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Supporting structure of ultra-deep pipe gallery foundation pit and construction method thereof

A technology for supporting structures and foundation pits, which is applied in infrastructure engineering, excavation, construction, etc., can solve the problems of restricting mechanized operations, reducing excavation efficiency, and increasing earthwork volume, so as to reduce the amount of earthwork excavation and shorten the construction period , The effect of improving work efficiency

Inactive Publication Date: 2018-10-12
CHINA MCC17 GRP
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Problems solved by technology

The cost of ultra-deep foundation pit support for urban underground comprehensive pipe gallery accounts for about 60% of the total construction cost. If all slope excavation is used, the amount of earthwork will increase greatly. If all bored piles are used for support, the support between piles will It will greatly restrict mechanized operations and reduce excavation efficiency

Method used

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  • Supporting structure of ultra-deep pipe gallery foundation pit and construction method thereof

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Embodiment Construction

[0025] The present invention will be described in further detail below in conjunction with accompanying drawing, so that those skilled in the art can understand more clearly, as figure 1 As shown, the support structure of the ultra-deep pipe gallery foundation pit of the present invention includes: the support structure is divided into a slope support section and a concrete pouring pile support section from top to bottom.

[0026] The grading support section is excavated from the ground 1 to form a first-level side slope 2, two first horse paths 3, a second-level side slope 4, and two second horse paths 5 from top to bottom; The slope top of the first level slope 2 is connected to the ground 1, and the edge of the first carriageway 3 is respectively connected to the bottom of the first level slope 2 and the top of the second level slope 4, and the bottom of the second level slope 4 Connect the outer edge of the second horseway 5; the first-level slope 2, the first horseway 3, ...

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Abstract

The invention discloses a supporting structure of an ultra-deep pipe gallery foundation pit and a construction method thereof, and relates to the field of pipe gallery foundation pit construction. According to the supporting structure, a slope support and a cast-in-place pile support are combined and applied to the ultra-deep pipe gallery foundation pit, the support structure is divided into a slope-laying support section and a concrete cast-in-place pile support section from top to bottom, so that the problem that the earth excavation amount is large when a side slope support is adopted singleness is avoided, and the problem that safety cannot be guaranteed when a cast-in-place pile support is adopted singleness is avoided. The supporting structure of the ultra-deep pipe gallery foundation pit and the construction method of the supporting structure of the ultra-deep pipe gallery foundation pit are high in operability, the supporting cost of the ultra-deep foundation pit is reduced, and the construction period is remarkably shortened.

Description

technical field [0001] The invention relates to the field of foundation pit support, in particular to a support structure for an ultra-deep pipe gallery foundation pit and a construction method thereof. Background technique [0002] my country's underground comprehensive pipe gallery has achieved rapid development in recent years. The importance of underground comprehensive pipe gallery has gradually been recognized by more and more cities. Underground comprehensive pipe gallery has become an indispensable supporting municipal facility for cities. Underground comprehensive pipe gallery The corridor is usually built at about 8m underground, and when the underground comprehensive utility corridor conflicts with other planned municipal facilities, the construction depth of the underground comprehensive utility corridor is often reduced. Generally, the utility corridor will be built at 20m underground in such cases. The cost of ultra-deep foundation pit support for urban undergro...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04
CPCE02D17/04
Inventor 林涛姚海王琦马晓伟
Owner CHINA MCC17 GRP
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