某超深沉井不排水开挖数值模拟分析

Numerical Simulation Analysis on Undrained Excavation of Ultra-deep Open Caisson

摘要:

南京某沉井项目采用了下沉式竖井掘进施工方法（VSM），为国内的首次运用。本文基于MIDAS GTS NX有限元分析软件，对其掘进过程进行了数值模拟，模拟结果与监测数据吻合良好，为以后此工法的运用提供了参考。

Abstract:

A vertical shaft sinking construction method (VSM) was adopted in an open caisson project in Nanjing. This process is the first application in China. Based on the MIDAS GTS NX finite element analysis software, the numerical simulation of vertical shaft sinking process is carried out. And compared with the practical monitoring data, its construction influence is analyzed. The result shows that the simulation data are in good agreement with the monitoring data, which provides a reference for the application of this construction method in the future.