NUMERICAL SIMULATION AND FIELD DEFORMATION MONITORING ANALYSIS OF THE FOUNDATION PIT RETAINING STRUCTURE OF SHIELD WELL
Taking the foundation pit of shield well in Xuzhou as the research object,the horizontal defor-mation monitoring scheme of foundation pit retaining structure is formulated,and the dynamic law of horizontal deformation and excavation depth of retaining structure in the process of foundation pit excavation is emphatically analyzed.Through the finite element numerical model,the dynamic simulation analysis of the excavation process of the foundation pit is carried out,and the theoretical value of the numerical simulation is compared with the field monitoring results.The results show that the finite element calculation results are in good agreement with the field monitoring results,which proves that the calculation model is reasonable.The excavation depth of the foundation pit and the horizontal deformation value of the pile body are approximately linear.The maximum horizontal displace-ment of the pile is 1～2 m above the bottom of the soil pit.Prestress and rock can effectively limit the horizontal dis-placement of the pile.
foundation pit of shield wellretaining structurenumerical modeldeformation monitoring
NETL
NSTL
万方数据
