震源参数对地震动相干函数的影响
|
摘要
基于运动学震源模型,以弹性半空间作为传播介质模型,采用显式有限元数值模拟方法进行强地面震动数值模拟,根据模拟结果考察了震源深度、断层破裂子源大小、破裂速度和断层走向等震源参数对地震动相干函数的影响,结果表明:震源深度和断层走向对相干函数的影响较大。并根据统计结果给出了一个基岩地震动的相干函数模型。
Using an elastic half-space model,the effects of source parameters on spatial variation of stochastic ground motions were studied here by means of the explicit finite element method and the kinematic source model.The results showed that the fault depth,the rupture velocity,the size of sub-source and the fault direction have influence on the coherency function of the ground motion,especially,the effects of the fault depth and the fault direction are larger.At last,a coherency function model for base-rock motion with statistic method was proposed.
Using an elastic half-space model,the effects of source parameters on spatial variation of stochastic ground motions were studied here by means of the explicit finite element method and the kinematic source model.The results showed that the fault depth,the rupture velocity,the size of sub-source and the fault direction have influence on the coherency function of the ground motion,especially,the effects of the fault depth and the fault direction are larger.At last,a coherency function model for base-rock motion with statistic method was proposed.
引文
[1]刘启方,袁一凡,金星.近断层地震动的基本特征[J].地震工程与工程振动,2006,26(1):1-10.
[2]Loh C H.Analysis of spatial variation of seismic waves and ground movements from Smart-1array data[J].Earth-quake Engineering and Structural Dynamics,1985,13(5):561-581.(上接第18页)
[3]Abrahamson NA,Schbeider J E.Empirical spatial coherency functions for application to soil-structure analysis[J].Earth-quake Spectra,1991,7(1):1-27.
[4]Harichndran R S,Vanmanmarche E H.Stochastic variation of earthquake ground motion in space and time[J].Journal of Engineering Mechanics,ASCE,1986,111:154-174.
[5]Nakamura H,Yamazaki F.Spatial variation of earthquake ground motion based on dense array records[C]Transaction of the13thInternational Conference on Structure Mechanics in reactor Technology,1995,3:19-24.
[6]Qu TJ,Wang J J,Wang QX.Apractical model for the pow-er spectrum of spatially variant ground motion[J].Acta Seis-mologica Sinica,1996,9(1):69-79.
[7]Kiureghian A D.A coherency model for spatially varying ground motions[J].Earthquake Engineering and Structural Dynamics,1996,25(1):99-111.
[8]Somerville P G,Mclaren J P,Saikia C K.Site-specific esti-mation of spatial incoherence of strong ground motion,in Earthquake Engineering and Soil DynamicsⅡ[C].Recent advances in ground motion evaluation.No.20,ASCE,1988:189-202.
[9]Somerville P G,Mclaren J P,Sen MK,et al.The influence of site condition on the spatial incoherence of ground motions[J].Structure Safety1991,10(1-3):1-14.
[10]Zerva A,Shinozuka M.Stochastic differential ground motion[J].Structure Safety,1991,10(1-3):129-143.
[11]Ding HP,Liu QF,Jin X,et al.Acoherency function model of ground motion at base-rock corresponding to strike-slip fault[J].Acta Seismologica Sinica,2004,17(1):64-67.
[12]Zerva A,Harada T.Effect of surface layer stoehastieity on seismic ground motion coherence and strain estimates[J].Soll Dynamics and Earthquake Engineering,1997,(16):445-450.
[13]李杰,廖松涛.工程场地地震动相干函数的数值模拟[J].地震工程与工程振动,2003,23(2):12-17.
[14]陈原,李杰.一致激励条件下非线性工程场地地震动相干函数分析[J].防灾减灾工程学报,2006,26(4):369-376.
[15]丁海平,金星,刘启方,等.场地条件对地震动相干函数的影响[J].地震工程与工程振动,2003,23(1):1-5.
[16]The Effects of Surface Geology on Seismic Motion:Recent Progress and New Horizon on ESG Study[C].Proceedings of the Second International Symposium,A.A.Balkema,Rotter-dam,1999.
[17]Irikura K,Miyake H.Recipe for predicting strong ground mo-tions:The state of the art and future prospects[C].Proceed-ings of the8th U.S.National Conference on Earthquake Engi-neering,Paper No.744,2006.
[18]丁海平,刘启方,金星.长周期地震动三维有限元数值模拟方法[J].地震工程与工程振动,2006,26(5):27-31.
[19]刘启方,金星,丁海平.复杂场地条件下震源参数对断层附近长周期地震动的影响[J].地球物理学报,2008,51(1):186-196.
[20]Wells D L,Coppersmith K J.New empirical relationships among magnitude,rupture length,rupture width,rupture are-a,and surface displacement[J].Bull.Seism.Soc.Am,1994,84(4):974-1002.
