湿陷性黄土地基强夯处治方案优化分析

Optimization of Dynamic Compaction Treatment Scheme for Collapsible Loess Foundation

利用有限元计算分析的方法优化湿陷性黄土地基强夯处治施工参数,并结合现场检验结果分析其合理性。根据有限元数值模拟分析计算结果,确定最佳夯击次数为7次,夯击能为2000 kN·m。结合施工现场试验结果得出强夯后地基土承载力达到了设计要求,消除了黄土的湿陷性,说明采用有限元分析方法确定的施工参数合理,达到了预期加固效果。

This paper used the finite element calculation analysis to optimize the construction parameters of the dynamic compaction treatment for the collapsible loess foundation,and combined with the field test results,the rationality of this method was analyzed.According to the calculation result,the optimal compaction times were 7 times and the compaction energy was 2000 kN·m.From the test results in the construction field,it was concluded that the bearing capacity of the foundation soil after the dynamic compaction reached the design requirement,and the collapsibility of the loess was eliminated,indicating that the expected reinforcement effect has been achieved.