南京四桥南锚碇深基坑施工安全监控研究

以南京长江第四大桥南锚碇基础为背景工程，对超大“∞”字形地连墙深基坑进行数字仿真模拟、监测成果分析。主要对地下连续墙深层水平侧向变形和地连续墙受力进行模拟与实测，并进行了对比分析，得出“∞”字形深基坑地连墙变形及应力分布规律，模拟与实测是比较一致的，并肯定了数字仿真模拟对工程施工的参考指导作用。

Case Study on Safety Monitoring during Construction of Deep Foundation Pit of South Anchorage of Nanjing Fourth Yangtze River Bridge

Numerical simulation and monitoring are made for the extra-large ＂∞＂-shaped deep foundation pit of the south anchorage of Nanjing Fourth Yangtze River Bridge in aspect of deep horizontal lateral deformation and stress distribution of the diaphragm walls.The numerical simulation results are compared to the monitoring results,which results in the deformation rules and stress distribution rules of the diaphragm walls.The simulation results agree well with the monitoring results,which confirms the guidance of numerical simulations to project construction.