运用Plaxis有限元软件对某深基坑桩锚支护结构进行了开挖过程的模拟,并对围护桩水平位移及锚索内力的计算值与实测值进行比较分析。结果表明:支护结构的位移及内力都处于可控状态,桩锚支护结构用于宽大深基坑是可行的;围护桩水平位移计算值与实测值的变形曲线基本一致,锚索内力的变化趋势基本相同,通过Plaxis进行的基坑开挖模拟计算是可行的。 Plaxis finite element software was used to simulate the excavation process of the pile-anchor supporting structure of a deep foundation pit. The calculated displacements and internal forces of the anchorage pile were compared with the measured values. The results show that the displacement and internal force of supporting structure are in controllable state, and the pile-anchor supporting structure is feasible for deep foundation pit. The deformation curve between the calculated value of horizontal displacement of retaining pile and the measured value is basically the same, The trend of change is basically the same, and the simulation calculation of foundation pit excavation by Plaxis is feasible.