Based on the damage mechanics of soil and using ABAQUS software, considering the failure mechanism of soil under dynamic compaction, the geometric nonlinear and material nonlinear axisymmetric finite element method with large deformation for simulating the formation course of stone column under consecutive impact loading is established. From comparison and analysis for the results of model test and numerical simulation, the formation course of stone column and soil deformation course are obtained. The effect of area of failure to next dynamic compaction on stone column for every compacting is taken into account when simulates the formation progress. The depth development of stone column with compaction numbers is analyzed under different conditions such as compaction energy, cushion thickness and hammer diameter. The shape of stone column is described in every compaction loading, and its spatial distribution could be predicted successfully. The achievement of this paper will be helpful to similar engineering practices.%根据土体损伤力学,考虑在冲击荷载作用下土体失效机制,建立了基于ABAQUS软件的连续强夯碎石墩形成过程的大变形非线性轴对称有限元方法.根据室内模型实验和数值模拟对比研究,考虑了每一次冲击荷载下土体失效区域大小对下一击碎石进入土体的影响,得到了每次强夯作用下碎石墩性状和土体变形过程,分析了主要影响因素如不同夯击能、垫层厚度以及锤径条件下夯击次数与碎石墩高度之间的关系.本文结果对强夯工程实践具有指导作用.
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