JP2766888B2 - Building construction method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a construction method for a building having a basement floor.

[Conventional technology]

Conventionally, when constructing a building with an underground floor, the underground space for the underground floor is dug down, and temporary supporting members such as bellows and cut beams are passed through this underground space while supporting the surrounding earth pressure. The basement floor is constructed, and then the ground floor is constructed upward from the constructed basement floor. On the other hand, there are cases where the underground floor is built downward while digging into the underground space (reverse strike), while the ground floor is also built at the same time, and there have been attempts to reduce temporary construction costs and shorten the construction period by simultaneous construction.

[Problems to be solved by the invention]

However, in the case of constructing an underground floor after forming an underground space, there is a problem that the construction becomes complicated due to the provision of the temporary support members. When the ground floor is also constructed while the basement floor is reversely hit as described above, the progress of the basement floor is extremely slow because the reverse of the basement floor is performed over the entire range of the basement floor plane. Under the influence, the advantage of the simultaneous construction of the ground floor and the basement floor was not so great.

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

[Means for solving the problem]

The present invention has been made in view of the above problems,
The underground floor skeleton surrounding the inner periphery of the digged underground space is constructed ahead of the underground floor skeleton central part, and the skeleton central part is located above the underground floor skeleton peripheral part on the underground floor. The above-mentioned problem is solved by building together with the peripheral part.

(Operation)

In the present invention, the central open space formed by the preceding construction of the peripheral portion (basement floor) of the basement peripheral portion of the basement floor over the inner periphery of the underground space supports the earth pressure instead of the temporary support member. Thus, the center of the skeleton can be constructed in the same manner as the ground floor, and the center of the skeleton and the skeleton on the ground floor are simultaneously directed upward.

〔Example〕

Next, the present invention will be described in detail based on the embodiment shown in FIGS.

In the figure, reference numeral 1 denotes an underground space for constructing an underground portion of a building or the like, which is formed by digging an inside surrounded by a retaining wall such as a sheet pile. Then, while digging into the underground space 1, the framing portion 2 of the underground floor along the inner periphery of the underground space 1 is constructed (that is, the framing portion of the underground floor is constructed by reverse tapping).

The construction of the peripheral part 2 of the skeleton allows the earth pressure around the underground space 1 to be received and an open space 3 to be formed in the center of the underground space 1 (see FIG. 1).

Then, as shown in FIGS. 2 and 3, a central portion 4 of the basement floor is constructed in the open space 3 by the method of constructing the ground floor, and a peripheral portion of the ground floor is located above the peripheral portion 4 of the basement. 5 are constructed at the same time, and most of the basement floor and the ground floor are constructed in the same direction (above), so that a building can be obtained in a short time. Although not shown, when the construction of the central part 4 of the basement on the basement floor is completed, the process proceeds to the construction of the central part of the ground floor continuously.

The construction of the peripheral part 5 of the ground floor may be started simultaneously with the reverse strike of the peripheral part 2 of the basement floor.

〔The invention's effect〕

As described above, according to the present invention, the skeleton of the underground floor surrounding the inner periphery of the underground space that is dug down is constructed ahead of the skeleton center of the underground floor, and the skeleton central part is
Since the building is constructed together with the ground floor frame peripheral part on the basement floor peripheral part, an open space is formed in the central part of the basement space, and the basement floor can be efficiently constructed without using a temporary support member or the like. . The central part of the basement floor is constructed in the same way as the ground floor in this open space, while using the basement part of the basement floor as a gantry for carrying in. The central part of the frame is constructed at the same time, and the construction period can be shortened without fail.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a skeleton on the basement floor in one embodiment of the construction method of a building according to the present invention, and FIG. 2 is a diagram showing simultaneous construction of a skeleton on the basement floor and a skeleton on the ground floor. FIG. 3 is an explanatory view showing a state, and FIG. 3 is an explanatory view showing a peripheral portion of the skeleton on the basement floor and a central portion of the skeleton. 1 ... Underground space 2 ... Periphery of the skeleton (basement floor) 3 ... Open space 4 ... Central part of the skeleton (basement floor) 5 ... Periphery of the skeleton (ground floor)

Claims (1)

(57) [Claims] 1. An underground floor surrounding a skeleton of an underground space extending over an inner circumference of an underground space is constructed before an underground floor of a skeleton central part, and the skeleton central part is formed of the underground floor of the skeleton surrounding part. A construction method for a building characterized by being built together with the surrounding area above the ground floor.