Research on Selection of Support Structural Type for Deep Foundation Pit in Wuhan Metro Station

Metro station and metro tunnel are two main parts of metro construction project.The design and selection for deep foundation pit engineering of the metro station should be determined comprehensively by engineering environment,including the hydro geological condition,the surrounding buildings,underground pipelines,the characteristics and requirement of supporting type.safe,economic and rational design scheme can be then achieved.According to several typical stations of deep foundation pit engineering design scheme analysis in the first phase of Wuhan Metro Line 2,this paper further clarified the problems,which should be noticed under construction and the selecting method on the deep foundation pit supporting type in the metro station construction.