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工程力学  2015 

基于性能的钢框架结构失效模式识别及优化

DOI: 10.6052/j.issn.1000-4750.2014.04.0291, PP. 44-51

Keywords: 钢框架结构,失效模式识别,增量动力分析,性能指标,多目标优化

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Abstract:

该文定义了损伤和滞回耗能两个性能指标,以增量动力分析(IDA)方法为基础,提出基于性能的钢框架结构失效模式识别方法,并以性能指标为目标函数,以构件截面尺寸作为变量,建立钢框架结构失效模式多目标优化方法。在多条地震波作用下,对一个20层benchmark钢框架结构进行了失效模式识别与优化分析,结果表明,以损伤和滞回耗能作为评价指标的基于性能的钢框架结构失效模式识别方法,能有效识别最不利地震作用下的结构失效模式,基于性能的失效模式多目标优化方法能够显著提高结构整体的抗震性能。

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