高层钢结构地震失效模式控制的失效路径修正法
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摘要
本文主要研究高层钢框架结构的地震失效模式及其控制方法。首先,给出了高层钢结构的地震失效模式的分析方法;其次,提出了根据结构的失效路径来加强构件对高层钢结构的地震失效模式进行控制的方法;然后,提出了结构整体抗震能力的分析方法以及分别相应于设计能力和屈服能力的能力储备分析方法;最后,通过对一座15层的钢框架结构进行典型地震动下的极限时程分析和极限pushover分析,得到高层钢框架结构的失效模式和整体抗震能力以及相应于最弱失效模式的能力储备,并验证了本文中地震失效模式控制方法的有效性。本文的研究表明,高层钢结构的地震失效模式控制可以采用结构失效路径修正(薄弱构件加强)来实现。
This paper mainly studies seismic failure modes and their control of tall steel buildings.Firstly,the analysis methods of seismic failure modes of steel tall buildings are given.Secondly,a method for seismic failure mode control of tall steel buildings is presented by strengthening the members according to the structural failure path.Thirdly,the analysis methods of structural integral seismic capacity and capacity storage respectively corresponding to design capacity and yielding capacity are presented.Finally,the failure modes,integral seismic capacity and capacity storage corresponding to weakest failure mode are obtained by employing a 15-story steel frame building for ultimate time-history analysis under typical earthquake ground motions and ultimate pushover analysis.And the method for seismic failure mode control of tall steel buildings in this paper is proved practicable.The research in the paper will provide an effective method for seismic failure mode control of tall steel buildings by changing the structural failure path.
This paper mainly studies seismic failure modes and their control of tall steel buildings.Firstly,the analysis methods of seismic failure modes of steel tall buildings are given.Secondly,a method for seismic failure mode control of tall steel buildings is presented by strengthening the members according to the structural failure path.Thirdly,the analysis methods of structural integral seismic capacity and capacity storage respectively corresponding to design capacity and yielding capacity are presented.Finally,the failure modes,integral seismic capacity and capacity storage corresponding to weakest failure mode are obtained by employing a 15-story steel frame building for ultimate time-history analysis under typical earthquake ground motions and ultimate pushover analysis.And the method for seismic failure mode control of tall steel buildings in this paper is proved practicable.The research in the paper will provide an effective method for seismic failure mode control of tall steel buildings by changing the structural failure path.
引文
[1]侯钢领.结构可靠指标矢量、概率Pushover分析与体系可靠度[D].哈尔滨:哈尔滨工业大学,2001.
[2]欧进萍,段宇博.高层建筑结构的抗震可靠度分析与优化设计[J].地震工程与工程振动,1995,15(1):1-13.
[3]欧进萍,段忠东,肖仪清.海洋平台结构安全评定———理论、方法与应用[M].北京:科学出版社,2003.
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[5]中华人民共和国建设部.GB 50011-2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.
[6]中华人民共和国建设部.GB 50009-2001建筑结构荷载规范[S].北京:中国建筑工业出版社,2001.
[7]中国建筑技术研究院.JG J99-98高层民用建筑钢结构技术规程[S].北京:中国建筑工业出版社,2001.
[8]孙爱伏,欧进萍.高层钢结构抗震pushover分析的侧向力分布模式及其影响[J].地震工程与工程振动,2008,28(4):88-93.
[2]欧进萍,段宇博.高层建筑结构的抗震可靠度分析与优化设计[J].地震工程与工程振动,1995,15(1):1-13.
[3]欧进萍,段忠东,肖仪清.海洋平台结构安全评定———理论、方法与应用[M].北京:科学出版社,2003.
[4]中华人民共和国建设部.GB 50017-2003钢结构设计规范[S].北京:中国建筑工业出版社,2001.
[5]中华人民共和国建设部.GB 50011-2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.
[6]中华人民共和国建设部.GB 50009-2001建筑结构荷载规范[S].北京:中国建筑工业出版社,2001.
[7]中国建筑技术研究院.JG J99-98高层民用建筑钢结构技术规程[S].北京:中国建筑工业出版社,2001.
[8]孙爱伏,欧进萍.高层钢结构抗震pushover分析的侧向力分布模式及其影响[J].地震工程与工程振动,2008,28(4):88-93.
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