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基于经典库伦理论,建立在条形荷载作用下滑动土楔体处于主动极限状态时的静力平衡模型。按微分学求极值的方法,导出了滑裂角解析解;以力系及力矩系平衡条件,推出了主动土压力及其作用点位置解析解;通过单因素及多因素影响分析法,明确了荷载参数、土体参数与土压力值及其作用点位置之间彼此影响,以及相互制约的规律。为研究露天矿边坡工程中重力式挡土结构的设计及主动土压力计算提供了理论依据。
Based on the classical Coulomb theory, the static equilibrium model of the wedge sliding body in the active limit state under the strip load is established. According to the method of deriving the extreme value of differential theory, the analytic solution of the slip-crack angle is deduced. With the equilibrium conditions of force system and moment system, the active earth pressure and the analytic solution of its action point position are introduced. Through the single-factor and multi-factor impact analysis methods, The influence of load parameters, soil parameters and earth pressure on the interaction between each other and their interaction points, as well as the rules of mutual restraint are discussed. This study provides a theoretical basis for the design of gravity retaining structure and calculation of active earth pressure in the open pit slope engineering.