[21]Somerville P,Irikura K,Graves R,et al.Characterizing crustal earthquake slip models for the prediction of strong ground motion[J].Seism.Res.Lett,1999,70(1):59-80.
[22]廖振鹏.工程波动理论导引(第二版)[M].北京:科学出版社,2002,190-213.
[23]Aki K,Richards P G.Quantitative Seismology:Theory and Methods[M].W.H.Freeman and Company,San Francis-co,CA.1980.
[24]刘启方.基于运动学和动力学震源模型的近断层地震研究[D].哈尔滨:中国地震局工程力学研究所,2005.
[25]丁海平,刘启方,黄勇,等.三维地震动场数值模拟并行计算系统[J].地震工程与工程振动,2004,24(2):19-22.
[2]Loh C H.Analysis of spatial variation of seismic waves and ground movements from Smart-1array data[J].Earth-quake Engineering and Structural Dynamics,1985,13(5):561-581.(上接第18页)
[3]Abrahamson NA,Schbeider J E.Empirical spatial coherency functions for application to soil-structure analysis[J].Earth-quake Spectra,1991,7(1):1-27.
[4]Harichndran R S,Vanmanmarche E H.Stochastic variation of earthquake ground motion in space and time[J].Journal of Engineering Mechanics,ASCE,1986,111:154-174.
[5]Nakamura H,Yamazaki F.Spatial variation of earthquake ground motion based on dense array records[C]Transaction of the13thInternational Conference on Structure Mechanics in reactor Technology,1995,3:19-24.
[6]Qu TJ,Wang J J,Wang QX.Apractical model for the pow-er spectrum of spatially variant ground motion[J].Acta Seis-mologica Sinica,1996,9(1):69-79.
[7]Kiureghian A D.A coherency model for spatially varying ground motions[J].Earthquake Engineering and Structural Dynamics,1996,25(1):99-111.
[8]Somerville P G,Mclaren J P,Saikia C K.Site-specific esti-mation of spatial incoherence of strong ground motion,in Earthquake Engineering and Soil DynamicsⅡ[C].Recent advances in ground motion evaluation.No.20,ASCE,1988:189-202.
[9]Somerville P G,Mclaren J P,Sen MK,et al.The influence of site condition on the spatial incoherence of ground motions[J].Structure Safety1991,10(1-3):1-14.
[10]Zerva A,Shinozuka M.Stochastic differential ground motion[J].Structure Safety,1991,10(1-3):129-143.
[11]Ding HP,Liu QF,Jin X,et al.Acoherency function model of ground motion at base-rock corresponding to strike-slip fault[J].Acta Seismologica Sinica,2004,17(1):64-67.
[12]Zerva A,Harada T.Effect of surface layer stoehastieity on seismic ground motion coherence and strain estimates[J].Soll Dynamics and Earthquake Engineering,1997,(16):445-450.
[13]李杰,廖松涛.工程场地地震动相干函数的数值模拟[J].地震工程与工程振动,2003,23(2):12-17.
[14]陈原,李杰.一致激励条件下非线性工程场地地震动相干函数分析[J].防灾减灾工程学报,2006,26(4):369-376.
[15]丁海平,金星,刘启方,等.场地条件对地震动相干函数的影响[J].地震工程与工程振动,2003,23(1):1-5.
[16]The Effects of Surface Geology on Seismic Motion:Recent Progress and New Horizon on ESG Study[C].Proceedings of the Second International Symposium,A.A.Balkema,Rotter-dam,1999.
[17]Irikura K,Miyake H.Recipe for predicting strong ground mo-tions:The state of the art and future prospects[C].Proceed-ings of the8th U.S.National Conference on Earthquake Engi-neering,Paper No.744,2006.
[18]丁海平,刘启方,金星.长周期地震动三维有限元数值模拟方法[J].地震工程与工程振动,2006,26(5):27-31.
[19]刘启方,金星,丁海平.复杂场地条件下震源参数对断层附近长周期地震动的影响[J].地球物理学报,2008,51(1):186-196.
[20]Wells D L,Coppersmith K J.New empirical relationships among magnitude,rupture length,rupture width,rupture are-a,and surface displacement[J].Bull.Seism.Soc.Am,1994,84(4):974-1002.
[21]Somerville P,Irikura K,Graves R,et al.Characterizing crustal earthquake slip models for the prediction of strong ground motion[J].Seism.Res.Lett,1999,70(1):59-80.
[22]廖振鹏.工程波动理论导引(第二版)[M].北京:科学出版社,2002,190-213.
[23]Aki K,Richards P G.Quantitative Seismology:Theory and Methods[M].W.H.Freeman and Company,San Francis-co,CA.1980.
[24]刘启方.基于运动学和动力学震源模型的近断层地震研究[D].哈尔滨:中国地震局工程力学研究所,2005.
[25]丁海平,刘启方,黄勇,等.三维地震动场数值模拟并行计算系统[J].地震工程与工程振动,2004,24(2):19-22.
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