地震动的频谱变异性对桥墩地震反应的影响研究
|
摘要
针对基于性能的桥梁抗震设计理论,地面运动的变异性,特别是反应谱的离散性对桥梁结构地震需求的影响最为显著。选择3个具有不同基本周期的钢筋混凝土单墩模型和2组实际地震波,通过IDA分析,获得反应谱离散度与桥墩结构地震需求之间的关联性,计算结果表明:地震波反应谱的离散度与桥墩结构地震需求的离散度密切相关;合理选择实际地震波,减小反应谱之间的离散性,可以显著提高桥墩结构地震反应预计的精确性和计算效率。
The variability of strong ground motions,especially the dispersion of response spectra,have significant effects on seismic demands for performance-based design of bridge.Incremental dynamic analysis is performed for three bridge columns with different fundamental periods using two bins of real earthquake ground motions.The correlation between the dispersion of response spectra and seismic demands of bridge columns can demonstrate that the probabilistic seismic demand assessment of bridge columns is closely related to the dispersion of response spectra of selected ground motions.It can significantly improve the precision and efficiency of seismic response assessments of bridge columns by means of rational selection of real earthquake ground motions which can reduces the dispersion of response spectra.
The variability of strong ground motions,especially the dispersion of response spectra,have significant effects on seismic demands for performance-based design of bridge.Incremental dynamic analysis is performed for three bridge columns with different fundamental periods using two bins of real earthquake ground motions.The correlation between the dispersion of response spectra and seismic demands of bridge columns can demonstrate that the probabilistic seismic demand assessment of bridge columns is closely related to the dispersion of response spectra of selected ground motions.It can significantly improve the precision and efficiency of seismic response assessments of bridge columns by means of rational selection of real earthquake ground motions which can reduces the dispersion of response spectra.
引文
[1]胡聿贤.地震工程学[M].第2版.北京:地震出版社,2006(Hu Yuxian.Earthquake Engineering[M].Beijing:Seismological Press,2006(in Chinese))
[2]李杰,李国强.地震工程学导论[M].北京:地震出版社,1992
[3]Lee T H,Mosalam K M.Probabilistic seismic evaluation ofreinforced concrete structural components and systems[R].Berkeley:Pacific Earthquake Engineering ResearchCenter,2006
[4]叶爱君,管仲国.桥梁抗震[M].第二版.北京:人民交通出版社,2011(Ye Aijun,Guan Zhongguo.Seismicdesign of bridges[M].2nd Edition.Beijing:ChinaCommunications Press,2002(in Chinese))
[5]Pacific Earthquake Engineering Research Center.OpenSees—The open system for earthquake engineering simulation[OL].http://peer.berkeley.edu/products/opensees.html,2012-10-01
[6]Iervolinoa I,Cornell C A.Record selection for nonlinearseismic analysis of structures[J].Earthquake Spectra,2005,21(3):685–713
[7]Pacific Earthquake Engineering Research Center.PEERground motion database[OL].http://peer.berkeley.edu/products/nga_project.html,2012-10-01
[8]Kevin,M.and Bozidar,S.Seismic demands ofperformance-based design of bridges[R].Berkeley:Pacific Earthquake Engineering Research Center,2003
[9]Shome N,Cornell C A,Bazzurro P,et al.Earthquakes,records and nonlinear responses[J].Earthquake Spectra,1998,14(3):469-500
[10]Vamvatsikosa D,Cornell C A.The incremental dynamicanalysis and its application to performance-basedearthquake engineering[C]//Proc.12thEuropeanConference on Earthquake Engineering.London,England,2002
[11]Vamvatsikosa D,Cornell C A.Applied incrementaldynamic analysis[J].Earthquake Spectra,2004,20(2):523-553
[12]Benjamin J R,Cornell C A.Probability,statistics anddecision for civil engineers[M].New York:McGraw-Hill,1963
[13]American Society of Civil Engineers.Seismic designcriteria for structures,systems,and components innuclear facilities[R].Reston:Structural EngineeringInstitute,Working Group for Seismic Design Criteria forNuclear Facilities,2005
[2]李杰,李国强.地震工程学导论[M].北京:地震出版社,1992
[3]Lee T H,Mosalam K M.Probabilistic seismic evaluation ofreinforced concrete structural components and systems[R].Berkeley:Pacific Earthquake Engineering ResearchCenter,2006
[4]叶爱君,管仲国.桥梁抗震[M].第二版.北京:人民交通出版社,2011(Ye Aijun,Guan Zhongguo.Seismicdesign of bridges[M].2nd Edition.Beijing:ChinaCommunications Press,2002(in Chinese))
[5]Pacific Earthquake Engineering Research Center.OpenSees—The open system for earthquake engineering simulation[OL].http://peer.berkeley.edu/products/opensees.html,2012-10-01
[6]Iervolinoa I,Cornell C A.Record selection for nonlinearseismic analysis of structures[J].Earthquake Spectra,2005,21(3):685–713
[7]Pacific Earthquake Engineering Research Center.PEERground motion database[OL].http://peer.berkeley.edu/products/nga_project.html,2012-10-01
[8]Kevin,M.and Bozidar,S.Seismic demands ofperformance-based design of bridges[R].Berkeley:Pacific Earthquake Engineering Research Center,2003
[9]Shome N,Cornell C A,Bazzurro P,et al.Earthquakes,records and nonlinear responses[J].Earthquake Spectra,1998,14(3):469-500
[10]Vamvatsikosa D,Cornell C A.The incremental dynamicanalysis and its application to performance-basedearthquake engineering[C]//Proc.12thEuropeanConference on Earthquake Engineering.London,England,2002
[11]Vamvatsikosa D,Cornell C A.Applied incrementaldynamic analysis[J].Earthquake Spectra,2004,20(2):523-553
[12]Benjamin J R,Cornell C A.Probability,statistics anddecision for civil engineers[M].New York:McGraw-Hill,1963
[13]American Society of Civil Engineers.Seismic designcriteria for structures,systems,and components innuclear facilities[R].Reston:Structural EngineeringInstitute,Working Group for Seismic Design Criteria forNuclear Facilities,2005
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心