多尺度分析在近断层地震动频谱分析中的应用
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摘要
近断层地震动是一类较特殊的破坏性地震动。为进一步探讨其工程特性,本文采用多尺度分析方法对选自近期12次大地震的53条典型近断层地震动进行了分解,得到了266条低频分量。通过分析地震动的低频分量组成、脉冲特性以及反应谱特性,对该类地震动的工程特性有了一些新的认识。
Near-fault ground motion is a special destructive ground motion. For further investigate its engineering characteristics,53 typical near-fault ground motions selected from 12 recent major earthquakes were decomposed on the basis of multi-scale analysis method,and a total of 266 ground motion components were obtained. Through investigating the composition of low-frequency components,pulse characteristics and response spectrum,some new understandings on the engineering characteristics of near-fault ground motion were revealed.
Near-fault ground motion is a special destructive ground motion. For further investigate its engineering characteristics,53 typical near-fault ground motions selected from 12 recent major earthquakes were decomposed on the basis of multi-scale analysis method,and a total of 266 ground motion components were obtained. Through investigating the composition of low-frequency components,pulse characteristics and response spectrum,some new understandings on the engineering characteristics of near-fault ground motion were revealed.
引文
[1]Rupakhety R,Sigurdsson S U,Papageorgiou A S,et al.Quantification of ground-motion parameters and response spectra in the near-fault region[J].Bulletin of Earthquake Engineering,2011,9(4):893-930.
[2]Zamora M,Riddell R.Elastic and inelastic response spectra considering near-fault effects[J].Journal of Earthquake Engineering,2011,15(5):775-808.
[3]Adanur S,Ahmet C A,Alemdar B,et al.Comparison of near-fault and far-fault ground motion effects on geometrically nonlinear earthquake behavior of suspension bridges[J].Natural Hazards,2012,64(1):593-614.
[4]Cavdar O.Probabilistic sensitivity analysis of two suspension bridges in Istanbul,Turkey to near-and far-fault ground motion[J].Natural Hazards and Earth System Sciences,2012,12(2):459-473.
[5]Takewaki I,Murakami S,Fujita K.The 2011 off the Pacific coast of Tohoku earthquake and response of high-rise buildings under long-period ground motions[J].Soil Dynamics and Earthquake Engineering,2011,31(11):1511-1528.
[6]Makris N.Rigidity-plasticity-viscosity:can electrorheological dampers protect base-isolated structures from near-source ground motions[J].Earthquake Engineering and Structural Dynamics.,1997,26(5):71-91.
[7]Krawinkler H,Alavi B.Development of an improved design procedure for near-fault ground motions[C]∥SMIP 98 seminar on utilization of strong motion data,Oakland,CA,1998:21-41.
[8]Bozorgnia Y,Mahin S A.Ductility and strength demands of near-fault ground motions of the Northridge earthquake[C]∥Proceedings of the 6th US national conference on earthquake engineering,Seattle:Earthquake Engineering Research Institute,1998.
[9]Baker J W.Quantitative classification of near-fault ground motions using wavelet analysis[J].Bulletin of Seismological Society of America,2007,97(5):1486-1501.
[10]Bray J D,Rodriguez-Marek A.Characterization of forward-directivity ground motions in the near-fault region[J].Soil Dynamics and Earthquake Engineering,2004,24(11):815-828.
[11]Alavi B,Krawinkler H.Consideration of near-fault ground motion effects in seismic design[C]∥Proceedings 6th World Conference on Earthquake Engineering,New Zealand:The New Zealand Society for Earthquake Engineering,2000,2665:1-8.
[12]Somerville P G.Magnitude scaling of the near-faultrupture directivity pulse[J].Physics of the Earth and Planetary Interiors,2003 137(1-4):201-212.
[13]谢俊举,温增平,李小军,等.基于小波方法分析汶川地震近断层地震动的速度脉冲特性[J].地球物理学报,2012,55(6):1963-1972.XIE Junju,WEN Zengping,Li Xiaojun,et al.Analysis of velocity pulse for near-fault strong motions from the wenchuan earthquake based on wavelet method[J].Chinese Journal of Geophysics,2012,55(6):1963-1972.(in Chinese)
[14]Gillie J L,Rodriguez-Mark A,Daniel C M.Strength reduction factors for near-fault forward-directivity ground motions[J].Engineering Structures,2010,32(1):273-285.
