多谱分析法在核级管道抗震分析中的应用

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英文篇名：Application of Multiple Spectrum Analysis Method in Nuclear Pipe Seismic Analysis 中文刊名：核动力工程 英文刊名：Nuclear Power Engineering 作者：汤凤 ; 张周红 英文作者：TANG Feng ; ZHANG Zhou-hong China Nuclear Power Engineering Co.Ltd. ; Shenzhen ; Guangdong ; 518124 ; China 中文关键词：多谱 ; 包络谱 ; 阻尼器 ; 抗震分析 英文关键词：Multiple spectrum ; Envelope spectrum ; Damper ; Seismic analysis 出版日期：2011-12-15 机构：中广核工程有限公司; 年：2011 期：S2 出版单位：核动力工程

摘要

多谱分析法和单谱分析法是核电厂管道抗震分析常用的2种方法。多谱分析法是在管道的各个支承点施加不同的激励,单谱分析法是对管道的支承采用一致激励。多谱分析法考虑了地震激励随空间的变化。本文分别采用多谱分析法和单谱分析法对削减阻尼器后的主蒸汽系统(VVP)管线进行计算,分析2种方法对阻尼器反力的影响。结果表明,2种分析方法的保守性各不相同,带主回路的辅助管道抗震分析需使用多谱分析法,一般规模的管道抗震分析使用单谱分析法具有保守性。
Multiple spectrum analysis method and single spectrum analysis method are two stand analysis methods which are used for the pipe seismic analysis in nuclear power plants.Multi-support excitation is applied to pipe supports in multiple spectrum analysis method,and uniform excitation is applied to pipe supports in the single spectrum analysis method.Variation of seismic motion according to space position is considered in the multiple spectrum analysis method.In this paper,multiple spectrum analysis method and single spectrum analysis method are used in the seismic analysis of VVP line after damper-cutting,to compare the effect on damper under these two analysis methods.The results reveals that,the conservatism of two analysis methods is different,and for the auxiliary pipes coupling with primary pipes,multiple spectrum analysis method can be applied in the seismic analysis;On the other hand,for the small scale pipes decoupling with primary pipe,single spectrum analysis method is conservative in the seismic analysis.

引文

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