Stress and Deformation Analysis of Metro Station Key Areas Constructed with Semi-reverse Method of Cover and Excavation

The semi-reverse method of cover and excavation is adopted for the construction of May Fourth Square Station in Qingdao metro. Software Plaxis is used to establish a sling pile model, then analyze its stress and deformation conditions. The MIDAS GEN software is used to analyze the complicated stress of concrete filled steel tubular column. The result of simulation analysis and checking shows that stress and deformation of the concrete filled steel tubular columns and the sling pile could meet all the requirements.