24 Connection plate 25 Bolt 26 Plate 27 Anchor bar 29 Steel rod

Claims (1)

[Claims] 1. A combination of a standing wall portion integrally formed on a bottom plate portion with a desired shape by using a plurality of foundation blocks having a cross shape, a T shape, an L shape, or a straight shape in a plan view. A prefabricated foundation that is characterized by arranging it on cast-in-place concrete and connecting the foundation blocks with a connecting material.