From the performance based standards and the theory of seismic, the destruction of one critical performance may affect the normal operation of the dam,and a single evaluation criterion can not meet the requirement in the assessment of the ultimate aseismic capacity of dam. Based on concrete smeared crack model adopting overloaded time domain analysis method of Ground motionand considering the structural characteristics,the ultimate aseismic capacity of one domestic concrete gravity arch dam was discussed and studied from the convergence, seismic displacement response mutant,interpenetrate of the plastic zone and failure modes of cracks.The result showed that the ultimate aseismic capacity of gravity arch dam is 0.51g,and high seismic response zone locates in the central section.
