Study on the integral reliability of Jinping First Stage high arch dam-foundation system

As it is not enough to assess the integral reliability of the complex 3D high arch dam-foundation system just from local damage in the deterministic analysis, the improved response surface method is firstly introduced to get the failure possibility of individual uncertain factor, and then PNET method to fix the integral reliability considering several uncertain factors. Then the main works are presented as following: (1) find out the main individual failure modes; (2) establish the limit state functions of the main individual failure modes respectively; (3) fix the relevance among the main failure mode and calculate the integral reliability. Finally the results are used to assess the failure possibility and integral reliability of Jinping high arch dam-foundation system.