【摘要】 提出了一种新的岩质边坡动力稳定性评价方法,该方法以岩质边坡沿滑动面的地震永久位移作为失稳判据,结合动力强度折减法,给出一个物理意义明确的指标用以评价岩质边坡的动力稳定性。采用E.Hoek和J.W.Bray提供的典型算例对所提方法进行说明和验证,并对各烈度地震作用下楔形体边坡的动力稳定性规律进行研究,取得了较好的结果。将该方法应用于汶川地震区岩质边坡实例研究中,所得稳定性分析结果与实际地质调查情况相符,验证了方法的工程实用性和有效性。更多还原

【Abstract】 A new method is proposed for analyzing dynamic stability of rock slope under seismic load. In the proposed method,the permanent displacement of rock slope is taken as the failure criterion,and an index that has a clear physical meaning is provided to evaluate the dynamic stability of rock slope based on dynamic strength reduction theory. An example given by E. Hoek and J. W. Bray is presented to demonstrate and verify the proposed method,and then the dynamic stability law of the example under different seismic intensity is analyzed by the method,and the calculated result is satisfied. Finally,the method is applied to study a rock slope case in Wenchuan earthquake zone,and the results are well consistent with the actual situation,verifying its practicability and effectiveness.更多还原