JPH0544220A - Construction of base for structure such as housing - Google Patents

Abstract

PURPOSE:To reduce the cost of construction and shorten the period of construction by making operations for assembling formwork and concrete placing on site easier and simpler when constructing a base for structure such as housing. CONSTITUTION:A given number of the units of a base structure 1 are produced in factory and set on a leveling concrete 6 at a given interval to marked lines. Reinforcing bars 5 projected from the ends of base structures 1 are connected with each other and formworks 2 and 3 are assembled on the inside and outside between the base structures 1. Concrete 12 is placed into the formworks 2 and 3 to connect the structures 1 in order to construct the mat foundation 11.

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 foundation for buildings such as houses.

[0002]

2. Description of the Related Art At present, when constructing a foundation for a house or the like, after surveying, as shown in FIG. 5, a root a is excavated at the site, that is, a groove b for a foundation for a house is excavated, After this is compacted, waste concrete c is poured, and the sumi is made out of it. The inner form d is raised according to the sumi line (not shown), the rebar e is assembled, and then the outer form is formed. After putting in f, the entire centering is performed and both the inner and outer molds d, f
Is fixed with a form holding metal fitting g called home tie, and concrete h is placed and the bible is applied (consolidation).
I am trying to do.

That is, all of the above-mentioned conventional foundation construction methods are on-site work, and in addition,
Negori (groove excavation), crawling compaction, pouring concrete,
Hosumi out, inner formwork inset, g rebar assembly, c-outer formwork inset, assembly and fixing after centering, reconcrete placement, nubile, le formwork dismantling, backfilling, rolling pressure, etc. Thirteen
You have to carry out the process of.

[0004]

However, in the above-mentioned conventional construction method, all the steps are on-site work and there are various work steps, so the work is affected by the weather, and the work of each step Each of them is carried out by a professional engineer, but as in recent years, due to the lack of manpower for these professionals, the construction period becomes long and the construction cost becomes expensive. There is.

The present invention has been made in view of the above problems of the above-mentioned conventional construction method. The purpose of the present invention is to shorten the construction period by reducing the on-site work. The purpose is to reduce the cost and to obtain a building foundation that has good strength and appearance.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is a method for constructing a foundation for a building such as a house, in which a concrete is placed in a groove for foundation construction excavated in the ground in advance to construct a foundation. In the above, in the factory, the required amount of basic structure was produced at the factory, these were installed on the concrete in line with the sumi line, and after connecting the respective reinforcing bars projecting from the connection side end face of each basic structure to each other, the connection The present invention provides a method for constructing a foundation for a building such as a house, characterized in that the construction of the foundation is completed by assembling a formwork at a location and splicing concrete.

[0007]

[Function] After disposing the required amount of the basic structure produced in the factory on the discarded concrete and fastening the reinforcing bars protruding from their ends to each other, assemble and fix the formwork at the connection points between the basic structures. However, since the formwork is held at a predetermined interval by abutting the inner and outer side surfaces of the adjacent base constructions, the formwork is a known pin system or a simple holder such as a bolt. Can be assembled using
Therefore, the dismantling of the formwork becomes easy.

After assembling the formwork, concrete is spliced into the formwork, and after the concrete is solidified, the formwork is disassembled to complete the construction of the foundation. The foundation thus constructed is
Each foundation structure is factory-manufactured with a formwork, and since each foundation structure is spliced with concrete using a formwork, the surface is smooth and the appearance is beautiful. Therefore, waist mortar and hali work are unnecessary.

Further, since both ends of the reinforcing bar arranged in each foundation structure are extended outward from the connection-side end surface of the foundation structure and are fastened to each other at the concrete joint portion,
It will be possible to build a foundation with good strength and appearance in a short period of time.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 (A) and 1 (B) respectively show the substructure 1 with the required unit quantity used for carrying out the method of the present invention.
Fig. 1 (B) is a perspective view of Fig. 1 and a plan view showing a state in which the foundation structures 1 are jointed to each other by using the molds 2, 3 ... made of steel or the like, as shown in Fig. 1 (B). By the same time as the above-mentioned known procedure in the foundation construction method, until the process step, root excavation for excavating the trench 4 for foundation in the surveying ground, compaction of the bottom of the trench 4 and pouring of waste concrete not shown. This means that the installation process is being performed.

The basic structure 1 is manufactured in advance in a factory. For this production, a steel formwork (not shown) is fixed to the frame, a plurality of required reinforcing bars 5 ... The concrete 1c is placed in a state in which the required length is projected from the end faces 1a, 1b of the foundation structure 1 in the length direction, so that the concrete 1c is formed into a shape suitable for a foundation, for example, a substantially T-shaped side surface. ..

As shown in FIG. 2, the foundation structure 1 is prepared by applying adjustment mortar 6a on the waste concrete 6 applied to the bottom of the groove 4 for foundation, and forming it beforehand by smeating (not shown). Arrange as shown in FIG. When arranging each of the substructures 1, 1, ... In a straight line according to the length method, each end line should be straight as shown on the right side of FIG. 1 (B). 1a and 1b are opposed to each other, and their end lines 1a and 1b
Each protruding end portion 5a of the reinforcing bar 5 ...
The base structures are spaced apart by a length of 5b, and the projecting end portions 5a and 5b of the reinforcing bars 5 are fastened with a wire 6 or welding, and a plurality of required vertical streaks 7 are connected thereto. Assemble and fix.