[15]Chopra A K,Chintanapakdee C.Comparing response of SDF systems to near-fault and far-fault earthquake motions in the context of spectral regions[J].Earthquake Engineering and Structural Dynamics,2001;30(12):1769-1789.
[16]Yaghmaei-Sabegh S.Application of wavelet transformation on characterization of inelastic displacement ratio spectra for pulse-like ground motion[J].Earthquake Engineering,2012,16(4):561-578.
[17]Miranda E.Site dependent strength reduction factors[J].Journal of Structural Engineering,1993,119(12):3503-3519.
[2]Zamora M,Riddell R.Elastic and inelastic response spectra considering near-fault effects[J].Journal of Earthquake Engineering,2011,15(5):775-808.
[3]Adanur S,Ahmet C A,Alemdar B,et al.Comparison of near-fault and far-fault ground motion effects on geometrically nonlinear earthquake behavior of suspension bridges[J].Natural Hazards,2012,64(1):593-614.
[4]Cavdar O.Probabilistic sensitivity analysis of two suspension bridges in Istanbul,Turkey to near-and far-fault ground motion[J].Natural Hazards and Earth System Sciences,2012,12(2):459-473.
[5]Takewaki I,Murakami S,Fujita K.The 2011 off the Pacific coast of Tohoku earthquake and response of high-rise buildings under long-period ground motions[J].Soil Dynamics and Earthquake Engineering,2011,31(11):1511-1528.
[6]Makris N.Rigidity-plasticity-viscosity:can electrorheological dampers protect base-isolated structures from near-source ground motions[J].Earthquake Engineering and Structural Dynamics.,1997,26(5):71-91.
[7]Krawinkler H,Alavi B.Development of an improved design procedure for near-fault ground motions[C]∥SMIP 98 seminar on utilization of strong motion data,Oakland,CA,1998:21-41.
[8]Bozorgnia Y,Mahin S A.Ductility and strength demands of near-fault ground motions of the Northridge earthquake[C]∥Proceedings of the 6th US national conference on earthquake engineering,Seattle:Earthquake Engineering Research Institute,1998.
[9]Baker J W.Quantitative classification of near-fault ground motions using wavelet analysis[J].Bulletin of Seismological Society of America,2007,97(5):1486-1501.
[10]Bray J D,Rodriguez-Marek A.Characterization of forward-directivity ground motions in the near-fault region[J].Soil Dynamics and Earthquake Engineering,2004,24(11):815-828.
[11]Alavi B,Krawinkler H.Consideration of near-fault ground motion effects in seismic design[C]∥Proceedings 6th World Conference on Earthquake Engineering,New Zealand:The New Zealand Society for Earthquake Engineering,2000,2665:1-8.
[12]Somerville P G.Magnitude scaling of the near-faultrupture directivity pulse[J].Physics of the Earth and Planetary Interiors,2003 137(1-4):201-212.
[13]谢俊举,温增平,李小军,等.基于小波方法分析汶川地震近断层地震动的速度脉冲特性[J].地球物理学报,2012,55(6):1963-1972.XIE Junju,WEN Zengping,Li Xiaojun,et al.Analysis of velocity pulse for near-fault strong motions from the wenchuan earthquake based on wavelet method[J].Chinese Journal of Geophysics,2012,55(6):1963-1972.(in Chinese)
[14]Gillie J L,Rodriguez-Mark A,Daniel C M.Strength reduction factors for near-fault forward-directivity ground motions[J].Engineering Structures,2010,32(1):273-285.
[15]Chopra A K,Chintanapakdee C.Comparing response of SDF systems to near-fault and far-fault earthquake motions in the context of spectral regions[J].Earthquake Engineering and Structural Dynamics,2001;30(12):1769-1789.
[16]Yaghmaei-Sabegh S.Application of wavelet transformation on characterization of inelastic displacement ratio spectra for pulse-like ground motion[J].Earthquake Engineering,2012,16(4):561-578.
[17]Miranda E.Site dependent strength reduction factors[J].Journal of Structural Engineering,1993,119(12):3503-3519.
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