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.
关键词
深基坑/桩锚支护/数值模拟/围护桩/变形规律
Key words
deep foundation pit/pile anchor support/numerical simulation/fencing piles/deformation law
维普
万方数据