岩土力学Issue(z1)：245-250,6.
黏性土填料下考虑土拱效应的挡土墙被动土压力计算
Calculation of passive earth pressures on retaining wall considering soil arching effects of backfill clayey soil
摘要
Abstract
The nonlinear phenomenon which the passive earth pressure behind the retaining wall of both sand and cohesive soil is nonlinear distribution could be explained by the soil arching effect theory. The formula which calculated passive earth pressure coefficient of which assumed the stress state method and the soil wedge static equilibrium method were derived considering the soil arching effect, assumed arch as circle and the angle of slip surface as Rankine’s theory. Then, the distribution of lateral earth pressure considering the soil arching was derived by the above formulations; also the formulas that calculating the magnitude and the point of application of lateral passive earth pressure were derived. The accuracy of proposed method is confirmed by comparing with the experimental tests and values from existing equations. Finally, the trends of distribution and the height of total passive earth pressure of clayey soil are studied; distribution of passive earth pressures considering the soil arching is likely an exponential curve; and the height of resultant earth pressure point is gradually reducing with increasing the ratio of soil-wall friction angle to internal angle δ/φ.关键词
挡土墙/被动土压力/土拱效应/应力状态法/静力平衡法Key words
retaining wall/passive earth pressure/soil arching effect/stress state method/static equilibrium method分类
建筑与水利引用本文复制引用
周晓龙,马亢,钱明,刘德稳,赵琦..黏性土填料下考虑土拱效应的挡土墙被动土压力计算[J].岩土力学,2014,(z1):245-250,6.基金项目
国家自然科学基金资助（No.51209180）；浙江省自然科学基金资助（No. Y1091175）。 （）