Further, when the two respective substructures 1, 1 ... Are arranged in a substantially T-shape in a plane, the left and right substructures 1, 1 are arranged as shown on the left side of FIG. 1 (B). After arranging in the same manner as in the case of the above-mentioned straight splicing, fastening both projecting end portions 5a and 5b of the reinforcing bars 5 and 5 and assembling the longitudinal bars 7, ... Another foundation structure 1 is arranged, and the protruding ends 5a of the reinforcing bars 5 are fastened to the protruding ends 5a and 5b described above.

At the straight joint splicing point A shown on the right side of FIG. 1 (B), the same as shown in FIG. 3 (A) formed so as to have an inner surface shape conforming to the outer surface shape of the foundation structure 1. Forming molds 2 and 2 are arranged inside and outside of the splicing point A, and the ends of the forming molds 2 and 2 are connected to both foundation structures 1 and 1.
The side surfaces of the end portions of the above are abutted in a superposed state, and the both are assembled and fixed by bolts or holding members 8, 8 ... As a result, a concrete pouring space 9 having a cross section having the same shape as that of the foundation structure 1 is formed by the respective end surfaces 1a, 1b of both foundation structures 1, 1 and the inner surfaces of both formwork 2, 2.

At the splicing point B having a substantially T-shaped plane as shown on the left side of FIG. 1 (B), a mold 2 similar to the one described above is arranged on the outside thereof, and the left and right corners inside the frame 2 are arranged. , Fig. 3 (B)
As shown in FIG. 5, a pair of molds 3 and 3 whose inner surfaces are formed at right angles are arranged, and the respective molds 2, 3 and 3 are assembled and fixed by the holders 8 ...

Therefore, in FIG. 1 (B), by the respective end faces 1b, 1a of the left and right foundation structures 1, 1 and the respective end faces 1a of the lower foundation structure 1 and the inner faces of the respective molds 2, 3, 3 described above, A concrete pouring space 10 having a substantially T-shaped plan and a cross section having the same shape as that of the foundation structure 1 is formed.

Next, concrete 12 is placed in each of the concrete placing spaces 9 and 10 in the formwork 2, 2 and 2, 3 and 3.
If you set up, each foundation structure 1, 1, ...
Construction of the solid foundation 11 as illustrated in FIG. 4 can be completed. Further, the cast concrete is solidified, each formwork 2, 3 is dismantled, and this is removed to form the foundation 11
The entire work is completed by backfilling the foundation grooves 4 on both sides and rolling.

In FIG. 4, C indicates a portion where the foundation structures 1 and 1 are spliced at a right angle in a substantially L-shaped plane. As shown in FIG. 3 (B), the inside of the formwork for connecting the foundation structures 1 and 1 at their ends at a right angle is used on the inside, but on both sides at a right angle. , And both foundation structures 1,
The one formed in a shape that fits the outer surface of one end is used. At this time, the projecting end portions 5a and 5b of the reinforcing bars 5 of the two foundation structures 1 and 1 are fastened in a mutually orthogonal state to assemble the vertical bars.

[0019]

As described above, according to the method of enforcing a residential foundation according to the present invention, the required amount of basic structure is produced in the factory and these are spliced with concrete on site, so The work is much less than the conventional construction method, and it is sufficient to assemble the formwork only at the joints of each foundation structure, so the number is reduced, and the foundation structure is used as an inner holding member of the formwork. Because it is possible, it can be assembled easily and with high accuracy by using a simple pin system or bolts on the form holder, so the construction period can be greatly shortened and the cost can be reduced compared to the conventional construction method. . Further, since the mold frame is easily assembled, the carpenter's carpenter is not required, and the labor shortage can be solved.

[Brief description of drawings]

1 (A) and 1 (B) are perspective views each showing a partial cutout of a basic structure of a required unit amount for constructing a basic structure for a residential structure according to the present invention, and a basic structure for a residential structure, etc. FIG. 3 is a plan view showing a state in which the construction and construction of is being performed.

FIG. 2 is a cross-sectional view taken along the line AA in FIG.

3 (A) and 3 (B) are perspective views of a formwork used when the foundation constructions are spliced in a straight line, and the foundation constructions are spliced in a substantially planar T shape and a substantially planar L shape. It is a perspective view of a formwork used as an inner frame in the case of doing.

FIG. 4 is a plan view showing an example of a foundation for a building such as a house constructed by the construction method of the present invention.

FIG. 5 is a vertical cross-sectional side view showing a process of constructing a foundation for a building such as a house by a conventional construction method.

[Explanation of symbols]

 1 Foundation structure 2 Formwork 3 Formwork 4 Groove for foundation 5 Reinforcing bar 12 Concrete

Claims (1)

[Claims] 1. A method of constructing a foundation for a building such as a house, in which a concrete is disposed in a trench for foundation construction excavated in the ground in advance to construct the foundation, and a required amount of the foundation structure is produced at a factory. Installed on the concrete in line with the sumi line, fastened each reinforcing bar projecting from the end face of the connection side of each foundation structure to each other, then assemble the formwork at the connection point and pour the concrete A construction method for a foundation for a building such as a house, characterized in that the construction of the building is completed.