Numerical Simulation of Retaining Stability of Deep Foundation Pit Based on Seepage Stress Coupling Model
This study aims to explore the influence of different excavation depths and support parameters on the stability of deep foundation pit support in buildings,taking a building as the research object,the building adopts a composite support structure of double row piles and 3 rows of prestressed anchor cables.Based on the geological conditions,a finite element model coupled with seepage stress was constructed.Numerical simulation analysis was conducted on the stability of foundation pit support under different excavation depths and support parameters using PLAXIS finite element software.The results indicate that as the excavation depth increases,the horizontal displacement and bending moment of the support structure gradually increase,and the stability decreases.but still has good stability;increasing the embedding depth and pile diameter of the support pile can effectively reduce horizontal displacement and bending moment.the optimal embedding depth of the profect is determined to be 10m,the optimal pile diameter is 1.1m,and the control row spacing does not exceed 4.0m.
seepage stresscoupling modeldeep foundation pitsupportstability
NETL
NSTL
万方数据
维普
