【摘要】 基于首次超越破坏机制的理论,在三维重力坝的地震动力可靠性分析方面作了有益的探索.结合验算点法和反应谱法,建立了三维重力坝的地震动力可靠性分析方法,并将其应用到向家坝泄水坝段的地震动力可靠性分析中.该方法既能计算坝体的点可靠度,也能用来分析建基面抗滑稳定可靠度,方法简捷实用.更多还原

【Abstract】 A method for analyzing 3D seismic dynamic reliability of gravity dam is presented based on First -Passage theory, design point method and response spectrum method. Such method is used to discuss seismic dynamic reliability of Xiang-Jia-Ba dam including its elements and whole slide-resistant stability. Comparison with other methods shows that the method established by the authors is more simple and practical for dealing with reliability problem of both points’ safety and whole slide-resistant stability.更多还原