JPH0833018B2 - Underground parking skeleton construction method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a skeleton construction method for an underground parking lot in which an underground continuous wall reaching a supporting ground is provided around a building as an underground outer wall, and particularly, to an inner surface side of the underground outer wall. It relates to the underground structure method of the type that reinforces with a retaining wall.

<< Conventional Technology >> Conventionally, an underground skeleton method for a building as shown in FIG. 2 has been known.

In FIG. 2, 1a and 1b are underground continuous walls that are the outer wall of the building, and as shown in the figure, the continuous underground walls 1a and 1b are provided in parallel at a predetermined interval, and the lower part thereof reaches the supporting ground. ing.

A large number of buttress-type continuous walls 2a, 2b, 2c,... Arranged orthogonally to the outer walls 1a and 1b so as to bridge the outer walls 1a and 1b are provided in the opposed portion of the underground outer walls 1a and 1b. The underground outer walls 1a and 1b are firmly supported by connecting the underground outer walls 1a and 1b to the buttress type continuous walls 2a, 2b, 2c. Then, the space facing the underground outer walls 1a, 1b is cut to a predetermined depth, and the cut space is used as a space on the basement floor of the building.

As shown in FIG. 2, buttress-type continuous walls 2a, 2a
There is also known a construction method in which the portions of b, 2c ... Along the underground continuous walls 1a, 1b are projected above the root cutting base Z and are used as partition walls of the projecting basement floor.

<< Problems to be solved by the invention >> In the conventional underground skeleton method shown in FIG.
Buttress-type continuous walls 2a, 2b, 2c connecting between 1a and 1b,
Since it is provided so as to reach the supporting ground at a large depth over the entire area between the two underground outer walls 1a and 1b, the use of materials such as concrete and reinforcing bars becomes enormous as a whole, and the construction period becomes longer. was there.

The present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to make it possible to reduce the use amount of a skeleton material such as concrete or a reinforcing bar as compared with the conventional one, and to shorten the construction period from the conventional underground parking lot. It is to provide the frame construction method.

<< Means for Solving the Problem >> Therefore, in the present invention, an underground continuous wall serving as the underground outer wall of the building is provided, and a plurality of retaining walls that reach the supporting ground are provided integrally on the inner surface side of the continuous wall at a right angle, The upper part of the retaining wall is projected above the root cutting bottom, and that part is used as the partition wall of the underground parking lot.

<< Operation >> The retaining walls provided inside the two continuous underground walls serving as the underground outer walls are independent of each other, and do not integrally connect the continuous walls. Therefore, there is no wall between the retaining walls on both sides, and the amount of concrete and reinforcing steel used is reduced by that much.

<Example> FIG. 1 shows an outline of a skeleton construction method for an underground parking lot according to an example of the present invention, in which 1a and 1b are continuous underground walls serving as an outer underground wall of a building, with predetermined intervals. Provided in parallel,
The lower part reaches the support ground.

On the inner side of the underground outer wall 1a (the side facing the underground outer wall 1b), there are retaining walls 3a, 3 having a short horizontal dimension orthogonal to the outer wall 1a.
b, 3c ... Are provided integrally with the outer wall 1a at predetermined intervals. Similarly, on the inner surface side of the underground outer wall 1b, the retaining walls 4a, 4b,
4c are provided integrally with the outer wall 1a at a predetermined interval. The retaining walls 3a, 3b, 3c ... and the retaining walls 4a,
The lower part of 4b, 4c ... reaches the support ground, and the retaining wall 3
Underground outer wall 1a is strongly supported by a, 3b, 3c.
The underground outer wall 1b is firmly supported by the retaining walls 4a, 4b, 4c..., And each is a self-supporting retaining wall.

Then, as shown in FIG. 1, the ground between the underground outer walls 1a and 1b is cut off, and a space serving as an underground floor is formed there. Then the retaining wall
The upper portions of 3a, 3b, 3c ... and the retaining walls 4a, 4b, 4c ... are projected above the root cutting base Z, and the projecting portions are used as the partition walls of the basement floor, that is, the underground parking lot.

<< Effects of the Invention >> As described in detail above, in the present invention, independent retaining walls are provided on the inner surface side of the continuous underground wall (underground outer wall), respectively. Since it is not a buttress type continuous wall that connects the two underground outer walls, there is a gap between the retaining walls attached to both underground outer walls, so the amount of concrete and reinforcing bars used is that amount. And the construction period will be shortened because there is no continuous wall. Further, the upward protruding portion of the retaining wall can be effectively used as a partition wall of the underground parking lot.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a skeleton construction method for an underground parking lot according to an embodiment of the present invention, and FIG. 2 is a schematic diagram of a conventional skeleton construction method for a building. 1a, 1b …… Underground continuous wall (underground outer wall) 2a, 2b, 2c …… Butless continuous wall 3a, 3b, 3c …… Retaining wall 4a, 4b, 4c …… Retaining wall

Claims (1)

[Claims] [Claim 1] An underground continuous wall serving as an outer wall of a building is provided,
A plurality of retaining walls that reach the supporting ground are orthogonally provided integrally on the inner surface side of the continuous wall, the upper portion of this retaining wall is projected above the root cutting bottom, and that portion is used as a partition wall of the underground parking lot. Characteristic construction method of underground parking lot.