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	适用于超高层建筑的改进地震动强度指标
	卢啸 ; 陆新征 ; 叶列平 ; 李梦珂 ; LU Xiao ; LU Xinzheng ; YE Lieping ; LI Mengke
	2016-03-30 ; 2016-03-30
关键词	超高层建筑 地震动强度指标 弹塑性时程分析 倒塌分析 high-rise building ground motion intensity measure nonlinear time-history analysis collapse analysis TU973.31
其他题名	Development of an improved ground motion intensity measure for super high-rise buildings
中文摘要	地震动强度指标选取是基于性能抗震设计的重要组成部分,地震动强度指标是联系结构地震响应和地震动记录的关键参数。合理的地震动强度指标可以使结构地震响应预测结果更加准确。为此,以超高层建筑结构为基本研究对象,考虑超高层建筑结构地震响应中高阶振型参与显著的特点,并考虑地震动强度指标表达形式的简便性,提出了适合于超高层建筑结构抗震分析用的地震动强度指标,利用大量的时程分析给出了振型参与数量的取值方法;基于2个超高层建筑结构的倒塌分析实例,比较了建议的地震动强度指标和部分现有地震动强度指标对超高层建筑结构的适用性。分析表明:与已有的地震动强度指标相比,采用建议的地震动强度指标表征结构临界倒塌的地震动强度时,其变异系数最小,能较好地反映超高层建筑结构中高阶振型的影响,对超高层建筑结构的抗震设计具有较好的适用性。; Ground motion intensity measure( IM),which is the bridge to connect the structural seismic responses and ground motion records,is an important part in performance-based earthquake design. Reasonable and efficient IM could make the prediction of the structural seismic response more accurate. Taking the super high-rise building as the research object,a more reasonable IM for super high-rise building was proposed. This IM takes into account the significant characteristic that higher-order vibration modes play important part in the seismic response of super high-rise building,as well as the simple form of the IM. And then,the key parameter of the proposed IM was calibrated by a series of time-history analysis and reasonable values were suggested. Finally,the collapse simulations of two super high-rise buildings were used to discuss the rationality of the proposed IM and some other existing IMs for super highrise building. The results indicate that the proposed IM has the minimum coefficient of variation comparing to the other existing IMs at the critical collapse status and performances well in reflecting the contribution of higher-order vibration modes to the structural response; and it's more applicable to seismic design for super high-rise building.
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/148844]
专题	清华大学
推荐引用方式 GB/T 7714	卢啸,陆新征,叶列平,等. 适用于超高层建筑的改进地震动强度指标[J],2016, 2016.
APA	卢啸.,陆新征.,叶列平.,李梦珂.,LU Xiao.,...&LI Mengke.(2016).适用于超高层建筑的改进地震动强度指标..
MLA	卢啸,et al."适用于超高层建筑的改进地震动强度指标".(2016).

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