【Author】ZHAO Jianming; LIU Xiaosheng; CHEN Ning; CHANG Yaping; LIU Qiwang; WANG Hong

【Abstract】 An analysis method is proposed to evaluate the maximum anti-seismic capability of high earth core rock-fill dam. The method is based on the 3D authentic nonlinear effective stress dynamic analysis, and the conditions of strong earthquake are considered. The focus is on the decisive factors of the seismic safety, stability, deformation and safety of the impervious core. The method was successfully applied to the Lianghekou dam. A comprehensive analysis on the calculations of the dam slope dynamic stability, the earthquake-induced permanent deformation, the liquefaction potential, the element anti-seismic safety as well as the sand seismic safety of impervious core, indicates the maximum anti-seismic capability of this dam is 0.45g～0.50g.

【Key words】 hydro-structure; maximum anti-seismic capability; 3-D authentic nonlinear dynamic FEM; core rock-fill dam; dynamic stability of dam slope; earthquake-induced permanent deformation