Deep foundation pit underground grain depot and construction method thereof

Abstract

The invention relates to a deep foundation pit underground grain depot. The deep foundation pit underground grain depot comprises a foundation pit, a plurality of pile bodies and an inner support structure, wherein the foundation pit is in a shape of a drum; the plurality of pile bodies are circularly arranged along the pit wall of the foundation pit and are engaged with each other so as to form a circumferentially-closed retaining wall; the inner support structure is circularly arranged along the inner wall of the retaining wall so as to support the retaining wall from the interior of the foundation pit to soil; and the bottom ends of the pile bodies are supported to the bottom surface of the foundation pit. By adopting the design, the pile bodies are only used as media of a blocking body, side pressure which is applied to the pile bodies by soil around piles is not absorbed by the pile bodies by virtue of counterforce generated by soil which is anchored under the bottom surface of the foundation pit, but the side pressure is transferred to an inner support ring beam, and more side pressure is borne by the inner support structure, so that the effects of strong support and weak piles are achieved. Materials required for absorbing the side pressure of the soil by the additional inner support ring beam are far less than materials required for inserting the pile bodies into the foundation pit.

Description

technical field [0001] The invention relates to a foundation pit supporting structure and a construction method, in particular to an underground grain storage 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 d...

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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