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将Lade-Duncan破坏准则应用于求解挡土墙上的主动土压力,在平面应变状态下,通过在π平面上采用与Lade-Duncan破坏准则等效面积的Drucker-Prager破坏准则,且借助等效内摩擦角的概念,提出了计算挡土墙上主动土压力的新方法,并与传统的库仑法、朗肯法和有限元数值模拟等计算结果进行了比较。结果表明:该方法计算过程简便,计算结果准确,是计算挡土墙上主动土压力的合理方法,有一定的工程实用价值。
The Lade-Duncan failure criterion is applied to solve the active earth pressure on the retaining wall. Under plane strain condition, the Drucker-Prager failure criterion with equivalent area to the Lade-Duncan failure criterion in the π plane is adopted, The concept of internal friction angle is put forward. A new method of calculating active earth pressure on retaining wall is put forward and compared with the traditional coulometry, Rankine method and finite element numerical simulation. The results show that the method is simple and the calculation result is accurate. It is a reasonable method to calculate the active earth pressure on the retaining wall and has certain engineering practical value.