NUMERICAL ANALYSIS OF STRESS AND DEFORMATION CHARACTERISTICS IN PILE-SUPPORTED DEEP EXCAVATIONS
As excavation in foundation pit engineering advances to greater depths,the complexity of the soil distri-bution and supporting structure design increases.This study focuses on a deep foundation pit project in Kunming,us-ing finite element numerical simulation to analyze the stress and deformation patterns during the excavation process.It investigates the variations in horizontal displacement of support piles,bending moments in the piles,bottom heave,and surface settlement.The findings indicate that both horizontal displacement and bending moments of the support piles increase with excavation depth(H).The maximum horizontal displacement occurs at 0.85H,and the maximum bending moment is at a depth of-14.5 meters in the pile.Bottom heave evolves from a"convex"shape to an"M"shape,with a maximum heave of 47.4 mm.Surface settlement shows a"V"shape distribution,with the maxi-mum settlement occurring 0.3H from the pit edge.
deep foundation pitpile anchor supportnumerical simulationfencing pilesdeformation law