Numerical Simulation on Top-down Construction Method of Subway Station in Hefei

摘要

The top-down construction method has complex construction organization and many courses. Whether on theory or practice, quite a lot of problems need to be solved. In this paper, researchers used the finite element program Midas GTS to simulate THE foundation pit excavation of subway station in Hefei which used top-down construction method. The purpose is to research the regulation of the ground settlement and deformation of retaining structure. According to the theoretical data, researchers can know what time and where the maximum of the horizontal deformation of retaining structure and ground settlement may appear. Researchers may predict the risk and take measures to prevent accidents. All of it will provide the theoretical data to serve engineering practice.