能量法在搅拌桩复合地基稳定性分析中的应用

Application of energy analysis method in the stability study of deep mixing composite foundation

本文基于能量原理,不仅考虑了土体内部的应力-应变关系,而且应用了Mohr Coulomb材料相关联流动法则,根据极限分析上限定理,得出了搅拌桩复合地基稳定安全系数计算公式。算例分析表明,该方法对复合地基的稳定性分析具有一定实际意义。

Based on energy analysis method, not only the relationship of stressstrain in the soil but also the flow rule of MohrCoulomb material is considered in this paper. According to upper bound theorem limit analysis, the safety factor of composite foundation stability can be calculated. By an engineering example, the new analysis method has some practical value to the stability analysis of composite foundation.