JPH02125072A - Underground stereo parking area and building method thereof - Google Patents

Abstract

PURPOSE:To realize effective utilization of a ground and to reduce the thickness of a wall, i.e., reduction of a construction cost, by a method wherein a stereo parting area in which cars are parked in a vertical circulating manner is built in a ground and simultaneously is formed with a cylindrical concrete wall body. CONSTITUTION:An underground parking area A is formed with a bottom bed 1 being built at the lower port of the concrete wall body and a cylindrical thin concrete wall body 2, and has a bottom area being wide enough to allow parallel parking of at least two cars. A car is parked in the concrete wall body 2 like a stereo parking area A on a ground, and is parked in a state to be placed on an observation car type circulating pallet. This constitution enables ensurance of a parking space having high containing capacity without disturbing effective utilization of a building, and enables building of the parking area at a lost cost since the concrete wall body is thin.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to an underground multi-level parking garage and a method for constructing the same, which is mainly constructed in places where it is difficult to secure a parking space above ground.

[Problems to be solved by the invention] For example, office buildings and commercial buildings built in urban areas currently have
Although parking is essential, these buildings are usually constructed on narrow lots, making it difficult to secure sufficient parking space.

Traditionally, you have to choose between an underground parking lot or a multi-storey parking lot, but both hinder the effective use of limited land for buildings and result in the reduction of floor space for parking lots. .

This invention was made based on this background, and aims to propose a new parking lot that realizes effective use of land.

[Means for Solving the Problems] The present invention eliminates the influence on the floor area of above-ground buildings by providing a multi-story parking lot underground in which parking is carried out in a vertical circulation manner, thereby realizing effective use of land. By constructing the building with concrete walls, the structure bears the earth pressure and water pressure mainly as compressive stress in the inner circumferential direction, thereby reducing the wall thickness and, in other words, lowering construction costs.

For underground multi-level parking garages, earth anchors are buried at a depth deeper than the base construction depth, and after removing the waste concrete that forms the cylindrical concrete wall, the soil within that area is buried to a depth that will not collapse. At the same time as excavating the ground and forming a cutting edge at the tip of the concrete wall,
After forming the PCliil material anchoring part in a brim shape on the inner periphery of the concrete wall, the concrete wall is constructed to a certain height, and the PCliil material is pulled with jacks to sink the cutting edge by a certain amount, and the blade is It is constructed by repeating the process of excavating the inside of the mouth, and finally by creating a base.

〔Example] The present invention will be explained below based on the drawings showing one embodiment.

The underground multi-level parking lot A of the present invention is constructed below a building on the ground, as shown in Figure 1-C, and parking is carried out in a vertical circulation manner.

As shown in the figure, the underground multi-level parking lot A is composed of a bottom plate 1 formed below and a cylindrical concrete wall body 2,
It has a floor area that can accommodate at least two cars in parallel.

Cars are installed within the concrete wall 2, similar to the multi-story parking lot above ground, and are parked on pallets that circulate like a Ferris wheel.

Figure 1-■ is a plan view of the above-ground building, and as shown by the broken line, this underground parking lot A can be used as a pile foundation for the building, and the cylindrical concrete wall 2
Since the wall bears much of the earth pressure and water pressure as circumferential stress, the wall thickness can be thinner than in the case of a rectangular shape.

FIG. 2 shows an embodiment in which the concrete wall 2 is formed into an elliptical cross-sectional shape, and two underground multi-level parking lots A of the embodiment shown in FIG. 1 are connected.

In this case, a partition wall 3 is provided at the center to partition the inside of the concrete wall 2 into two spaces, and this partition wall 3 is also used as a pile as shown in (2).

Next, the invention described in the second claim will be explained.

This invention is a method of constructing the underground multi-level parking garage A according to the first aspect of the invention by using the earth anchor 4 and the caisson construction method.

The construction procedure will be explained with reference to FIG.

First, underground obstacles are removed and concrete 5 is placed on leveled ground to determine the installation location of the earth anchor 4 (1).

From above this waste concrete 5, perform pre-boring according to the ground, and drive the earth anchor 4 containing the prestressed steel material 6 to a position deeper than the construction depth of the bottom plate 1 (II
).

After driving all the earth anchors 4, remove the waste concrete 5 in the area forming the cylindrical concrete wall, excavate the ground to a depth (about 1 to 1.5 m) that will not collapse the soil in this area, A lower blade is formed at the tip of the concrete wall 2 (III). At the same time, a flange-shaped fixing portion of the PC steel material 6 is formed on the inner peripheral side of the lower blade (1).

Here, formwork 8 is assembled at the upper end of the blade lower, and a concrete wall 2 of a certain height is constructed by reinforcing and concrete pouring (■), while the ground on the inner circumference side of the blade lower is excavated (
V).

After drilling, pc! A jack 9 is installed at the fixing part of the 1iia material 6, and the lower blade is sunk by a certain amount by pulling the PCfi material 6 with the jack 9, and after sinking, the extra length of the upper end of the PC steel material 6 is cut (VI).

Continue repeating the steps from ■ to Vf above.■) When the blade lower, that is, the concrete wall 2, has been sunk to a predetermined depth, the jack 9 is removed and the upper end of the PC steel material 6 is fixed, and the inside of the blade lower is Concrete is poured around the perimeter to create the base l, and underground multi-level parking lot A is constructed (■).

The earth anchor 4 buried below the bottom plate 1 is buried as it is, and serves to prevent the underground multi-level parking lot A and above-ground buildings from floating or falling due to groundwater.

[Effects of the Invention] This invention is as described above, and since it is constructed vertically in the basement of a building, it is possible to secure a parking space with a large capacity without interfering with the use of the building site. Also, since the concrete wall is thin, it can be realized at low cost.

[Brief explanation of drawings]

Figures 1-1 and II are a perspective view and a plan view showing a construction example of the first claimed invention, respectively, and Figure 2-1゜■ is a perspective view and a plan view showing another embodiment, respectively. Figures 1 to ■ are the second
It is a schematic diagram showing the construction procedure of the claimed invention. A...Underground parking lot, l...Bottom board,
2... Concrete wall, 3... Partition wall, 4... Earth anchor, 5... Discarded concrete, 6... PC steel material, 7...
・Blade mouth, 8... Formwork, 9... Jacket. Figure - ■ Figure = 1 Figure ■

Claims (2)

[Claims] (1) A multilevel parking lot that is buried vertically below an above-ground structure and provides parking in a vertical circulation manner, with a cylindrical concrete base and a base that has a bottom area that can accommodate at least two cars in parallel. An underground multi-level parking lot characterized by being composed of walls. (2) An earth anchor containing prestressed steel material is buried vertically downward from the periphery of the sacrificial concrete cast in a disk shape on the ground, below the depth of the base construction of a designated underground multi-storey parking lot, and a cylindrical concrete is formed. After removing the waste concrete in the area that will form the wall, excavate the ground to a depth that will not collapse the soil within that area, form a cutting edge at the tip of the concrete wall, and at the same time install the PC steel anchorage. A brim-like shape is formed on the inner circumference of the concrete wall, and a cylindrical concrete wall is constructed at a certain height above the cutting edge, and the PC steel is pulled with a jack installed at the PC steel fixing part. The procedure of lowering the blade to a certain depth is repeated alternately, and the cutting edge is lowered to a specified depth.
A method for constructing an underground multi-level parking lot, which consists of the process of constructing a concrete wall and then pouring concrete on the inner circumference of the cutting edge to create a base.