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基于朗肯土压力理论,假定填土的内摩擦角与该点土体位移呈非线性关系,进而提出挡土墙的主动和被动土压力的计算模式。该模式随位移变化是连续的,且能考虑墙土间的摩擦的影响。又将其与砂土模型试验结果进行了对比分析,吻合较好,从而证明用该计算模式计算其主动或被动土压力是合理的。此外,根据该计算模式,导出了一种有效估算其静止土压力系数的计算方法。
Based on Rankine’s theory of earth pressure, it is assumed that the internal friction angle of fill is nonlinear with the displacement of soil at this point, and then the calculation model of active and passive earth pressure of retaining wall is proposed. The mode is continuous with the displacement, and can consider the friction between the wall and the soil. The result of sand model test is compared with that of sand model test, and the result is in good agreement, which proves that it is reasonable to calculate the active or passive earth pressure by this model. In addition, based on this calculation model, a method for calculating the coefficient of static earth pressure effectively is derived.