HFTD Analysis of an Arched Dam at Seismic Loading

Hybrid Frequency-Time Domain (HFTD) method is applied to analyze the response of a dam-foundation-reservoir system. With this method the effect of frequency dependent properties such as compressibility of fluid, reservoir-bottom absorption and far-field reflection can be considered. HFTD results are compared with transient Newmark-type results and effect of frequency dependent properties is found to reduce amplitudes and stresses in the dam for the chosen bottom absorption in the reservoir.