深基坑工程施工对紧邻既有地铁的保护技术研究

Research on Protective Techniques for Adjacent Existing Subways During Deep Foundation Pit Construction

上海市静安区95号C地块项目地处繁华市中心,同时与地铁7号线相邻,最小距离仅10.8 m,周边环境复杂,基坑施工阶段控制基坑、地铁及周边环境变形尤为关键。通过系统研究,在进行深基坑建设时,采取地下槽壁加固、优化开挖方式以及混凝土支撑伺服系统等施工技术方案来保障地铁线路的正常运行,对以后的地铁沿线深基坑工程具有重要的借鉴意义。

The 95#C block project in Jing'an District of Shanghai is situated in the bustling city center,adjacent to Metro Line 7,with a minimum distance of only 10.8 meters.The surrounding environment is complex,making it crucial to control the deformation of the foundation pit,the subway,and the surrounding environment during the construction stage.Through systematic research,techniques such as diaphragm wall reinforcement,optimized excavation methods,and concrete support servo systems are implemented to ensure the normal operation of subway lines.These techniques provide valuable reference for future deep foundation pit projects along subway lines.