有速度脉冲的近场地震下中心支撑钢框架抗震性能评估
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摘要
近场地震具有的长周期速度脉冲会显著改变结构的响应,使结构在瞬间产生较大的侧移。用屈服点谱(YPS)法对两个中心支撑钢框架算例进行了抗震性态评估,并将得出的结构峰值位移和层间位移角与非线性时程分析的结果进行了比较,评价了YPS法结构抗震评估的精度。
A long period velocity pulse in the near-fault earthquake can dramatically change the structure's response,leading to the momentary lateral movement of the structure.YPS is used to estimate the peak displacement and interstory drift indices(IDI) of the two inverted-V concentrically braced steel frames,and a contrast is made between the peak displacement of the structure and IDI estimated by YPS method with the results estimated by time-history analysis.Finally,the paper evaluates the credibility of YPS method applied to seismic evaluation.
A long period velocity pulse in the near-fault earthquake can dramatically change the structure's response,leading to the momentary lateral movement of the structure.YPS is used to estimate the peak displacement and interstory drift indices(IDI) of the two inverted-V concentrically braced steel frames,and a contrast is made between the peak displacement of the structure and IDI estimated by YPS method with the results estimated by time-history analysis.Finally,the paper evaluates the credibility of YPS method applied to seismic evaluation.
引文
[1]Mark Aschheim.Seismic design based on the yield displacement[J].Earthquake Spectra,2002,18(4):581-600.
[2]Mark Aschheim.Yield Point Spectra:A simple alternative to the capacity spectrum method[C].Seaoc Convention,1999:373-380.
[3]王京哲.近场地震速度脉冲下的反应谱加速度敏感区[J].中国铁道科学,2003,24(6):27-30.
[4]Liao W I,Loh C H,Lee B H.Comparison of dynamic response of isolated and non-isolated continuous girder bridges subjected to near-faultground motions[J].Engineering Structures,2004(26):2173-2183.
[5]孙国华,顾强,何若全,等.基于滞回耗能谱的钢板剪力墙结构性态设计方法[J].建筑结构学报,2011,32(11):126-133.
[6]中国建筑科学研究院.GB50011-2001.建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.
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[8]李应斌.钢筋混凝土结构基于性能的抗震设计理论与应用研究[D].西安:西安建筑科技大学.
[9]侯爽,欧进萍.结构Pushover分析的侧向力分布及高阶振型影响[J].地震工程与工程振动,2004,24(3):89-97.
[10]Edgar Black.Seismic Design and Evaluation of Multistory Using Yield Point Spectra[D].USA:University of Illinois,2000.
[11]沈健超.屈服点谱在中心支撑钢框架结构抗震性能评价中的应用[D].苏州:苏州科技学院,2011.
[2]Mark Aschheim.Yield Point Spectra:A simple alternative to the capacity spectrum method[C].Seaoc Convention,1999:373-380.
[3]王京哲.近场地震速度脉冲下的反应谱加速度敏感区[J].中国铁道科学,2003,24(6):27-30.
[4]Liao W I,Loh C H,Lee B H.Comparison of dynamic response of isolated and non-isolated continuous girder bridges subjected to near-faultground motions[J].Engineering Structures,2004(26):2173-2183.
[5]孙国华,顾强,何若全,等.基于滞回耗能谱的钢板剪力墙结构性态设计方法[J].建筑结构学报,2011,32(11):126-133.
[6]中国建筑科学研究院.GB50011-2001.建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.
[7]Chopra A K,Goel K.A model pushover analysis procedure for estimating seismic demands for buildings[J].Earthquake Engineering and StructuralDynamics,2002,31:561-582.
[8]李应斌.钢筋混凝土结构基于性能的抗震设计理论与应用研究[D].西安:西安建筑科技大学.
[9]侯爽,欧进萍.结构Pushover分析的侧向力分布及高阶振型影响[J].地震工程与工程振动,2004,24(3):89-97.
[10]Edgar Black.Seismic Design and Evaluation of Multistory Using Yield Point Spectra[D].USA:University of Illinois,2000.
[11]沈健超.屈服点谱在中心支撑钢框架结构抗震性能评价中的应用[D].苏州:苏州科技学院,2011.
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