软土地基塑流分析研究

Research on Plastic flow analysisof soft soil foundation

本文通过详细的理论推导证明：以往工程设计对软土地基采用塑流分析确定地基稳定性的方法，与非线性有限元法用应力水平判断地基应力状态概念相同，并且后者应力计算更为合理，结果更为明确。由于纠正了原塑流分析中存在的问题。

The detailed theory inferred and proven in this paper that the method which used the plastic flow analysis to define the stability of soft soil foundation for the previous projects has the same conception with that means which uses stress horizon in non-linear finite element method (FEM) to determine the stress state of the foundation,furthermore,the stress computation of the latter is more rational and the result is more definite.The problems in the former plastic flow analysis have been solved,therefore,some certain instruction function has been fulfilled in the computation analysis for the later projects.