The results show that the V/H peak acceleration ratios are reduced as the distance of site to the fault is increased, and the vertical response spectra and …

竖向反应谱及竖向与水平向加速度反应谱比是周期的函数、并与场地条件及震源距相关。

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Then some rules are presented: the frequency characteristics, acceleration peak value of the input ground motion have great influence on the seismic response of composite foundation.

结果表明：输入地震动的强度和频谱特性对复合地基地震效应影响较大；

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