地铁隧道旁基坑组合围护施工探索

Exploration into Construction of Combined Bracing of Foundation Pit beside the Subway Tunnel

上海闸北某基坑工程邻近高级住宅楼,东临地铁线隧道,基坑开挖难度大。采用包括钻孔灌注桩加水泥土搅拌桩,地下连续墙组合围护,深井降水等措施,成功地完成了该基坑的施工。文章对土方的支护、开挖和监测作了探讨,并提出设计及施工中的一些体会和建议。

One foundation pit project in Zhabei District,Shanghai is close to highgrade residential buildings,and faces the subway tunnel on the east,so there is great difficulty in the excavation of the foundation pit.The construction of the foundation pit is successfully completed by combined bracing of bored piles,soil-cement mixed piles,and underground continuous wall,deep well dewatering,and other measures.This article probes into the support,excavation and monitoring of earthwork,and puts forward some experience and suggestions in the design and construction.