城市明挖隧道基坑施工监测分析

Monitoring and Analysis of Foundation Pit Excavation of City Open-cut Tunnel

以南京市城市快速内环东线二期工程一标段为例,通过对施工监测过程中的钢支撑轴力、周边建筑物沉降、深层土体水平位移等监测数据进行分析对比,探讨了影响基坑及周边环境安全的主要影响因素,得出一些开挖过程中支撑轴力和深层土体水平位移的变化规律。

Taking a section of the second-stage to the city eastern fast internal ring road in Nanjing as an example,the paper analyzed and compared the steel bracing axial force,the surrounding buildings settlement and the soil horizontal displacement monitoring data in the process of the construction monitoring,discussed the main influence factors to the safety of foundation pit and the surrounding environmental,draw some change law of the bracing axial force and the horizontal displacement of deep soil in the excavation process.