地震动输入的选取与结构响应研究
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摘要
目的采用提取地震动反应谱特征参数建立基于地震动反应谱特性的数据库,为结构地震反应分析提供有效便捷的地震动输入选取方式.方法根据常见的4种形式反应谱,以误差最小原则搜索最佳的反应谱特征参数,并通过选取不同的结构形式,明确结构反应与地震动输入之间的关系.结果地震动输入对结构响应的影响是十分明显的,相同的结构在不同的地震动作用下或不同的结构在相同的地震作用下的响应将体现出不同的性态,结构物的反应可以相差平均约2倍左右.结论考虑0～20 km(近震)和50～130 km(远震)的影响,地震记录按照特征周期划分组别,对地震动时程进行结构抗震分析,能够体现出结构的最不利反应状态,有利于制定合理的结构抗震措施.
Selection of strong ground motion input is one of the main parts in structural aseismic analysis,which has been worried by engineers and designers for a long time.The parameter of response spectral corner frequency,which is established and included in our new strong ground motion database based on four types of response models,is taken as the main reference in selecting accelerogram for analyzing structural response by considering structural inherent frequency.The results indicate that strong ground motions,including near site events within 0~20 km and far site events with in 50~130 km,could make same structure show different response characters,the larger structural performance could be easily represented by selecting accelerograms having the same or similar frequency from our new database directly with structural inherent frequency,and then further aseismic procedures could be taken once structure is in dangerous situation.
Selection of strong ground motion input is one of the main parts in structural aseismic analysis,which has been worried by engineers and designers for a long time.The parameter of response spectral corner frequency,which is established and included in our new strong ground motion database based on four types of response models,is taken as the main reference in selecting accelerogram for analyzing structural response by considering structural inherent frequency.The results indicate that strong ground motions,including near site events within 0~20 km and far site events with in 50~130 km,could make same structure show different response characters,the larger structural performance could be easily represented by selecting accelerograms having the same or similar frequency from our new database directly with structural inherent frequency,and then further aseismic procedures could be taken once structure is in dangerous situation.
引文
[1]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 spec-tra,time history analysis and energy method[J].Journal of Building Structures,2000,21(1):21-28.)
[2]Bommer J J,Acevedo A B.The use of real earth-quake accelerograms as input to dynamic analysis[J].Journal of Earthquake Engineering,2004,8(1):43-91.
[3]李英民,赖明,白绍良.从结构抗震设计理论看地震动输入[J].工程力学,2002(S):549-554.(Li Yingmin,Lai Ming,Bai Shaoliang.Ground mo-tion input based on structural aseismic theory[J].Engineering M echanics,2001(S):549-554.)
[4]中华人民共和国建设部.GB50011-2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.(The ministry of construction of the People's Repub-lic of China.GB50012-2010Code for seismic design of buildings[S].Beijing:Press of China Building In-dustry,2001.)
[5]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 w aves for time-history analysis[J].China Civil Engineering Journal,2000,3(6):33-37.)
[6]李英民,赖明,白绍良.工程结构的地震动输入问题[J].工程力学,2003(S):76-87.(Li Yingmin,Lai Ming,Bai Shaoliang.Problems on inputting w aves for engineering structures[J].Engi-neering M echanics,2003(S):76-87.)
[7]王国新,陶夏新,姜海燕.反应谱特征参数的提取及其变化规律研究[J].世界地震工程,2001,17(2):73-78.(Wang Guoxin,Tao Xiaxin,Jiang Haiyan.Extraction and study of response spectrum parameters[J].World Earthquake Engineering,2001,17(2):73-78.)
[8]Dhakal R P,Mander B,Mashiko N.Identification of critical ground motion for seismic performance as-sessment of structures[J].Earthquake Engineering and Structural Dynamics,2006,35:989-1080.
[9]Watson J A,Abrahamson N A.Selection of ground motion time series and limits on scaling[J].Soil Dynamics and Earthquake Engineering,2006,26(5):477-482.
[10]Lueo N,Mai P M,Cornel C A,et al.Probabilistic seismic demand analysis at a near-fault site using ground motion simulations based on a stochastic-ki-netic earthquake source model[C]//Proceedings of the7th U.S.National Conference on Earthquake En-gineering.US:[s.n.],2002:l-10.
[11]Luco N,Cornell C A.Structure-specific scalar inten-sity measures for near-source and ordinary earth-quake ground motions[J].Earthquake Spectra,2007,23(2):257-392.
[12]Watson J A,Abrahamson N A.Selection of ground motion time series and limits on scaling[J].Soil Dynamics and Earthquake Engineering,2006,26(5):477-482.
[13]Zhai C H,Xie L L.A new approach of selecting real input ground motions for seismic design:the most unfavorable real seismic design ground motions[J].Earthquake Engineering and Structural Dynamics,2007,36(8):1009-1027.
[14]Luco N,Cornell A C.Structure-specific scalar inten-sity measures for near-source and ordinary earth-quake ground motions[J].Earthquake Spectra,2007,23:357-392.
[15]Mackie K,Stojadinovic B.Probabilistic seismic de-mand model for California bridges[J].Journal of Bridge Engineering,2001(6):468-480.
