JPH0367169B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method of constructing a basement of a building on a narrow urban site.

(Conventional technology) When constructing a basement on a narrow site adjacent to a public road, the site is similar to that of a neighboring house, and sheet piles are placed around the site to prevent landslides from collapsing on the adjacent site. We excavated the soil that had been
After the excavation is completed, the foundation, columns, beams and walls of the building are constructed, and then the space between the row of sheet piles and the adjacent land is backfilled, and after the backfilling work is completed, the sheet piles are pulled out, or Buried to death.

(Problems to be Solved by the Invention) In the conventional construction method described above, sheet piles are driven close to the adjacent land in order to construct the basement as wide as possible within the site.
The vibrations caused by the driving work cause problems with neighboring houses, and it takes a great deal of effort and power to pull out the sheet piles.

(Means for Solving the Problems) The present invention was proposed to solve the above problems, and it is possible to install a plurality of external wall steel plates with studs arranged at predetermined intervals on the inner surface of the steel plate on the required site. After that, the required reinforcement was placed between the adjacent studs on the inside of the steel plate of the outer wall, and the inner wall plate was installed across the inner surface of each stud. A steel plate-concrete enclosure is constructed by pouring concrete between the outer wall steel plates, and then the earth and sand inside the enclosure is excavated to sink the enclosure to a predetermined depth in the ground. This relates to a basement construction method characterized by pouring foundation concrete.

(Function) In the present invention, a plurality of exterior wall steel plates with studs arranged at predetermined intervals on the inner surface are carried to a required site, these exterior wall steel plates are assembled to form a steel enclosure, and the enclosure is After placing the required reinforcement in the space formed between the exterior wall board and the adjacent studs on the inside thereof, the interior wall board is installed across the inside surface of each of the studs, and the space between both the inside and outside wall boards and the studs is installed. A steel plate concrete enclosure is constructed by pouring concrete into the created space.

By excavating the soil inside the steel plate concrete case constructed in this way, the case is gradually settled into the ground within the site, and when it has settled to a predetermined depth, foundation concrete is poured at the bottom of the case. The purpose is to construct a basement.

(Effects of the Invention) According to the present invention, as described above, concrete is poured between the outer wall steel plate having studs on the inner surface of the site and the inner wall plate attached to the studs to form a steel plate concrete enclosure. The basement frame is constructed by assembling the basement, excavating the earth and sand inside the enclosure, and allowing the enclosure to settle to the required depth in the ground.Therefore, there is no noise, no vibration, and there is no negative impact on adjacent land. .

At this time, the outer shell of the enclosure is constructed by transporting a plurality of exterior wall steel plates with studs on the inner side to the site and assembling the steel plates, so construction can be carried out even in areas with poor road conditions leading to the site. It becomes possible.

Further, the space formed between the studs arranged inside the outer wall steel plate can be used not only as a space for reinforcing but also as a space for piping and wiring.

Further, according to the present invention, the inner wall plate of the steel plate concrete enclosure can be used as is as an inner wall of a basement.

Furthermore, since the outer circumferential surface of the concrete frame portion of the enclosure is covered with an outer wall steel plate, it is possible to prevent external sewage, underground water, etc. from entering the indoor side through the concrete frame portion.

(Example) The present invention will be described below with reference to the illustrated embodiments.

A, A', B, B', C, and C' are housing units in which outer flanges of studs 2 with grooved cross sections are fixed by welding or the like at predetermined intervals on the inner surface of the outer wall steel plate 1.
After being transported to the site, the steel enclosure is assembled by welding adjacent units together.

Note that, if necessary, necessary piping and wiring are provided in the inner cavity of the stud 2 and shielded with a protection plate 3.

Next, vertical and horizontal reinforcing bars 4, 4' are arranged between the adjacent studs 2, 2, and then an inner wall board 5 is attached over the inner flanges of each of the studs 2.

FIG. 3 shows the lower bottom parts of the inner and outer walls, and the lower end 5a of the inner wall plate 5 is formed to be shorter than the outer wall steel plate 1 by the thickness of the solid foundation that will be constructed later.

Further, an L-shaped reinforcing bar 4a is connected to the vertical reinforcing bar 4 so that its horizontal part extends into the solid foundation that will be constructed later.

When the reinforcement between the inner and outer wall plates is thus completed, the bottom space of the inner wall plate 5 is sealed with a vertical weir plate 6 that reaches the lower end surface of the outer wall steel plate 1, and a space between the outer wall steel plate 1 and the inner wall plate 5 is closed. Concrete 7 is poured into the formed space to form a steel plate concrete enclosure P.

Next, the internal soil of the same body P is excavated to form the same body P.
When the container P settles down to a predetermined level L in the ground, the weir plate 6 is removed, solid foundation concrete 8 is placed inside the container P, and a basement is built to fill the site. To construct.

As before, the foundation for the main building will be installed in the basement.
Build columns and beams.

Note that the inner wall board 5 in the basement can be used as an inner wall for the main building.

According to the method of the above embodiment, even in urban areas where the road conditions leading to the site are poor and the site is narrow, it is possible to construct a basement throughout the site without vibration or noise. Since the frame is coated, by applying rust prevention treatment to the outer wall steel plate 1, it is possible to prevent underground water and external sewage from entering the indoor side.

Although the present invention has been described above with reference to embodiments, the present invention is, of course, not limited to such embodiments, and can be modified in various designs without departing from the spirit of the present invention. .

[Brief explanation of drawings]

Fig. 1 is a cross-sectional plan view showing a steel plate concrete enclosure that constitutes the framework of a basement constructed by the method of the present invention, Fig. 2 is a partially enlarged view thereof, and Fig. 3 is a longitudinal cross-sectional side view showing the lower base of the basement. FIG. 4 is a cross-sectional plan view of the steel case. 1... Exterior wall steel plate, 2... Stud, 7... Concrete, 8... Solid foundation concrete, A, A',
B, B', C, C'... enclosure unit, P... steel plate concrete enclosure.

Claims (1)

[Claims] 1. A plurality of exterior wall steel plates with studs arranged at predetermined intervals on the inside surface are transported to the required site, a steel enclosure is assembled, and then the required reinforcement is arranged between adjacent studs on the inside of the exterior wall steel plates. After that, an inner wall plate was installed across the inner surface of each stud, concrete was poured between the inner wall plate and the outer wall steel plate to construct a steel plate concrete enclosure, and the earth and sand inside the enclosure was then poured. A construction method for a basement, which is characterized by excavating and settling the box to a predetermined depth in the ground, and then pouring foundation concrete at the bottom of the box.