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	单自由度结构体系抗地震倒塌能力研究
	施炜 ; 叶列平 ; 陆新征 ; SHI Wei ; YE Lieping ; LU Xinzheng
	2016-03-30 ; 2016-03-30
关键词	单自由度体系 抗地震倒塌能力谱 增量动力分析 参数分析 地震动 concrete filled steel plate composite coupling beam concrete filled steel tube nonlinear finite element analysis diagonal compression strut flexural deformation shear deformation TU352.11
其他题名	Study on seismic collapse capacity of single-degree-of-freedom structural system
中文摘要	首先介绍了结构倒塌分析的单自由度模型。然后,基于结构抗倒塌能力谱,研究了结构周期、结构延性、屈服后刚度和软化段刚度、滞回捏拢、承载力和刚度退化以及P-Δ效应对单自由度结构体系抗地震倒塌能力的影响。最后通过远场、近场有速度脉冲和近场无速度脉冲3组地震动输入下抗地震倒塌能力谱的比较,研究了地震动特性对结构抗倒塌能力的影响。结果表明:结构的自振周期、延性和P-Δ效应是抗地震倒塌能力的主要影响因素;自振周期为0.4~1.8 s的单自由度结构在近场有速度脉冲的地震动作用下更易发生倒塌破坏,而自振周期为2.6~5.0 s的单自由度结构在远场地震动作用下更易发生倒塌破坏。; Summary: This paper first introduces a SDOF model capable of representing the key properties associated with earthquake-induced collapse. Then,based on the collapse capacity spectrum,the influence of various structural properties on the collapse resistance of SDOF systems is discussed,which include fundamental period,ductility ratio,post-yielding stiffness,post-capping stiffness,hysteretic pinching,cyclic deterioration and P-Δ effect. Furthermore,the influence of ground motion features on the collapse resistance of SDOF structures was also discussed,by comparing the collapse capacity spectra calculated based on far-field ground motion set,near-field no-pulse-like ground motion set and near-field pulse-like ground motion set. The result shows that: the fundamental periods,ductility and P-Δ effect are dominant factors in collapse evaluation; structures with fundamental periods ranging from 0. 4 s to 1. 8 s are more vulnerable to the near-field pulse-like ground motions and structures with fundamental periods ranging from 2. 6 s to 5 s are more vulnerable to the far-field ones.
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=123456789/149058]
专题	清华大学
推荐引用方式 GB/T 7714	施炜,叶列平,陆新征,等. 单自由度结构体系抗地震倒塌能力研究[J],2016, 2016.
APA	施炜,叶列平,陆新征,SHI Wei,YE Lieping,&LU Xinzheng.(2016).单自由度结构体系抗地震倒塌能力研究..
MLA	施炜,et al."单自由度结构体系抗地震倒塌能力研究".(2016).

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