摘要
为了研究降雨入渗条件下路基边坡稳定性,采用非饱和土强度理论和改进的最小势能法,分析了渗流力、基质吸力及吸力摩擦角对边坡稳定性的影响。结果表明:边坡在降雨渗流力作用下,安全系数减少,稳定性降低;改进的最小势能法与Bishop、Jabu法计算结果误差在10%以内;随着基质吸力、吸力摩擦角变化路基边坡的安全系数变化趋势与工程实际吻合。该法不需划分条块及迭代,便于在工程应用。
In order to study the stability of sub-grade slope under rainfall infiltration condition, the influence of seepage force, matric suction and suction friction angle on slope stability was analyzed by using unsaturated soil strength theory and improved minimum potential energy method. The results show that under the action of rainfall seepage force, the safety factor and stability of the slope are reduced, the error between the improved minimum potential energy method and the Bishop, Jabu method is less than 10%, and the change trend of the safety factor of the sub-grade slope with the matrix suction and suction friction angle is in good agreement with the engineering practice. The method does not need to be divided into blocks and iterations, and is convenient for engineering application.
作者
温运祥
刘婵
WEN Yun-xiang;LIU Chan(Architectural Engineering Institute,Zhejiang Guangsha College of Applied Construction Technology,Dongyang Zhejiang 322100,China)
出处
《萍乡学院学报》
2019年第6期16-21,共6页
Journal of Pingxiang University
关键词
路基工程
渗流力
最小势能法
稳定性
sub-grade engineering
seepage force
minimum potential energy method
stability
