高墩桥梁抗震时程分析输入地震波选择
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摘要
提出考虑高阶振型影响的输入真实地震波选择方法以满足高墩桥梁抗震时程分析需求。首先在PEER强震记录数据库中选择满足震级、距离、加速度峰值及长周期特性的不同场地条件的备选地震波。其次根据场地条件以备选地震波反应谱与设计反应谱,在平台段与高墩桥梁前几阶周期点附近(平均)谱值的相对误差最小为双控指标(小于15%),确定具体的输入地震波以实现时程分析结果与(设计)反应谱分析统计一致性要求。以某百米高墩桥梁抗震时程分析为例验证建议选波方法的有效性。
The method for selection of real records as input for time history analysis of bridges with high columns is presented. The earthquake records in PEER ground motion database are initially selected considering the earthquake magnitude,distance,PGA and long period characteristic. Then the average relative errors between each record spectrum and the design response spectrum at two period portions,which include the flat part and some lower-order mode periods of the bridge structures,are considered according to the site classification. If the errors are both less than 15% then the record is determined as the input for the dynamic analysis in order to meet the requirement of statistical consensus theory.The seismic analysis of a bridge with columns about 100m is illustrated as an example.
The method for selection of real records as input for time history analysis of bridges with high columns is presented. The earthquake records in PEER ground motion database are initially selected considering the earthquake magnitude,distance,PGA and long period characteristic. Then the average relative errors between each record spectrum and the design response spectrum at two period portions,which include the flat part and some lower-order mode periods of the bridge structures,are considered according to the site classification. If the errors are both less than 15% then the record is determined as the input for the dynamic analysis in order to meet the requirement of statistical consensus theory.The seismic analysis of a bridge with columns about 100m is illustrated as an example.
引文
[1]JTJ 004—89公路工程抗震设计规范[S].北京:人民交通出版社,1990(JTJ 004—89 Specifications of earthquake resistan design for highway engineering[S].Beijing:China Communications Press,1990(in Chinese))
[2]JTG/T B02-01—2008公路桥梁抗震设计细则[S].北京:人民交通出版社,2008(JTG/T B02-01—2008Guidelines for seismic design of highway bridges[S].Beijing:China Communications Press,2008(in Chinese))
[3]Moehle J P.Performance-based seismic design of tall buildings in the U.S.[C].The 14thWorld Conference on Earthquake Engineering,Beijing,2008
[4]GB 50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010(GB 50011—2010 Code for seismic design of buildings[S].Beijing:China Architecture and Building Press,2010(in Chinese))
[5]Bommer J J,Acevedo A B.The use of real earthquake accelerograms as input to dynamic analysis[J].Journal of Earthquake Engineering,2004,8(S1):43-91
[6]王亚勇.关于设计反应谱、时程法和能量方法的探讨[J].建筑结构学报,2000,21(1):21-28(Wang Yayong.A review of seismic response spectra,time history analysis and energy method[J].Journal of Building Structures,2000,21(1):21-28(in Chinese))
[7]Iervolino I,Cornell C A.Record selection for nonlinear seismic analysis of structures[J].Earthquake Spectra,2005,21(3):685–713
[8]曲哲,叶列平,潘鹏.建筑结构弹塑性时程分析中地震动记录选取方法的比较研究[J].土木工程学报,2011,44(7):10-21(Qu Zhe,Ye Lieping,Pan Peng.Comparative study on methods of selecting earthquake ground motions for nonlinear time history analyses of building structures[J].China Civil Engineering Journal,2011,44(7):10-21(in Chinese))
[9]杨溥,李英民,赖明.结构时程分析法输入地震波的选择控制指标[J].土木工程学报,2000,33(6):33-37(Yang Pu,Li Yingmin,Lai Ming.A new method for selecting inputting waves for time-history analysis[J].China Civil Engineering Journal,2000,33(6):33-37(in Chinese))
[10]王东升,李宏男,王国新,等.弹塑性地震反应谱的长周期特性研究[J].地震工程与工程振动,2006,26(2):49-55(Wang Dongsheng,Li Hongnan,Wang Guoxin,et al.Study on characters of long period portion of inelastic spectra[J].Earthquake Engineering and Engineering Vibration,2006,26(2):49-55(in Chinese))
[11]胡聿贤.地震工程学[M].北京:地震出版社,1988:227-228
[12]朱东生,刘世忠,虞庐松.曲线桥地震反应研究[J].中国公路学报,2002,15(3):42-48(Zhu Dongsheng,Liu Shizhong,Yu Lusong.Research on seismic response of curved girder bridges[J].China Journal of Highway and Transport,2002,15(3):42-48(in Chinese))
[2]JTG/T B02-01—2008公路桥梁抗震设计细则[S].北京:人民交通出版社,2008(JTG/T B02-01—2008Guidelines for seismic design of highway bridges[S].Beijing:China Communications Press,2008(in Chinese))
[3]Moehle J P.Performance-based seismic design of tall buildings in the U.S.[C].The 14thWorld Conference on Earthquake Engineering,Beijing,2008
[4]GB 50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010(GB 50011—2010 Code for seismic design of buildings[S].Beijing:China Architecture and Building Press,2010(in Chinese))
[5]Bommer J J,Acevedo A B.The use of real earthquake accelerograms as input to dynamic analysis[J].Journal of Earthquake Engineering,2004,8(S1):43-91
[6]王亚勇.关于设计反应谱、时程法和能量方法的探讨[J].建筑结构学报,2000,21(1):21-28(Wang Yayong.A review of seismic response spectra,time history analysis and energy method[J].Journal of Building Structures,2000,21(1):21-28(in Chinese))
[7]Iervolino I,Cornell C A.Record selection for nonlinear seismic analysis of structures[J].Earthquake Spectra,2005,21(3):685–713
[8]曲哲,叶列平,潘鹏.建筑结构弹塑性时程分析中地震动记录选取方法的比较研究[J].土木工程学报,2011,44(7):10-21(Qu Zhe,Ye Lieping,Pan Peng.Comparative study on methods of selecting earthquake ground motions for nonlinear time history analyses of building structures[J].China Civil Engineering Journal,2011,44(7):10-21(in Chinese))
[9]杨溥,李英民,赖明.结构时程分析法输入地震波的选择控制指标[J].土木工程学报,2000,33(6):33-37(Yang Pu,Li Yingmin,Lai Ming.A new method for selecting inputting waves for time-history analysis[J].China Civil Engineering Journal,2000,33(6):33-37(in Chinese))
[10]王东升,李宏男,王国新,等.弹塑性地震反应谱的长周期特性研究[J].地震工程与工程振动,2006,26(2):49-55(Wang Dongsheng,Li Hongnan,Wang Guoxin,et al.Study on characters of long period portion of inelastic spectra[J].Earthquake Engineering and Engineering Vibration,2006,26(2):49-55(in Chinese))
[11]胡聿贤.地震工程学[M].北京:地震出版社,1988:227-228
[12]朱东生,刘世忠,虞庐松.曲线桥地震反应研究[J].中国公路学报,2002,15(3):42-48(Zhu Dongsheng,Liu Shizhong,Yu Lusong.Research on seismic response of curved girder bridges[J].China Journal of Highway and Transport,2002,15(3):42-48(in Chinese))
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