强夯法处理风成砂地基的数值模拟分析

Numerical simulation analysis of treating aeolian sand foundationusing dynamic consolidation method

采用ANSYS/LS-DYNA程序建立三维有限元模型,对强夯法处理风成砂地基的过程进行了数值模拟,分析了风成砂地基的沉降、应力、塑性应变时程曲线等的变化特征,对强夯加固风成砂地基的机理进行了探讨.分析表明,所采用数值方法适用于风成砂地基的强夯处理模拟,同时关于强夯加固风成砂地基的机理得到一些结论,可为工程实践参考.

The Ansys LS-DYNA program was used to establish the 3D finite element model and the numerical simulation of the aeolian sand foundation treatment by dynamic compaction was conducted. The settlement, stress and plastic strain time-history curve of the foundation were obtained and analyzed, and the improvement mechanism was investigated. The analysis showed that the method was fit for the simula- tion of the aeolian sand foundation treatment by dynamic compaction. The results on the improvement mechanism were obtained, and could become a reference for engineering practice.