中文摘要：

针对地下连续墙等柔性挡土结构,根据土体的渐进破坏机制,建立了非极限状态下改进的库仑土压力公式,并推导了填土内摩擦角及墙土接触面上外摩擦角的发挥与土体位移的非线性关系。将这一公式运用到改进的弹性抗力法中,得到了一种新的考虑位移的柔性挡墙上土压力计算方法。算例分析表明,模型板上土压力计算值和试验实测值吻合得较好。该计算方法可用于柔性挡墙的设计及验算。

英文摘要：

Based on the progressive rupture mechanism in the backfill,the modified Coulomb＇s solution of earth pressure against flexible retaining wall is developed;and the nonlinear relationships between the wall movement and the angles of internal friction and wall friction are derived.It is applied to an improved solution for beam on a nonlinear elastic foundation.So that a new calculation of earth pressure against flexible retaining wall considering displacement is obtained.Comparisons of the calculated results with observations from model test show that the calculated results of the earth pressure has a satisfying agreement with the observations.This calculation can give some references to design of flexible retaining wall.