Study on the Influence of Deep Foundation Pit Excavation on Adjacent Subway Station in Karst Area
Based on the karst area foundation pit construction project of the south third ring transfer station of Xuzhou Metro Line 4,this paper adopts the research method of combining numerical simulation with engineering practice,and deeply discusses the control problem of deep foundation pit deformation in karst area and the influence of foundation pit construction on the stability of adjacent existing subway stations.By establishing a three-dimensional numerical model,the whole process of foundation pit excavation is simulated,and the deformation law of foundation pit and adjacent existing subway station before and after karst cave treatment is analyzed.The results show that the effective treatment of the karst cave can significantly reduce the horizontal displacement of the retaining pile and the vertical displacement of the adjacent subway station,which further verifies the necessity of the treatment of the karst cave and provides the corresponding reference value for the construction of similar projects in the future.
karstmass transit railway stationdeep foundation pitnumerical simulation
NETL
NSTL
万方数据
