Foundation pit slope supporting and reinforcing system and construction method thereof

Abstract

The invention belongs to the technical field of foundation pit reinforcement, and particularly relates to a foundation pit slope supporting and reinforcing system and a construction method thereof.The foundation pit slope supporting and reinforcing system comprises an original building foundation, and the original building foundation comprises a pile top bearing platform, an independent foundation located in the pile top bearing platform and a building column supported by the independent foundation; a jet grouting pile is arranged on the independent foundation, and a miniature steel pipe pile is arranged on a concentric shaft of the jet grouting pile. Compared with the prior art, according to the foundation pit slope supporting and reinforcing system and the construction method thereof, the high-pressure jet grouting piles and the micro piles are combined together to form a concentric combined structure, the comprehensive problems of foundation reinforcement, underpinning, foundation pit supporting, waterproof curtains and the like can be solved at the same time, vertical excavation of a slope can be achieved, the earthwork excavation amount is reduced, and the construction efficiency is improved. Complex engineering conditions such as narrow sites are met, the construction period can be shortened, the construction efficiency can be improved, the cost can be controlled, the construction quality can be improved, and the universal application and popularization value is achieved for similar engineering.

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