【摘要】 基于滑楔理论计算土压力的基本原理,运用考虑中间主应力效应的统一强度理论,对传统的土压力公式不能反映土体材料强度的中间主应力效应的公式进行了改进,推导了基于滑楔理论的土压力统一解公式,Coulomb和Rankine土压力公式为其特例。通过变换统一强度参数,可获得一系列的解。在工程运用中可根据土质和工程的实际情况,适当选择统一强度参数和应力状态来确定土压力的大小。更多还原

【Abstract】 The paper presents the results of the unified solutions related to the theory of earth pressure of sliding wedge,based on the Yu Mao-hong’s unified strength theory in which the effect of the intermediate principal stress is considered. The formulas deduced in this paper can be widely applied in geotechnical engineering. The solutions of Rankine and Coulomb are special cases of the unified solutions.A series of unified solutions can be obtained by adopting different values of and stress state parameters.So earth pressure can be calculated effectively by selecting suitable value of adapting to the real conditions.更多还原