Deep foundation pit underground garage and construction method thereof

Abstract

The invention discloses a deep foundation pit underground garage. The deep foundation pit underground garage comprises a foundation pit, a plurality of pile bodies, and an inner support structure, wherein the foundation pit is in the shape of circular barrel; the pile bodies are arranged in annular mode along the pit wall of the foundation pit, and are engaged with one another to form a peripherally sealed retaining wall; the inner support structure is arranged in the annular mode along the inner wall of the retaining wall; the inner part of the foundation pit faces towards a soil body to support the retaining wall; and the bottom ends of the pile bodies are supported on the bottom surface of the foundation pit. With the adoption of the design, the pile bodies are only used as media of a retaining body, the pile bodies do not depend on the soil body anchored under the bottom surface of the foundation pit to generate counter-acting force to absorb side pressure, applied to the pile bodies, of the soil body outside the pile bodies, but transmit the side pressure to an inner support ring beam, and the inner support structure bears more side pressure, so that the effects of strong support and weak piles are achieved. Materials needed for absorbing the side pressure of the soil body by additionally arranging the inner support ring beam are much less than materials needed for inserting the pile bodies into the foundation pit. With the design, the deep foundation pit underground garbage is less in material consumption and is lower in cost on the premise of realizing same soil-retaining capacity.

Description

technical field [0001] The invention relates to a foundation pit support structure and a construction method, in particular to an underground garage for a deep foundation pit and a construction method thereof. Background technique [0002] At present, with the development of society, urban land resources are becoming more and more scarce. When the buildings above the ground cannot meet people's needs, it will lead to more and more demands for the use of underground space. The current underground space wants to expand the utilization rate. It can only expand its own area horizontally, or increase the depth of underground space vertically. In modern cities, it is obviously impossible to expand the area of ​​underground space horizontally, and it will affect other urban buildings, which makes it difficult to increase the depth of underground space vertically. Depth has been paid more and more attention by architects. At present, most of the deep foundation pits are designed to...

AI Technical Summary

Problems solved by technology

Therefore, in the prior art, the retaining wall structure in which the pile body is inserted below the soil at the bottom of the foundation pit is a retaining wall structure with many consumables and high cost.

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