大悬挑对核电厂转运-清洗间结构的地震反应影响

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振动与冲击 ›› 2023, Vol. 42 ›› Issue (13) : 147-154.

论文

李小军1，刘旭晨1,2，王晓辉3，王玉石1，贺秋梅3，王宁3

作者信息 +

Effects of large cantilever on seismic response of transfer-cleaning room structure in nuclear power plant

LI Xiaojun1， LIU Xuchen1,2， WANG Xiaohui3， WANG Yushi1， HE Qiumei3， WANG Ning3

Author information +

文章历史 +

摘要

以核电厂转运-清洗间结构为原型，建立了无悬挑的转运-清洗间结构和带悬挑的转运-清洗间结构有限元模型，通过对两个模型展开模态分析和动力时程分析，分析了大悬挑对转运-清洗间结构抗震性能的影响，探讨了转运-清洗间结构的动力特征和抗震性能。结果表明，转运-清洗间的结构刚度大、自振周期短，在超设计基准地震动作用下的地震反应较小，结构整体仍处于弹性工作状态；大悬挑显著降低了转运-清洗间结构的刚度，延长了结构的自振周期，同时也增大了结构的整体地震反应，但这种增幅并不大，带悬挑的转运-清洗间完全满足抗震性能要求。

Abstract

Based on the prototype of transfer and purging rooms in nuclear power plants, the finite element models of transfer and purging rooms without a cantilever and with a cantilever were established. Based on the modal analysis and dynamic time history analysis of the two models, the influence of the cantilever on the seismic performance of the transfer and purging rooms was analyzed, and the dynamic characteristics and seismic performance of the transfer and purging rooms were discussed. The results show that the structural stiffness of the transfer and purging rooms is great, the natural vibration period is short, the seismic response is small under the excitation of ground motions beyond the design standard, and the whole structure is still in an elastic state. The large cantilever in the structure obviously reduces the stiffness of the transfer and purging rooms, prolongs the natural vibration period of the structure, and increases the overall seismic response of the structure, but the amplification is not significant. And the transfer and purging rooms with a cantilever fully meet the requirements of seismic performance.

导出引用

李小军1，刘旭晨1,2，王晓辉3，王玉石1，贺秋梅3，王宁3. 大悬挑对核电厂转运-清洗间结构的地震反应影响[J]. 振动与冲击, 2023, 42(13): 147-154

LI Xiaojun1， LIU Xuchen1,2， WANG Xiaohui3， WANG Yushi1， HE Qiumei3， WANG Ning3. Effects of large cantilever on seismic response of transfer-cleaning room structure in nuclear power plant[J]. Journal of Vibration and Shock, 2023, 42(13): 147-154

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