核电厂安全壳在三向六自由度地震激励下的动力响应

Dynamic Analysis for a Nuclear Power Plant Containment under 3 Direction 6 DOF Excitations

以１４组三向六自由度的地震加速度时程作为核电厂安全壳结构的输入，这些时程符合美国ＮＲＣＧＲ１．６０的ＳＳＥ水平设计规范谱，并考虑了核电厂所在地局部场地的影响以及基岩和结构的共同作用．计算时组合了地震和事故应力．分析的结果和振动台试验较为吻合．分析结果表明，该核电厂安全壳在事故和地震同时发生时是安全的．

In this paper, 14 groups of earthquake excitations with 3 direction, 6 DOF are used in dynamic analysis for a nuclear power plant containment. The excitations and their response spectra follow SSE level in USNRC RG 1.60. The local silo effects and interactions between the containment and the rock are also included in these excitations. The computing frequency is compared with the shaking table test. The result shows the containment is safe even if earthquake and accident occur simultaneously.