Abstract：It is a primary issue for the design of concrete gravity dam to analyze dam foundation instability. Always the performance function of reliability analysis is nonlinear and implicit on the case of multiple sliding planes in the dam rock base. it is so complicated that there are little literatures on extensively researching about this case. According to the geometric interpretation of the realiability index，the reliability calculation can be treated as mathematical optimization. So a reliability calculating method on the basis of genetic algorithm(GA) is suggested to evaluate the stabiliy reliability index of concrete gravity dam foundation over multiple sliding planes. The method can avoid many restrictions of the first order second moment(FOSM) method associated with the explicit performance function. By camparison with the calculated results by different methods for two testing examples and an actural gravity dam，the method is verified to be accurate，efficient and rational. It has much merit and can be utilized to the practical complex engineering，for which the performance function for reliablity analysis is nonlinear and explicit or implicit. The method will benefit the further research and provide good technical support on the stabiliy safety assessment and structrual design of gravity dam.
王 刚，秦净净，管莉莉. 基于遗传算法的重力坝多滑面稳定可靠度分析[J]. 岩石力学与工程学报, 2016, 35(S1): 3153-3161.
WANG Gang，QIN Jingjing，GUAN Lili. Reliability analysis on stability of gravity dam foundation over multiple sliding planes based on GA. , 2016, 35(S1): 3153-3161.
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2016, Vol. 35 
