大跨越输电塔-线体系的近场脉冲型地震反应分析
|
摘要
分析了大跨越输电塔-线体系的动力特性,对比了大跨越输电塔-线体系的近-远场地震反应,研究了大跨越塔-线体系的近场脉冲地震反应规律。结果表明在同幅值的近场脉冲型地震动作用下,大跨越输电塔-线体系的动力反应远大于其在一般地震动下的反应,大跨越输电塔-线体系的近场脉冲型地震反应幅值随地震动脉冲周期增大而增大。将等效脉冲模型引入大跨越输电塔-线体系近场响应分析,结果表明:塔-线体系在等效脉冲作用下的响应与实际地震动相近,将等效脉冲用于分析大跨越输电塔-线体系的地震响应能够弥补实际近场脉冲型地震动数目过少的不足。
Dynamic characteristics of a large crossing transmission tower-line system(LCTTL) are analyzed.The seismic responses of a large crossing transmission tower-line system subjected to near-fault pulse-like ground motions and ordinary ground motions are compared.The characteristics of responses caused by near-fault pulse-like ground motions are presented.It is shown that the seismic responses of LCTL induced by near-fault pulse-like ground motions are severer than the responses subjected to ordinary ground motions.The amplitude of seismic responses increases with the pulse period of near-fault pulse-like ground motions.An equivalent pulse model is introduced to seismic response evaluation of LCTL.The results demonstrate that the equivalent pulse model can capture the important response characteristics of the near-fault records.The application of equivalent pulse model in seismic responses analysis of LCTL can augment the number of near-fault record set.
Dynamic characteristics of a large crossing transmission tower-line system(LCTTL) are analyzed.The seismic responses of a large crossing transmission tower-line system subjected to near-fault pulse-like ground motions and ordinary ground motions are compared.The characteristics of responses caused by near-fault pulse-like ground motions are presented.It is shown that the seismic responses of LCTL induced by near-fault pulse-like ground motions are severer than the responses subjected to ordinary ground motions.The amplitude of seismic responses increases with the pulse period of near-fault pulse-like ground motions.An equivalent pulse model is introduced to seismic response evaluation of LCTL.The results demonstrate that the equivalent pulse model can capture the important response characteristics of the near-fault records.The application of equivalent pulse model in seismic responses analysis of LCTL can augment the number of near-fault record set.
引文
[1]台湾地震工程研究中心.九二一集集大地震全面勘灾精简报告[R].中国,台湾:台湾地震工程研究中心,1999.NCREE.Damage report on 921 Chi-chi earthquake(draft)[R].Taiwan,China:NCREE,1999.(in Chinese)
[2]台湾地震工程研究中心.九二一集集大地震全面勘灾精简报告-维生线震害调查[R].中国,台湾:台湾地震工程研究中心,1999.NCREE.Damage report on 921 Chi-chiearthquake-lifeline system[R].Taiwan,China:NCREE,1999.(in Chinese)
[3]台湾地震工程研究中心.九二一集集大地震震灾调查报告[R].中国,台湾:台湾地震工程研究中心,2001.NCREE.Damage report on 921 Chi-chi earthquake[R].Taiwan,China:NCREE,2001.(in Chinese)
[4]尹荣华,李东亮,刘戈林,翟桐.高压输电塔震害及抗震研究[J].世界地震工程,2005,21(1):51―54.Yin Ronghua,Li Dongliang,Liu Gelin,Zhai Tong.Seismic damage and analysis of power transmissionstowers[J].World Earthquake Engineering,2005,21(1):51―54.(in Chinese)
[5]岳茂光,王东升,李宏男,翟桐.近场地震动作用下输电塔-导线体系反应分析[J].地震工程与工程振动,2005,25(4):116―125.Yue Maoguang,Wang Dongsheng,Li Hongnan,ZhaiTong.Response of power transmission tower-cablesystem subjected to near-fault ground motions[J].Journal of Earthquake Engineering and EngineeringVibration,2005,25(4):116―125.(in Chinese)
[6]DLT5095-1999,110~500kV架空送电线路设计技术规程[S].北京:中国电力出版社,1999.DLT5095-1999,Technical code for designing110~500kV overhead transmission line[S].Beijing:China Electric Power Press,1999.(in Chinese)
[7]Mohamed Mohsen El-Attar.Nonlinear dynamics andseismic response of power transmission lines[D].McMaster University,1997:72―74.
[8]Ozono S,Maeda J,Makino M.Characteristics ofin-plane free vibration of transmission line systems[J].Engineering Structures,1988,10(3):272―280.
[9]Alavi B,Krawinkler H.Behavior of moment-resistingframe structures subjected to near-fault ground motions[J].Earthquake Engineering and Structural Dynamics,2004,33:687―706.
[10]Menun C,Fu Qiang.An analytical model for near-faultground motions and the response of SDOF system[C].Boston,Massachusetts:Mira Digital Publishing,2002.
[11]Hall JF,Heaton TH,Halling MW,Wald DJ.Near-sourceground motions and its effects on flexible buildings[J].Earthquake Spectra,1995,11(4):569―605.
[2]台湾地震工程研究中心.九二一集集大地震全面勘灾精简报告-维生线震害调查[R].中国,台湾:台湾地震工程研究中心,1999.NCREE.Damage report on 921 Chi-chiearthquake-lifeline system[R].Taiwan,China:NCREE,1999.(in Chinese)
[3]台湾地震工程研究中心.九二一集集大地震震灾调查报告[R].中国,台湾:台湾地震工程研究中心,2001.NCREE.Damage report on 921 Chi-chi earthquake[R].Taiwan,China:NCREE,2001.(in Chinese)
[4]尹荣华,李东亮,刘戈林,翟桐.高压输电塔震害及抗震研究[J].世界地震工程,2005,21(1):51―54.Yin Ronghua,Li Dongliang,Liu Gelin,Zhai Tong.Seismic damage and analysis of power transmissionstowers[J].World Earthquake Engineering,2005,21(1):51―54.(in Chinese)
[5]岳茂光,王东升,李宏男,翟桐.近场地震动作用下输电塔-导线体系反应分析[J].地震工程与工程振动,2005,25(4):116―125.Yue Maoguang,Wang Dongsheng,Li Hongnan,ZhaiTong.Response of power transmission tower-cablesystem subjected to near-fault ground motions[J].Journal of Earthquake Engineering and EngineeringVibration,2005,25(4):116―125.(in Chinese)
[6]DLT5095-1999,110~500kV架空送电线路设计技术规程[S].北京:中国电力出版社,1999.DLT5095-1999,Technical code for designing110~500kV overhead transmission line[S].Beijing:China Electric Power Press,1999.(in Chinese)
[7]Mohamed Mohsen El-Attar.Nonlinear dynamics andseismic response of power transmission lines[D].McMaster University,1997:72―74.
[8]Ozono S,Maeda J,Makino M.Characteristics ofin-plane free vibration of transmission line systems[J].Engineering Structures,1988,10(3):272―280.
[9]Alavi B,Krawinkler H.Behavior of moment-resistingframe structures subjected to near-fault ground motions[J].Earthquake Engineering and Structural Dynamics,2004,33:687―706.
[10]Menun C,Fu Qiang.An analytical model for near-faultground motions and the response of SDOF system[C].Boston,Massachusetts:Mira Digital Publishing,2002.
[11]Hall JF,Heaton TH,Halling MW,Wald DJ.Near-sourceground motions and its effects on flexible buildings[J].Earthquake Spectra,1995,11(4):569―605.
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