刚性挡土墙被动土压力的计算及影响分析

动力决于、体力，体位、．在总结被动土压力研究成果的基础上，假定土体为库仑材料，根据极限平衡理论和库仑破坏准则，提出被动土压力的计算通式，并分别用郎肯和库仑土压力理论对该通式进行验证．分析被动土压力的影响因素，认为非饱和土含水量的变化、饱和土中地下水的运移、土的应力历史、挡土墙的刚度和位移、时间等对被动土压力均有很大影响．

A generalized computing equation and influencing factors of passive earth pressure acting on rigid retaining wall

The magnitude of the passive earth pressure is related to a number of factors, such as the physical and mechanical properties of the retaining wall, backfill, the interface between the wall and backfill, and the structure shape of the wall, the amount and direction of the movement,ect,Based on analyses of past findings, a generalized equation for the passive earth pressure which acts on a rigid retaining wall is presented. In this equation, the backfill of the wall is regarded as a Coulomb material, and the Coulomb failure criterion and the theory of limit equilibrium are used. The validity of the equation is certified by both Rankine's and Coulomb's methods for passive earth pressure. Based on intensive analyses, it is advanced that the variation of water content in unsaturated soils, movement of ground water in saturated soils, stress history of soils, rigidity and displacement of the retaining wall and the time are important influence factors to the passive earth pressure.