对输入地震动的影响研究。
The influence of input seismic load has been studied, secondly.
隔震体系最优屈服系数与输入地震动水平相关；
The optimal yield coefficient of the system is correlative with earthquake level.
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；
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.
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