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中文摘要：
三门核电站主厂房为大跨度钢框架结构，采用有限元分析程序ANSYS对主厂房整体结构进行模态分析和弹塑性时程分析。通过其固有振动周期和振型，对结构的振动特性有简单的认识。根据分析结果对三门核电站主厂房的抗震性能进行评估，认为结构在相同场地条件下具有良好的抗震性能。
英文摘要：
SAN Men nuclear power station is a long-span steel frame structure. Modal analysis and elastoplastic time-history analysis for the integral structure are carded out with finite element analysis program ANSYS. Through its natural vibration periods and mode shapes,a simple understanding of the vibration characteristics is fond. Based on the results of the elastoplastic time-history analysis, the sesmic of the integral structure of the SAN Men nuclear power station is evaluated, and it is showen that the sesmic performance of the structure in the same site condition is well.
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