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不同基岩输入方法对核电厂土与结构相互作用体系水平地震反应谱的影响

DOI: 10.13197/j.eeev.2015.03.28.yangxm.004, PP. 28-36

Keywords: 土-结构动力相互作用,显式有限元,反应谱

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Abstract:

本文依据SASSI用户手册提供的核岛上部结构模型及典型场地建立分析模型,分别选取如下记录作为基岩地震输入(1)汶川记录中一组有规律随震中距变化的基岩记录;(2)美国RG1.60目标谱相匹配的长滩LBNS记录调整合成的基岩地震记录;(3)我国核抗规HAD101/01目标谱相匹配的H-E08230记录调整合成的基岩地震记录。采用时域显式内域结合人工边界的算法及程序计算地震反应,主要对比我国HAD101/01及美国RG1.60标准获得的核电结构反应谱的差异,进一步与汶川记录反应结果对比,探讨其与我国基岩目标谱获得结果的差异。同时本文还讨论了震中距及土与结构相互作用(SSI)对核岛结构基础反应谱及楼层谱的影响。

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