摘要
地震是使边坡及其支护结构产生变形破坏的诱发因素,地震敏感性分析对于边坡工程的优化设计具有重要意义。复杂岩质边坡具有不规则的破坏滑移面,岩土体结构复杂,其稳定性受地下水、地震等地质环境的影响。本文采用改进的Sarma边坡稳定性分析模型,探讨了复杂岩质边坡进行地震敏感性分析的方法,该方法不仅考虑了不规则滑面问题、坡面加固力问题,而且考虑了地下水和地震的作用。通过选择典型岩质边坡锚固工程进行实例分析表明,地震对边坡稳态的作用是十分显著的,它是边坡变形破坏最敏感的影响因素。该方法能够很好地揭示复杂岩质边坡工程稳定性对地震作用的动态响应,是边坡地震敏感性分析的有效方法。
A method for stability of slope engineering with complicated rock-mass is proposed in the paper. It is based on the improved Sarma model of slope analysis. It is to be considered with the irregular slippage surfaces and the strengthening force on slope surface. The influences of underground water and the earthquake are also considered. Some practical examples are analyzed. It is shown that the earthquake is a remarkable effect to the stability of slope. The proposed method can be used to unfold the dynamic response for the stability of the slope due to earthquake. It is found that the proposed method can be used to analyze the sensitivity of earthquake.
出处
《土木工程学报》
EI
CSCD
北大核心
2003年第11期34-37,共4页
China Civil Engineering Journal
关键词
岩质边坡
锚固工程
地震
敏感性分析
rock-mass, slope engineering, earthquake, sensitivity
