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根据平移模式下的微元滑裂体水平面上的剪力为零的条件和土拱效应,获得受填土内摩擦角和墙土摩擦角影响的非极限滑裂面倾角和非极限主动土压力系数,其中,非极限填土内摩擦角和墙土摩擦角是墙体位移的函数。根据非极限水平微元滑裂体的静力平衡,得到平移模式下考虑土拱效应和位移影响的非极限主动土压力计算式。参数影响分析表明:非极限滑裂面倾角和非极限主动土压力系数均随非极限墙土摩擦角的增大而增大;非极限主动土压力系数和非极限主动土压力均随侧向位移比的增大而减小;非极限主动土压力分别随着非极限填土内摩擦角、非极限墙土摩擦角的增大而减小。理论值及试验值的对比结果显示:相较于其他方法,本文方法的非极限主动土压力理论值与试验值吻合更好。
According to the zero shear force and the soil arching effect on the horizontal plane of the microseismic slipping body in the translational mode, the dip of the non-limit slip plane affected by the internal friction angle of the soil and the friction angle of the soil wall and the active earth pressure Coefficient, where the non-limit fill internal friction angle and wall friction angle is a function of wall displacement. According to the static equilibrium of the non-limit-level microseismic slide, the formula of the non-limit active earth pressure considering the effect of soil arching and displacement under translational mode is obtained. The parameter influence analysis shows that both the non-ultimate slip surface inclination angle and the non-limit active earth pressure coefficient increase with the increase of the non-limit wall soil friction angle. The unsafe active earth pressure coefficient and the non-limit active earth pressure both vary with the lateral displacement The ratio of non-limit active earth pressure decreases with the increase of non-limit soil friction angle and non-limit earth friction angle respectively. The comparison between the theoretical and experimental results shows that compared with other methods, the theoretical value of the non-limit active earth pressure in this paper is in good agreement with the experimental value.