[16]韩建平,周伟.基于汶川地震记录的地震动强度指标与SDOF体系响应的相关性[J].土木工程学报,2000,8(6):9-12.(Han Jianping,Zhou Wei.Correlation between ground motion intensity indices and SDOF system responses based on the data of Wenchuan earthquake[J].China Civil Engineering Journal,2010,43:10-15.)
[17]郝敏,谢礼立,李伟.基于砌体结构破坏损伤的地震烈度物理标准研究[J].地震工程与工程振动,2007,27(5):27-32.(Hao Min,Xie Lili,Li Wei.Study on physical meas-ure of seismic intensity based on damage to masonry structures[J].Journal of Earthquake Engineering and Engineering Vibration,2007,27(5):27-32.)
[18]叶列平,马千里,缪志伟.结构抗震分析用地震动强度指标的研究[J].地震工程与工程振动,2009,29(4):9-22.(Ye Lieping,Ma Qianli,Miao Zhiwei.Study on earthquake intensities for seismic analysis of struc-tures[J].Journal of Earthquake Engineering and En-gineering Vibration,2009,29(4):9-22.)
[2]Bommer J J,Acevedo A B.The use of real earth-quake accelerograms as input to dynamic analysis[J].Journal of Earthquake Engineering,2004,8(1):43-91.
[3]李英民,赖明,白绍良.从结构抗震设计理论看地震动输入[J].工程力学,2002(S):549-554.(Li Yingmin,Lai Ming,Bai Shaoliang.Ground mo-tion input based on structural aseismic theory[J].Engineering M echanics,2001(S):549-554.)
[4]中华人民共和国建设部.GB50011-2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.(The ministry of construction of the People's Repub-lic of China.GB50012-2010Code for seismic design of buildings[S].Beijing:Press of China Building In-dustry,2001.)
[5]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 w aves for time-history analysis[J].China Civil Engineering Journal,2000,3(6):33-37.)
[6]李英民,赖明,白绍良.工程结构的地震动输入问题[J].工程力学,2003(S):76-87.(Li Yingmin,Lai Ming,Bai Shaoliang.Problems on inputting w aves for engineering structures[J].Engi-neering M echanics,2003(S):76-87.)
[7]王国新,陶夏新,姜海燕.反应谱特征参数的提取及其变化规律研究[J].世界地震工程,2001,17(2):73-78.(Wang Guoxin,Tao Xiaxin,Jiang Haiyan.Extraction and study of response spectrum parameters[J].World Earthquake Engineering,2001,17(2):73-78.)
[8]Dhakal R P,Mander B,Mashiko N.Identification of critical ground motion for seismic performance as-sessment of structures[J].Earthquake Engineering and Structural Dynamics,2006,35:989-1080.
[9]Watson J A,Abrahamson N A.Selection of ground motion time series and limits on scaling[J].Soil Dynamics and Earthquake Engineering,2006,26(5):477-482.
[10]Lueo N,Mai P M,Cornel C A,et al.Probabilistic seismic demand analysis at a near-fault site using ground motion simulations based on a stochastic-ki-netic earthquake source model[C]//Proceedings of the7th U.S.National Conference on Earthquake En-gineering.US:[s.n.],2002:l-10.
[11]Luco N,Cornell C A.Structure-specific scalar inten-sity measures for near-source and ordinary earth-quake ground motions[J].Earthquake Spectra,2007,23(2):257-392.
[12]Watson J A,Abrahamson N A.Selection of ground motion time series and limits on scaling[J].Soil Dynamics and Earthquake Engineering,2006,26(5):477-482.
[13]Zhai C H,Xie L L.A new approach of selecting real input ground motions for seismic design:the most unfavorable real seismic design ground motions[J].Earthquake Engineering and Structural Dynamics,2007,36(8):1009-1027.
[14]Luco N,Cornell A C.Structure-specific scalar inten-sity measures for near-source and ordinary earth-quake ground motions[J].Earthquake Spectra,2007,23:357-392.
[15]Mackie K,Stojadinovic B.Probabilistic seismic de-mand model for California bridges[J].Journal of Bridge Engineering,2001(6):468-480.
[16]韩建平,周伟.基于汶川地震记录的地震动强度指标与SDOF体系响应的相关性[J].土木工程学报,2000,8(6):9-12.(Han Jianping,Zhou Wei.Correlation between ground motion intensity indices and SDOF system responses based on the data of Wenchuan earthquake[J].China Civil Engineering Journal,2010,43:10-15.)
[17]郝敏,谢礼立,李伟.基于砌体结构破坏损伤的地震烈度物理标准研究[J].地震工程与工程振动,2007,27(5):27-32.(Hao Min,Xie Lili,Li Wei.Study on physical meas-ure of seismic intensity based on damage to masonry structures[J].Journal of Earthquake Engineering and Engineering Vibration,2007,27(5):27-32.)
[18]叶列平,马千里,缪志伟.结构抗震分析用地震动强度指标的研究[J].地震工程与工程振动,2009,29(4):9-22.(Ye Lieping,Ma Qianli,Miao Zhiwei.Study on earthquake intensities for seismic analysis of struc-tures[J].Journal of Earthquake Engineering and En-gineering Vibration,2009,29(4):9-22.)
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