摘要
在总结前人关于结构面屈服加速度的累积位移和速率效应的成果基础上,结合动力强度折减法,提出了一种考虑结构面退化的岩质边坡动力稳定性系数计算方法,并提供了该方法实施的具体步骤。针对一概化岩质边坡模型,应用所提方法计算了其动力稳定系数。结果表明,当计算岩质边坡的动力稳定性时,采用考虑结构面退化效应的动态摩擦系数是非常有必要的,相较于结构面静态摩擦系数,选用前者所获得的计算结果更加符合实际情况。
Based on the previous study on cumulative displacement and velocity effect of the yield acceleration of structural plane, and combining with the dynamic strength reduction analysis, we propose a new approach for calculating the dynamic stability factor for rock slope, in which strength deterioration of the sliding surface is considered. The application procedure of the new methodology is presented aiming at a rocky slope. The results show that using dynamic friction coefficient that considers sliding surface deterioration is necessary in calculating the dynamic stability factor for a rock slope, the calculated results are more reasonable comparing with the calculation that adopts static dynamic frictional coefficient.
出处
《人民长江》
北大核心
2013年第22期90-94,共5页
Yangtze River
基金
国家自然科学基金青年科学基金项目(41102195)
中国博士后科学基金面上资助项目(2012M521500)
中央高校基本科研业务费专项资金资助项目(CUGL100234)
关键词
动力稳定性
结构面退化
动态摩擦系数
3DEC
岩质边坡
dynamic stability
deterioration of sliding surface
dynamic friction coefficient
3DEC
rock slope
