商用大飞机撞击对核岛厂房隔震结构的影响研究

Study on the impact of commercial large aircraft on the isolated structure of nuclear island building

基于有限元分析软件ANSYS/DYNA建立采用隔震方案和非隔震方案的“华龙一号”核岛厂房模型,并分别进行商用大飞机撞击模拟。系统分析了核岛厂房变形情况、隔震支座最大位移、厂房结构的振动反应谱。分析结果表明,隔震方案有利于提高大飞机撞击下核岛厂房的结构完整性;隔震层在飞机撞击下不会损坏;隔震方案对飞机撞击振动响应的影响较小,且影响是有利的。

Based on the finite element analysis software ANSYS/DYNA,the model of HPR1000 nuclear island building with isolation scheme and non isolation scheme is established,and the simulation of the impact of commercial large aircraft is carried out respectively.The deformation of the nuclear island plant,the maximum displacement of the isolation bearings,the shock response spectrum of the structure of building are systematically analyzed.The results show that the isolation scheme is beneficial to improve the structural integrity of the nuclear island building under the impact of large aircraft;the isolation layer is not damaged under the impact of aircraft;the isolation scheme has little influence on the vibration response under the impact of aircraft,and the influence is favorable.