刚性挡土墙非线性主动土压力分析

挡土墙后土压力分布受许多因素影响，多数情况下为曲线型。墙后土楔体达到极限平衡状态时，滑裂面形状一般也不是平面。作者运用条分法分析曲面滑裂面下墙背直立刚性挡土墙上主动土压力分布，并同库仑土压力计算结果进行比较。可以看出，库仑主动土压力偏小，只有当挡墙面光滑时，分布才为直线型。

Nonlinear Analysis of Active Earth Pressure on a Rigid Retailing Wall

The distribution of earth pressure on a retailing wall is influenced by many factors,and in many cases,it is nonlinear.When the sliding mass behind a retailing wall attains limiting equilibrium condition,the shape of sliding surface is usually not linear.In this paper,a nonlinear earth pressure distribution solution is proposed under the condition of curvilinear sliding surface,which is deduced by the slice method,and it is also compared with the results from Coulomb's earth pressure theory.It can be seen that Coulomb's active earth pressure is much less,and only when the surface of retailing wall is smooth and the distribution of earth pressure would be linear.