伺服钢支撑对杭州软土地层地铁深基坑变形的影响研究

依托杭州地铁某深基坑工程，通过对轴力伺服系统及周边环境实测数据进行研究，分析轴力伺服系统在软土地区深基坑中控制基坑变形和保护周边环境的作用，解决复杂环境下软土地层地铁深基坑变形过大的技术难题。结果表明:钢支撑轴力伺服系统能较好地控制基坑变形和减小周边地表沉降，从而保证周边建筑物及管线的安全。

Impact Study on Servo Steel Bracing to Hangzhou Soft Soil Subway Deep Foundation Pit Deformation

Based on a deep foundation pit engineering in Hangzhou metro, through the research of the measured data of axial force servo system and the surrounding environment, the role of axial force servo system on controlling pit deformation of deep foundation pit in soft soil area and protecting the surrounding environment have been analyzed to solve the technical issue of large deformation of soft soil layer subway deep foundation pit under complex environment conditions. The results show that the steel bracing axial force servo system can well control foundation pit deformation and decrease surrounding ground settlement, which ensures the safety of surrounding buildings and pipelines.