Abstract
Abstract The main purpose of this study is to investigate the influences of the duration and frequency content of ground motions on the seismic performance of high-rise intake tower considering structures-reservoir-foundation interactions. Thirty earthquake records matched with the standard design response spectrum according to Chinses code for seismic design of hydraulic structures of hydropower project were selected as ground motion input. The nonlinear seismic responses were classified according to the duration to investigate the effects of ground motion duration; while the nonlinear dynamic response under other fourteen earthquake records matched with previous standard design response spectrum with different response spectrum curves and characteristic periods were compared to study the effects of frequency content. The results show that the duration and frequency content in the seismic input can have significant effects on the seismic performance of high-rise intake towers.
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