作　　者： ; ; ; ;

机构地区： 浙江大学建筑工程学院土木工程学系

出　　处： 《中国公路学报》 2005年第2期24-27,共4页

摘　　要： 改进了极限平衡理论,用于非极限状态主动土压力的研究。对挡土墙后滑动楔体的片体单元进行了分析,建立了关于非极限状态主动土压力强度的一阶微分方程,得到了平动变位模型下,非极限状态主动土压力强度、土压力合力和土压力合力作用点的理论公式,将计算所得结果与模型试验数据进行对比分析。结果表明:墙体平动变位模式下非极限状态主动土压力强度、土压力合力和土压力合力作用点理论公式的计算结果与已有模型试验结果基本吻合。 The limit equilibrium theory is improved, and used in the research of active earth pressure under non-limit state. The equilibrium of force on the slice taken out from wedge is analyzed and the differential equation of first order is set up. The theoretical answers to the unit earth pressures, the resultant earth pressures and the points of application of resultant earth pressures on retaining wall under non-limit state are obtained for the mode of translation. Comparison is made among the formula presented here and some experimental observations. It is demonstrated that the unit earth pressure, the resultant earth pressure and the points of application of resultant earth pressure on retaining wall under non-limit state for the mode of translation have a good agreement with those of the experimental observations.

关 键 词： 道路工程 挡土墙 改进极限平衡法 主动土压力 平动模式 非极限状态

领　　域： [交通运输工程]