Foundation pit reinforcing technology from shallow position to deep position for group pit construction

It is a technology of shallow foundation pit first and then deep foundation pit, which is applied in infrastructure engineering, excavation, construction, etc., and can solve the problems that deep foundation pits cannot be constructed first

Inactive Publication Date: 2011-04-27
SHANGHAI CONSTR NO 1 GRP
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  • Abstract
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Problems solved by technology

[0005] The invention successfully solves the technical difficulties encountered in excavating shallow foundation pits first and then diggi

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  • Foundation pit reinforcing technology from shallow position to deep position for group pit construction
  • Foundation pit reinforcing technology from shallow position to deep position for group pit construction

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Embodiment Construction

[0007] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0008] A foundation pit reinforcement technology in which group pits are first shallow and then deep, characterized in that the shallow pit 1 is constructed first, the anti-floating capacity of the shallow pit 1 is increased, and the shallow pit area adjacent to the shallow pit 1 and the deep pit 2 is reinforced with soil 4. Dig deep pit 2 again, and use multiple concrete supports for construction when excavating the deep pit. Increasing the anti-floating capacity of the shallow pit includes setting reinforcement piles 3 in the shallow pit. The soil reinforcement 4 of the shallow pit area adjacent to the deep pit includes the reinforcement of jet grouting piles, and the reinforcement depth is from the bottom of the shallow pit to the depth of reinforcement 5 at the bottom of the deep pit. According to an embodiment of the present invention, the depth...

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Abstract

The invention provides foundation pit reinforcing technology from a shallow position to a deep position for group pit construction. The technology is characterized by comprising the following steps of: constructing a shallow pit; enhancing the anti-floating capability of the shallow pit; reinforcing soil bodies in the shallow pit and a shallow pit region adjacent to a deep pit; and digging the deep pit. The technical problem caused by digging a shallow foundation pit and a deep foundation pit in turn during group pit construction is solved successfully.

Description

technical field [0001] The invention relates to the field of building underground engineering, in particular to a foundation pit reinforcement technology in which group pits are constructed shallower first and then deeper. Background technique [0002] At present, with the increasing development of deep foundation pit construction technology, there are more than one deep foundation pit excavated in a single project, which consists of multiple deep foundation pits. "Practice to ensure the safety of deep foundation pit construction. However, under certain circumstances, if the practice of "deep first and then shallow" still cannot meet the needs of the project, "shallow first and then deep" must be adopted for construction, so that the construction first is not good for the protection of the built structure of the shallow pit. The pressure and deformation control of the dividing wall between the pit and the deep pit is very difficult. Contents of the invention [0003] The...

Claims

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Application Information

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IPC IPC(8): E02D17/02
Inventor 张海荣耿进柱曹春雷李筠王景润徐一博
Owner SHANGHAI CONSTR NO 1 GRP
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