关键词: 体育馆看台；动力阻抗；子结构方法；桩土相互作用；地震响应

Abstract: Based on the solution to the dynamic impedance functions of pile-soil foundations under the conditions of layered soil, it studies the earthquake response of stadium stands with pile-soil structure interaction by combining the constant impedance method with the substructure method via finite element timehistory analysis. The finite element calculation results show that the maximum displacement and maximum acceleration response of the stadium stands under the action of different seismic waves are different due to the differences in the frequency spectrum characteristics of the seismic waves. The maximum displacement and maximum acceleration response of the stadium stands under the action of EL-Centro wave and artificial wave are close; the response under the action of TAR_TARZANA wave is slightly smaller, compared with the results of EL-Centro wave and artificial wave. Moreover, under the action of the three seismic waves mentioned above, the seismic response of the upper stand is obviously larger than that of the lower stand.

Key words: stadium stands; dynamic impedance; substructure method; pilesoil interaction; seismic response