JPS61109870A - Structure of steel basement - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to the construction of a basement made of #lI, and more specifically to a basement made of Wi and an above-ground building built above it.

It relates to the structure of a steel 9A basement, characterized by being integrally formed by joining with a cloth foundation that supports it.

(Prior art and problems) In recent years, the demand for basements has increased due to the effective use of land. In particular, it is preferred to have a basement connected to an above-ground building to expand the living space. However, the basement and the upper part of the basement are separate structures from the above-ground building, and it was difficult to form them into one piece.

For example, a basement IO and an above-ground building 20 built above it.
As shown in the cross-sectional schematic diagram in FIG. 5 and the plan cross-sectional diagram in FIG. ,
Backfill concrete 4 between the cloth foundation 30 and segment l1
It is constructed by placing 0. Therefore, the cloth foundation 30 of the above-ground building 20 and the basement 10 are separated by the backfill concrete 40, and are not formed in one piece, which has the disadvantage of increasing uneven settlement of the cloth foundation 30. Moreover, since the steel segment 11 is built within the 717 foundation 30, the size of the basement 10 is necessarily j1! + 1- There was also the problem that the room would be smaller than the living room in Building 20.

(Purpose of the Invention) Therefore, the present invention aims to reduce the size of the basement to that of the above-ground building by constructing the basement using steel segments and joining these steel segments to the reinforcing bars of the cloth foundation of the above-ground building. The above-ground building can be made to have the same size as the above-ground building, and since it has a structure that supports the above-ground building together with the cloth foundation, uneven settlement of the above-ground building can be prevented, and the above-ground building can be easily fixed.

(Example) The structure of the steel basement of the present invention will be explained in detail below based on the drawings.

FIG. 1 is a schematic cross-sectional view showing a steel basement 1 and a cloth foundation 3 of an above-ground building 2.

That is, the cloth foundation 3 that supports the above-ground building 2 has steel segments 1 a, 1 b, 1 c, which constitute the basement.
It is formed integrally with the backfill concrete 4 placed around the ld.

FIG. 2 is a partially omitted sectional view showing a state in which the cloth foundation 3 of the above-ground building 2 and the steel basement 1 are integrally joined.

Fabric foundation 3 on steel segment la (wall panel) and steel segment) lc (ceiling panel) of steel basement l
The upper end reinforcement 3a, the lower end reinforcement 3b, and the haunch reinforcement 3C disposed inside are welded to have a fixed length. There are stirrups 3d, 3d... between the upper end reinforcement 3a and the lower end reinforcement 3b.
・are arranged at regular intervals, and the haunch muscle 3C is the upper end muscle 3
a and the lifting bars 3e.

In such a state, concrete is placed in the two-chin part and the foundation part of the cloth foundation 3, and at the same time, backfill concrete 4 is placed around the outer periphery of each steel segment. Then, cloth foundation 3 is
It will be formed integrally with the steel basement l via each reinforcing bar.

In particular, since the basement 1 and the cloth foundation 3 are integrally joined by forming the haunch portion 5, an extremely strong joint is formed.

Figure 3 shows a steel basement 1 built on a cloth foundation 3 that is integrated with backfill concrete 4 placed around the steel segments la (wall panels) and steel segments lc (ceiling panels). FIG. 2 is a schematic diagram showing an above-ground building 2.

That is, since the foundation part of the cloth foundation 3 is formed directly under the steel segment (I panel) la (I panel), the steel basement 1 and the above-ground building 2 can be constructed to have approximately the same size. Also, the above-ground building 2 will be supported by steel segments lc (ceiling panels).

FIG. 4 is a plan cross-sectional view comparing the size of living rooms in the steel basement 1 and the above-ground building 2. At the bottom of the cloth foundation 3 formed into a substantially rectangular shape, there are steel segments la, l forming a steel basement.
b... (wall panels) are erected and the size of the steel basement 1 and the living room are approximately equal in size.

(Effects) As described above, the steel basement structure of the present invention exhibits the following significant effects because the W4 basement and the cloth foundation of the above-ground building are integrally joined.

(1) The cloth foundation and basement work together to prevent uneven settlement of above-ground buildings.

(2) Even on soft ground, large above-ground buildings can be fixed without using special ground improvement or piles.

(3) The basement can be constructed to be approximately the same size as the living room in the above-ground building.

(4) There is no need to interpose a section joint between an above-ground building with a basement and an above-ground building without a basement.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional schematic diagram showing the basement and the foundation. Fig. 2 is a partially omitted sectional view showing the state of connection between the cloth foundation of the above-ground building and the basement, and Fig. 3 is a schematic diagram illustrating the above-ground building above the basement. Figure 4 is a plan cross-sectional view comparing the sizes of above-ground buildings and basements. Figure 5 is a cross-sectional schematic diagram showing conventional cloth foundations and basements. Figure 6 is the size of conventional basements and cloth foundations. FIG. 1...m basement. la, lb, lc, ld...steel segments. 2... Ground building, 3... Fabric foundation. 3a... Upper end muscle, 3b... Lower end muscle. 3C...Haunch muscle. 4... Backfill concrete. 5...Hatch part. Applicant Three K Co., Ltd. Agent Patent Attorney Kuninori Funahashi Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] 1. A steel basement constructed by erecting a plurality of steel segments underground, characterized in that it is formed by joining the steel basement and the foundation of the above-ground building. Steel basement structure. 2. The structure of a steel basement according to claim 1, wherein the steel segments constructing the steel basement and reinforcing bars installed at the foundation of the building are welded together.