JPS5944431A - Construction of basement - Google Patents

Abstract

PURPOSE:To effectively construct a basement by a method in which the ground surrounded by a foundation placed along a foundation construction line is excavated to form an underground space, panels are assembled in the underground space by being supported by foundation piles, and a filling material is packed between the panels and the inner wall of the underground space. CONSTITUTION:After foundation piles 2 are driven deeper than a predetermined depth in place on the floor 4 of a basement 4 along a foundation construction line. Foundations 5 are then placed on the construction line 1, and after the constructins 5 are hardened, the ground surrounded by the foundation piles 2 is excavated to form an underground space 6. Supporting pillars 7 are attached to the foundation piles 2, plural panels 8 are assembled in parallel on the foundation piles 2 and subjected to a water-proofing treatment, and then a filling material 12 is packed between the inner wall 6A of the underground space and the panels 8. The excavating range of the underground space 6 can thus be minimized, and since the panels 8, etc., can be produced in advance in a factory, the construction work can be effetively performed.

Description

[Detailed description of the invention] This invention relates to a method of constructing a basement.

Conventionally, when constructing a basement, as shown in Figure 1, earth retaining members B such as sheet piles are driven into the planned site of the basement A over an area wider than the planned completion floor surface A1 of the basement, and then the site is excavated. After constructing the basement floor surface A1 and wall surface A2 with poured concrete, etc., and applying waterproofing construction C to the outer surface, the earth retaining member B is removed and the space between wall surface A2 and the inner surface of the excavation hole is backfilled. I was worried.

In the above, the size of the excavation hole is generally about 6 mm from the bottom of the basement for the purpose of making it easier to perform the construction work when constructing the basement and to prevent delays in the first half of the construction process.
It is defined as the intersection of the slope line drawn at 0° and the ground line GL, and generally, in the case of a semi-basement or a single-story basement, excavation is performed to a width of about 1 m with respect to the planned floor surface A1 of the basement.

However, according to the above construction method, koto excavation is a major construction work, which causes the influence of the ground on neighboring land, noise, etc. - It is unsuitable for construction work on membrane-based residential land, and due to various restrictions, construction cannot be carried out arbitrarily. There were some drawbacks.

In view of the above-mentioned drawbacks, this invention has been made with the aim of providing a method of constructing a basement that can be easily constructed while minimizing the influence of the ground on neighboring land as much as possible. After driving foundation piles at appropriate locations along the foundation, a foundation foundation is driven on the foundation assembly line, and after hardening is completed, an area surrounded by the line connecting the foundation piles is excavated to form an underground space. A plurality of panels are assembled in the underground space by being supported by the foundation piles located in the space, and a filler is filled between the panels and the inner wall of the underground space.

This invention will be explained below with reference to Examples.

2 and 3 are explanatory diagrams showing the steps of an embodiment of this invention, and FIG. 4 is a sectional view of a panel used in an embodiment of this invention.

As shown in FIG. 2, the method for constructing a basement according to the present invention is to first install foundation piles 2, 2 is driven deeper than the planned location for forming the floor 4 of the basement 3 as shown in Figure 3, and then the foundation construction line 1 is
A foundation foundation 5 is cast on top, and after hardening, the foundation pile 2,
As shown in FIG. 2 or 3, the area surrounded by the line connecting 2 is excavated to form an underground space 6, and support columns 7 are attached to the foundation piles 2, 2 located within this underground space 6, respectively. , 7 are attached and supported by the foundation piles 2, 2 via the support columns 7, 7, the interior surface 8A and the peripheral end surface 8 are installed as shown in FIG.
A plurality of foamed concrete panels 8 provided with a waterproof skin layer 9 are assembled in parallel on B, and a waterproof sealing material 11 is press-fitted between the joints 10 to perform waterproofing, and then the panels 8 and the underground space are sealed. Between the inner wall 6A, the foundation foundation 5
A filler material 12 such as gravel or concrete is filled through an injection port 5A formed in advance.

In the above, it is sufficient that the distance between the inner wall 6A of the underground space 6 and the panel 8 is 100 mm to 200 mm, and there is no need to make it larger.

Further, the excavated underground space 6 is reinforced at its upper part by the frame-shaped foundation foundation 5 and at its side by the foundation piles 2, 2, so that soil sagging is sufficiently prevented.

In the above embodiment, the panel is made of foamed concrete;
Because groundwater is allowed to freely permeate the exterior, this groundwater efficiently keeps the basement warm.
Moreover, the skin layer on the interior surface prevents water leakage.

Since this invention is configured as described above, the excavation range for constructing a basement can be minimized, and obstacles such as ground subsidence and noise to neighboring land can be reduced.Furthermore, the panels can be manufactured in advance in a factory. Since it is possible to easily and quickly construct a basement with watertightness equivalent to or higher than conventional construction methods, it has the effect of being easy to construct, especially when constructing basements for residential buildings. .

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of a conventional example, FIGS. 2 and 3 are construction explanatory diagrams of an embodiment of this invention, and FIG. 4 is a sectional view of a panel used in an embodiment of this invention. 1...Foundation construction line, 2...Foundation pile, 5...Foundation foundation, 6...Underground space, 7...Support column, 8...Panel, 8A...Interior surface, 8B ... Peripheral end face, 9...
Waterproof skin 5 single layer, 10... joint, 11... sealing material, 12
...Filling material. 6-

Claims (1)

[Claims] (1) After driving foundation piles at appropriate locations along the foundation construction line of the building, drive the foundation foundation on the foundation construction line, and after hardening, excavate within the area surrounded by the line connecting the foundation piles. ,
forming an underground space, and assembling a plurality of panels in the underground space while supporting them on the foundation piles located in the underground space;
A method for constructing a basement, characterized in that a filling material is filled between the panel and the inner wall of the underground space.