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本文探讨了地震主动土压力沿墙高的分布规律.根椐“惯性力法”原理,利用“卡岗”的分析方法,解得地震主动土压力沿墙高非线性分布的计算公式和合力以及合力作用位置的计算公式.公式与现有的“直线法”相比,具有几乎相同大小的总压力值和明显不同的合力作用点位置.对砂性土,合力作用点位于墙底以上(0.4～0.5)H,与国外多数动力试验研究结果一致.
This paper discusses the distribution law of active earth pressure along the wall height. Based on the principle of “inertial force method” and the method of “kakong”, the method for calculating the nonlinear distribution of active earth pressure along the wall is derived. Formulas and formulas for calculating the positions of forces and resultant forces. The formulae have almost the same size of total pressure value and distinctly different resultant force point positions compared to the existing “straight line method.” For sandy soil, the resultant force point Located at the base of the wall (0.4-0.5) H, which is consistent with the majority of foreign power test results.