在CFR600堆本体抗震设计时,必须要进行抗震分析工作。堆本体抗震分析工作主要包括3部分内容:根据堆本体结构设计建立有限元抗震分析模型,堆本体整体的抗震分析,各设备和支承结构交界面处的加速度时程提取。在设计阶段,由于堆本体结构需要反复修改,上述工作要执行多次迭代循环。堆本体内部结构复杂,特别是各设备、支承结构和液钠之间繁杂的连接关系,建模工作量大,在结构设计发生更改时会产生大量重 In the CFR600 reactor body seismic design, seismic analysis must be carried out. Seismic analysis of reactor body includes three parts: building a finite element seismic analysis model based on the reactor body structure design, seismic analysis of the reactor body as a whole, and acceleration time history extraction at the interface of each equipment and support structure. In the design phase, because the stack body structure needs to be repeatedly modified, the above work needs to be performed multiple iteration loops. The internal structure of the reactor body is complex, in particular, the complicated connection between the equipment, the support structure and the liquid sodium and the large workload of modeling and the heavy weight in the structural design changes