核电站辅助厂房结构体系的随机临界地震响应

Random Critical Seismic Response Analysis of the Soil-SDOF Nonlinear Interaction System Using the Equivalent Linearization Method

运用等效线性化方法分析了地基土－非线性单自由度结构相互作用体系的随机临界地震激励和随机临界地震响应，并针对一个单自由度水塔结构进行了具体的数值计算，选择方差相同的过滤白噪声随机地震动作为输入，计算了该体系的随机地震响应，并验证了随机临界地震响应分析法的实用性．

In this paper, the authers formulate the motion equation of the soil-auxiliary factory building of the nuclear power plant interaction system, and then the frequency response functions of the system are conducted. By using themethod of random critical seismic response analysis, the authors analyze therandom critical seismic response of the interaction system subjected to a singleseismic input along x direction. By comparing the response of the system under theseismic input along x direction with the same variance, the method of randomcritical seismic response analysis is evaluated.