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主余震序列作用下钢混框架结构损伤与抗震性能分析

DOI: 10.13197/j.eeev.2014.03.1.zhangpz.001, PP. 1-8

Keywords: 主余震序列,钢筋混凝土框架,累积损伤,抗震性能,低延性

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Abstract:

文中提出一种基于主余震序列分析结构抗震性能的方法(MASA),并讨论和给出该方法中各个参数的确定原则,接着应用该方法分别对某单自由度结构与不同延性的多层结构进行主余震序列分析,研究其累积损伤及抗震性能。分析结果表明本文提出的MASA方法简单实用,参数意义明确,为分析和评价结构在主余震序列或其他序列作用下的累积损伤及抗震性能提供了一种新的思路;应用该方法分析得知余震对钢筋混凝土框架结构的抗震性能影响显著,尤其是延性较低的结构,且其影响程度与主震震级直接相关。

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