JPS60250127A - Construction of basement - Google Patents

Abstract

PURPOSE:To construct a basement in a short time by a method in which precast concrete bottom slabs are laid on the bottom of a hole, a precast box part to make up a basement is set on the bottom slabs, and the surrounding of the box part is embedded with soil. CONSTITUTION:A hole H is formed by excavation of the ground's surface on site, precast concrete bottom slabs 1 of a two split structure are set on the bottom of the hole H. Precast concrete box parts 6 (6d and 6b) of a two split structure are set on the bottom slabs 1 and these component parts are connected. Afterwards, the surrounding of the box parts 6 is back-filled with soil and a structure, e.g., a housing, etc., is constructed on the box parts 6. Since the structural parts of the basement are made of precast concrete, the period of the construction can be shortened and the quality of the basement can be stabilized.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The invention relates to a method for constructing a concrete basement6゜[Prior Art] Conventionally, in general, when constructing a concrete basement, there are two steps: ■ Digging a hole; ■Foundation NJ - Reinforcement and formwork for the part that will become the floor → concrete pouring → curing.

■Reinforcement arrangement and formwork for the parts that will become the walls and ceiling -> Concrete pouring -> curing, and
ll builder/i! However, in this type of construction method, a series of works as mentioned above have to be carried out sequentially, which lengthens the construction period and makes it difficult to obtain a certain level of quality. There were drawbacks such as.

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a method for constructing a ground floor room that can shorten the construction period, achieve a stable ratio of quality, and reduce construction costs.

[Beak formation of invention]

In order to achieve such an objective, in the present invention, a pre-fabricated concrete plate made elsewhere is laid at the bottom of the hole, and on top of it a multi-segmented structure made in advance like @Ki@Saka is laid in the bottom of the hole. How to set the precast concrete back box M components? I'm taking it.

〔Example〕

An embodiment of the present invention will be described below with reference to Figure rkj. FIG. 1 is a perspective view of a precast concrete box-shaped member with a two-part structure used in carrying out the present invention.
Figures 2 to 6 show engineers nm (/
J explanatory diagram.

In constructing the basement A, first, a hole H is formed by excavating the ground surface G at the site shown in Figures 2 and 3.

Next, place precast concrete with a two-part structure prefabricated in a factory etc. in the hole H (see Figure 4). 1. To join a and lb, as shown in Fig. 7, a steel plate 2 is buried and fixed in advance by screwing a stud 3 onto the upper surface of the joint portion of both plate beak forming members La and lb. This is done by bath-welding these steel plates 2 to the joining steel plate 4.In addition, when setting the same plate 1, the periphery of each member +a, lb (box-shaped member 6 to be described later) constituting one bottom plate 1 is 5 as shown in FIG.
A number of holes 5 are provided in advance, and using these holes 5, the gap between the bottom plate and the ground can be filled with mortar B (see Fig. 9).

Next, the brecast concrete back box-shaped member 6 shown in the signature diagram is set on the upper part of the bulge f1. (See Figure 5) Here, in this example, the box-shaped member 6 is
It was manufactured in advance by II etc.

Moreover, it has a two-part structure. Both members 6a and 5b constituting the box-shaped member 6 are composed of a wall portion 7 having a U-shaped cross section and a ceiling portion 8 provided above the wall portion 7. In addition, the bottom Fi of the box-shaped member 6, [edge mounting is performed by embedding the steel plate 9 on the inner surface of the wall portion of the box-shaped member 6 with a stand of 1° as shown in FIG. At the elegant place, I excitedly installed the steel plate 11 on the stand [2] and buried it in place.

Both steel plates 9 and 11 are connected to the L-shaped steel plate 13 from K. Further, the box-shaped structural members 6a and 5b are connected to each other by a method similar to that used in the case of the gfl.

As shown in FIG. 6, the outer periphery of the box-shaped member 6 is backfilled with earth and sand, thus creating a concrete f with a basement A.
#Can construct C.

Note that the reference numeral 14 in FIGS. 1, 5, and 6 indicates a window.

Figures 10 (a) and (b) are box m constituent members +5, respectively.
By combining various box JM constituent members that are unitized in this way.

As shown in FIGS. 11 and 12, it is possible to construct a ground F-beak construction wDC with underground chambers A of different sizes.

Furthermore, Figures 13 and 14 were constructed as described above. iMY which inherited other structures on top of structure mc
Show. In this case, as shown in Figure 14, the structure @C
Grass protruding outward on the wall of 4゜Kerat 20? If attached, it is possible to construct a morgue with a wider exclusive area than the lower 111II structure WC.Also, in the above embodiment, the one box-shaped member 6 has a 2' split structure, but the mS type The member 6 may have a three-part structure or a multi-part structure of four or more parts.

〔Effect of the invention〕

As explained above, according to the method for constructing a ground F chamber according to the present invention, excellent young fruits can be produced without using the primary method.

Currently, there is no need to pour concrete (,
Of course, there is no need to arrange reinforcement or assemble formwork, and the construction period can be shortened accordingly. In addition, the basement components can be manufactured at a location with good workability, such as a factory, which is different from the site, thereby making it possible to stabilize quality and reasonably reduce construction costs. Also, Ikeshita room #4'#:m
Since the material has a multi-segment structure, the #hI differs from the site.
gT″C: Even if manufactured, it can be transported easily.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a box-shaped member made of precast concrete, Figs. @ Figure 8 is a plan view of the Yosaka component, Figure 9 is a sectional view showing the joint structure of the bottom plate and the box-shaped member, and Figures 0 (a) and (b) are the dan-like shapes of the box-m component. Perspective view showing an example, No. 11
1 and 12 are schematic sectional views showing examples of basements constructed with trenches according to the present invention, and FIGS. 13 and 14 are underground t*
This is an example of an example in which another purchased structure was built on top of a structure. A...Jichouji, q...Surface 1 river, H...Hole, l
...1 Iita, L a, 1. b...Bottom plate component, 5...hole, B...mortar e Applicant: Tadao HitotsukiFigure 4GFigure 5Figure 6Figure 7Figure 8Figure 9Loss Figure 11Figure 12 figure

Claims (1)

[Claims] After making a hole J, a precast concrete board was laid in the mansion of the same size, and a V cast concrete box made of several parts #f was built on top of the fundus board to define the ground-F chamber inside. A method for constructing a basement, characterized in that a basement is built by setting mold members and backfilling the outer circumference of the set box-shaped member with earth and sand.