利用FLAC3D对顺义区某深基坑工程进行了仿真分析，模拟出了桩侧土压力分布曲线，并与经典土压力理论进行了对比，指出桩身位移、锚杆拉力模拟值与实测值更加接近，认为模拟土压力分布曲线更加符合工程实际，提出的粉质粘土地层桩锚支护结构土压力分布形式，对于优化结构设计，降低施工成本具有重要意义。%The paper adopts the FLAC3D to undertake the simulation analysis of some deep foundation pit proiects at Shunyi district,simulates the distribution curve for the soil pressure at the pile sides,has the comparison the technique with the classic soil pressure theory,points out the sim-ulated values of the pile displacement,forces of anchors,are close to the measured ones,concludes the distribution curves adheres to the engi-neering fact,and points out the distribution forms of the pile-anchor soil pressure at silty clay stratum,so it is meaningful for the optimized design and the reduction of construction cost.
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