JPH03287922A - Method for constructing building - Google Patents

Abstract

PURPOSE:To shorten a construction period by simultaneously constructing the central portion of a building and the peripheral portion of an above ground story on the peripheral portion of an under ground story after the peripheral portion of the underground story has been constructed along the inner periphery of an excavated underground space. CONSTITUTION:The outer peripheral portion 2 of an underground story is constructed along the inner periphery of an underground space 1 formed by digging the interior ground surrounded by an earth retaining wall such as sheet piles etc., while an open space 3 is formed in the central section of the space 1, after which the central portion 4 of the underground story is constructed in a space 3, simultaneously with which the outer periphery 5 of an above ground story is constructed on the peripheral portion 2. And a central portion 4 is constructed in the space 3 by a method similar to that applied to the above ground story, while the earth pressure is being born by the periphery 2, so that the central portion 4 and the above ground story are simultaneously constructed. Consequently, the construction period can be made shorter.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a construction method for a building having a basement floor.

[Conventional technology]

Traditionally, when constructing a building with a basement floor,
The underground space for the basement floor was dug down, and temporary support members such as raised cut beams were passed in this underground space to support the surrounding earth pressure, and the basement floor was constructed. The ground floor is constructed upwards from the basement floor. In addition, while the basement floor was constructed downward while digging into the underground space (reverse construction), there were also cases in which the ground floor was constructed at the same time, in an attempt to reduce temporary construction costs and shorten the construction period by constructing at the same time.

[Problem to be solved by the invention]

However, when constructing a basement floor after forming an underground space, there is a problem that the construction becomes complicated due to the presence of the above-mentioned temporary support members. In addition, when constructing the ground floor while reversing the basement floor as described above, the construction of the basement floor progresses extremely slowly because the reverse construction of the basement floor is performed over the entire range of the basement floor plane. As a result, the benefits of constructing both ground and basement floors at the same time were not so great.

Therefore, in the present invention, it is an object of the present invention to construct a basement floor without using temporary support members in an underground space, and to be able to construct the basement floor more quickly.
The aim is to shorten the construction period by taking advantage of the simultaneous construction of the basement floor.

[Means to solve the problem]

The present invention has been made in consideration of the above-mentioned problems, and involves constructing the peripheral part of the basement floor frame that spans the inner periphery of the underground space formed by digging down before constructing the central part of the basement floor frame. The above-mentioned problem is solved by constructing the central part together with the peripheral part of the above-mentioned frame on the basement floor.

[For production]

In the present invention, the periphery of the basement floor frame extending around the inner periphery of the underground space supports the earth pressure instead of a temporary support member, and the central open space formed by the preliminary construction of the periphery of the frame (basement floor) The central part of the frame can be constructed using the same method as the ground floor, and this central part and the ground floor frame are constructed simultaneously upwards.

〔Example〕

Next, the present invention will be explained in detail based on the embodiments shown in FIGS. 1 to 3.

In the figure, 1 is an underground space in which the underground part of a building or the like is constructed, and is formed by digging down the interior surrounded by earth retaining walls such as sheet piles. Then, while digging down the underground space 1, the surrounding part 2 of the basement floor frame is constructed along the inner periphery of the underground space 1 (that is, the surrounding part of the basement floor frame is constructed by reverse hammering).

By constructing this frame periphery 2, the earth pressure around the underground space 1 is stopped, and an open space 3 is formed in the center of the underground space 1 (see Fig. 1).

Then, as shown in FIGS. 2 and 3, in this open space 3, the central part 4 of the basement floor structure is constructed using the above-ground floor construction method, and the surrounding part of the ground floor structure is placed above the surrounding part 4 of the ground floor. 5 at the same time, most of the underground floors and ground floors are constructed in the same direction (upward), and the building can be completed in a short period of time. Although not shown in the drawings, once the construction of the central part 4 of the basement floor is completed, the construction of the central part of the ground floor will proceed.

Note that the construction of the frame peripheral part 5 on the ground floor may be started at the same time as the building frame peripheral part 2 on the basement floor is reversed.

〔Effect of the invention〕

As explained above, according to the present invention, the peripheral part of the framework of the basement floor that spans the inner periphery of the underground space formed by digging is constructed before the central part of the framework of the basement floor, and the central part of the framework is Since the above-mentioned floor is constructed along with the surrounding part of the above-mentioned building frame of the floor, an open space is formed in the central part of the underground space, and the underground floor can be constructed efficiently without using temporary support members or the like. Then, while using the area around the frame on the basement floor as a platform for transport, etc., the central part of the frame on the basement floor can be constructed using the same method as on the ground floor in this open space, and the area around the frame on the ground floor and this basement floor The central part of the building frame is constructed at the same time, ensuring a reduction in construction time, which has excellent practical effects.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram showing the surrounding area of the basement floor frame in one embodiment of the building construction method according to the present invention, and Figure 2 is an explanatory diagram showing the simultaneous construction of the central part of the basement floor frame and the surrounding area of the ground floor frame. FIG. 3 is an explanatory diagram showing the condition, and is an explanatory diagram showing the peripheral part of the frame and the central part of the frame of the basement floor. 1... Underground space 2... Area around the structure (underground floor) 3... Open space 4... Central part of the structure (underground floor) 5... Area around the structure (ground floor)

Claims (1)

[Claims] The periphery of the basement floor frame that spans the inner periphery of the underground space that is dug down is constructed in advance of the center of the basement floor frame, and the center part of the frame is constructed above the ground floor frame periphery of the basement floor. A building construction method characterized by building together with the surrounding area.