Integration system and method of body and supporting structure of foundation pit

Abstract

The invention provides an integration system and method of a body and a supporting structure of a foundation pit. According to the integration system and method of the body and the supporting structure of the foundation pit, firstly, a first underground body structure of a certain width is formed around the foundation pit, after the first underground body structure is constructed and maintained todesign strength, the first underground body structure is directly used for being combined with an outside enclosure wall, the integration of the first underground body structure and the outside enclosure wall is used as the enclosure system of a later-period middle foundation pit digging, and after the surrounding integrated enclosure system is constructed, earthwork in the to-be-excavated area in the middle is excavated out in a heavy excavation manner. By the adoption of the integration method of the body and the supporting structure of the foundation pit, it is avoided that a large numberof temporary supports are erected in the foundation pit, so that the construction cost of the project is greatly reduced; and meanwhile, the surrounding first underground body structure and the outside enclosure wall are integrated to be used as the enclosure system of the foundation pit, so that the problem that flowing deformation of remaining soil around the foundation pit causes excessively large deformation of the foundation pit is avoided, and foundation pit surrounding environment protection is facilitated.

Description

technical field [0001] The invention relates to an integrated system and method for a main body and a supporting structure of a foundation pit. Background technique [0002] For ultra-large foundation pits with large areas and deep depths, if the slab support + internal support enclosure system used in conventional foundation pits is used, the following problems will occur: [0003] Firstly, the support system in a large-area foundation pit requires a large amount of temporary reinforced concrete or steel support, which will push up the cost of the entire project; secondly, the length of the support is too long, and the slenderness ratio is too large, resulting in a serious weakening of the rigidity, which cannot provide enough support for the enclosure wall. Reaction force; once again, the support length is too long, and under the action of axial force, its own compression deformation reaches several centimeters or even tens of centimeters, which leads to excessive deformat...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an integrated system and method for the main body of the foundation pit and the support structure, which can solve the problem of the high cost of the existing foundation pit enclosure system, the inability to provide sufficient reaction force for the enclosure wall and the failure of the support structure risky problem

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