JPH05202631A - Underground parking garage - Google Patents

Abstract

PURPOSE:To provide a space in the underground of an existing building and construct an underground parking garage. CONSTITUTION:Floor slabs on the lowest story of an existing building are taken to pieces and foundation piles 10, 10... are exposed. Holes 14, 14... are dug on the outer sides of the foundation piles 10, 10... and continuous underground walls 15, 15... are constructed. The inner sides of the continuous underground walls 15, 15... are dug and post-placing concrete 16, 16... are placed in the inner side surface thereof and new floor slabs 19 are also placed to form a space 17 required for a parking space.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underground parking lot, and more particularly to an underground parking lot utilizing an underground portion of an existing building.

[0002]

2. Description of the Related Art Conventionally, when constructing an underground parking lot, a space necessary for a parking space is provided in advance in the underground portion of a newly built building, or when the building is expanded to increase the floor area. , A space will be provided in the basement of the expanded building.

[0003]

As described above, the underground parking lot can be constructed only when a new building or a new building is built. If the underground space of an existing building is to be excavated to provide a necessary space for a parking space, the frictional force in the vertical support direction between the ground around the foundation pile and the foundation pile will decrease, and the vertical design will increase. Supporting power cannot be secured. Furthermore, there is a risk that the lateral shaking of an earthquake cannot be resisted.

Therefore, there is a technical problem to be solved in order to construct an underground parking lot by providing a space part in the underground part of the existing building, and the present invention aims to solve this problem. ..

[0005]

The present invention has been proposed in order to achieve the above-mentioned object, and the floor slab in the lowermost layer of an existing building is dismantled, and a hole is drilled outside the foundation pile to form a continuous ground. The inner wall is constructed, the foundation pile and the continuous underground wall are integrated, the post-cast concrete is placed inside the continuous underground wall, and a new floor slab is placed to form the space. It provides an underground parking lot characterized by the above.

[0006]

[Operation] The continuous underground wall constructed on the outside of the foundation piles of the existing building is integrated with the foundation piles to increase the frictional force with the ground, which ensures vertical support and also prevents lateral shaking during an earthquake. I can resist. Then, post-cast concrete is placed inside the continuous underground wall, and a new floor slab is also placed to secure a wide space, and an underground parking lot is constructed in this space.

[0007]

An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 shows the plane of the bottom layer of the existing building, which includes foundation piles 10, 10 ... and independent footings 11, 11.
.. are connected by foundation beams 12, 12, and a floor slab 13 is cast. When constructing the underground parking lot of the present invention,
First, the bottom floor slab 13 shown in FIG. 1 is disassembled and removed, and the foundation piles 10, 10, ..., Independent footings 11, 1 are removed.
1 ..., the foundation beams 12, 12 ... are exposed. Next, as shown in FIG. 2, holes 14, 14, ... Are provided outside the foundation piles 10, 10.
To drill. The holes 14, 14 ... Are excavated slightly deeper than the depth of the space required for the underground parking lot.

Then, as shown in FIG. 3, the holes 14,
14 ... Concrete is placed inside and continuous underground walls 15,1
Build 5 ... In order to gradually convey the reduced amount of the frictional force of the foundation piles 10, 10 ... To the continuous underground walls 15, 15, ... The post-cast concrete 16a, 16b ..., which will be described later, is sequentially placed to form the foundation piles 10, 10 ... and the continuous underground wall 1.
Integrate 5,15 ...

As shown in FIGS. 4 and 5, the continuous underground wall 1
The inner parts of 5, 15 ... Are excavated to discharge the earth and sand, and first, the space part 17a of the first layer is provided. Exposed continuous underground wall 15,
Post-cast concrete 16a, 16a on the inner surface of 15 ...
Are piled up and the foundation piles 10, 10 ... and the independent footings 11, 11 ... Are integrated with the continuous underground walls 15, 15 ..., so that the continuous underground walls 15, 15 ... Have a wide contact area. As a result, the frictional force with the ground becomes large. Furthermore,
The inner part of the continuous underground walls 15, 15 ... Is excavated to discharge the earth and sand, and the second-layer space 17b is provided. Then, on the inner surface of the continuous underground wall 15, 15 ... exposed at the bottom of the first-layer post-cast concrete 16a, 16a ..., the post-cast concrete 16b, 16b. And connect.

The above procedure is repeated to excavate to a predetermined depth, and post-cast concrete 16, 16 ... Is placed on the inner surface of the continuous underground wall 15, 15. Then, as shown in FIG. 6, new piles 18, 18 ... Are driven in and a new floor slab 19 is placed above the piles 18, and the space required for the underground parking lot is provided inside the continuous underground walls 15, 15. The part 17 is formed. Thus, as shown in the figure, a mechanical multi-level parking facility device 20 can be built in the space 17 and rotated in the direction of the arrow to park a large number of automobiles.

The present invention can be modified in various ways without departing from the spirit of the invention, and it goes without saying that the invention extends to the modified version.

[0012]

As described in detail in the above-mentioned embodiment, the present invention can construct an underground parking lot limited to a newly constructed or newly constructed building by utilizing the underground of the existing building. Therefore, a large number of parking spaces can be secured without hindering the use of the existing building, and it is possible to reduce on-street parking and contribute to the improvement of the local environment.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view showing a lowermost layer of an existing building.

FIG. 2 is a plan view illustrating a procedure for constructing an underground parking lot.

FIG. 3 is a plan view illustrating a procedure for constructing an underground parking lot.

FIG. 4 is a plan view illustrating a procedure for constructing an underground parking lot.

FIG. 5 is a vertical cross-sectional front view illustrating a procedure for constructing an underground parking lot.

FIG. 6 is a vertical sectional front view of the completed underground parking lot.

[Explanation of symbols]

 10 foundation pile 11 independent footing 12 foundation beam 13 (existing) floor slab 14 hole 15 continuous underground wall 16 (total) post-cast concrete 16a, 16b ... (for each layer) post-cast concrete 17 (overall) space 17a , 17b ... Space (of each layer) 18 (New) pile 19 (New) floor slab 20 Mechanical multi-level parking facility device

Claims (1)

[Claims] 1. Dismantling the floor slab at the bottom of the existing building,
A hole is drilled on the outside of the foundation pile to construct a continuous underground wall, the foundation pile and the continuous underground wall are integrated, and post-cast concrete is placed inside the continuous underground wall. An underground parking lot characterized by placing a floor slab to form a space.