软土深基坑支护技术中的若干土力学问题

Some Soil Mechanics Problems on Supporting Technique of Deep Excavation in Soft Soils

评述了软土深基坑支护结构的现有设计方法，分析了墙的刚度和位移对土压力分布的影响，讨论了地下水对侧压力计算的影响、设计参数的测定与选取以及有限元计算中的一些问题，最后对支护结构的安全评价提出了建议。

In this paper,the routine design method is reviewed for retaining structure ofdeep excavation insoft soils.An analysis has been made forthe influence of the wall rigidity on the earth pressure distribution.The effect of underground water on the lateral pressure,as well as the determination of design parametersand the finite element method used in supporting structure design are discussed.At last,the safetyevaluation on supporting structure is proposed.