核电厂电气厂房地震响应敏感性分析

利用人工地震波生成算法,探讨考虑土壤-结构相互作用的核电厂电气厂房地震响应动力分析模型和计算方法。通过比较楼层反应谱,研究岩土材料参数和载荷的不确定性对结构响应的影响。结果表明:岩土材料参数对核电厂电气厂房地震响应的影响更大,单一岩土材料参数下计算得到的拓宽后的楼层反应谱不能完全包络参数变化带来的地震响应差别。即使最终的反应谱大于或等于各种不同岩土参数下的楼层反应谱,仍有必要对不同岩土参数下的楼层反应谱做包络。

Sensitivity Analysis of Seismic Behavior of Nuclear Power Plant Electrical Building

The generation algorithm of the artificial ground motion is analyzed,the dynamic analysis model and method for the nuclear power plant seismic behavior under soil-structure interaction are explored,and the effect of variations of both the soil property and the load on the building responses is studied via comparison of the floor response spectra.The results show that compared with the load,the soil property con-tributes more to the seismic behavior of nuclear power plants,and that the difference of seismic behavior arising from the parameter variations can not be fully enveloped by the broadened floor response spectra cal-culated with one specific soil property.Therefore,it is necessary to envelop the floor response spectra with various soil properties.