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假定挡墙后填土沿墙高任一点处侧压力与其水平位移成线性关系,将土体看作是一系列弹簧和理想刚塑体的组合体。在此基础上,分析了挡墙位移模式,改进了Coulomb理论,提出了不同位移模式下刚性挡墙主动土压力非线性分布计算方法。该方法计算合力大小和Coulomb理论计算相等,主动土压力分布和合力作用点位置随挡墙位移模式变化而不同,计算结果和实测结果吻合较好。该方法对刚性挡墙土压力计算具有理论价值。
Assuming that the lateral pressure at the backfill wall of the retaining wall is linear with the horizontal displacement at any point along the wall, the soil body is considered as a combination of a series of springs and an ideal rigid plastic body. Based on this, the displacement model of retaining wall is analyzed and the Coulomb theory is improved. The calculation method of nonlinear distribution of active earth pressure of rigid retaining wall under different displacement modes is proposed. The method of calculating the resultant force is equal to the calculation of Coulomb theory. The distribution of active earth pressure and the location of resultant force point vary with the displacement mode of the retaining wall. The calculated results are in good agreement with the measured results. The method is of theoretical value for earth pressure calculation of rigid retaining wall.