NUMERICAL ANALYSIS ON DEEP FOUNDATION ENGINEERING IN YINGKOU COASTAL AREA IN LIAONING PROVINCE

Soil large deformation of supporting structure and the surrounding deformation of excavation in soft soil area,for a deep foundation pit engineering in Yingkou is simulated by the finite element analysis software Midas,and combined with the engineering example of monitoring data,it is verified the numerical simulation results accuracy. Simulation of the displacement of each node data through the numerical analysis,summary of retaining structure with double row piles and cement soil retaining wall structure of steel supporting the corresponding soil retaining wall around the top displacement and settlement displacement variation,the results show that: 1It exists the spatial effect of deformation of foundation pit engineering,but the excavation depth is small,the spatial effect is not obviously; 2There is relationship between the excavation the supporting structure deformation of retaining wall and the fiexural rigidity and the increase of excavation depth,the deformation of foundation pit is caused by excavation depth and reduce the structural stiffness; 3There is obvious effect of control the deformation of foundation pit anchor structure. According to the different situations in the future,We should give full play to reduce the deformation capacity of cable structure.