汶川大地震中两个基岩强震观测台站的地震动合成
|
摘要
为了深入研究汶川大地震中两个水库坝址受到的地震动影响,采用30个基于有限断层的混合震源模型,结合反演的区域震源谱参数、衰减参数,合成坝址附近两个在汶川大地震中有记录的基岩台站的强地震动。合成的地震动加速度时程、峰值与实际记录作比较,结果表明合成地震动偏大25%～37%。进一步的研究要论证区域参数反演的目标和策略。
In order to deal with the ground motion effect on two dam sites in the great Wenchuan earthquake with magnitude 8. 0,motions at two nearby observation stations where strong motion were recorded in the shock are synthesized from 30 finite fault based hybrid source models and inversed regional parameters of source spectrum and motion attenuation. The synthesized acceleration time histories and peak values are compared with the recordings,and the result shows that the motions synthesized are larger than those recorded by 25% ～ 37%. The further study on the object and strategy of the regional parameter inversion is suggested.
In order to deal with the ground motion effect on two dam sites in the great Wenchuan earthquake with magnitude 8. 0,motions at two nearby observation stations where strong motion were recorded in the shock are synthesized from 30 finite fault based hybrid source models and inversed regional parameters of source spectrum and motion attenuation. The synthesized acceleration time histories and peak values are compared with the recordings,and the result shows that the motions synthesized are larger than those recorded by 25% ～ 37%. The further study on the object and strategy of the regional parameter inversion is suggested.
引文
[1]陈厚群,徐泽平,李敏.汶川大地震和大坝抗震安全[J].水力学报,2008,39(10):1158-1167(Chen Houqun,Xu Zeping,Li Min.Wenchuan Earthquake and seismic safety of large dams[J].Journal of Hydraulic Engineering,2008,39(10):1158-1167(in Chinese))
[2]陈厚群.混凝土高坝强震震例分析和启迪[J].水力学报,2009,40(1):10-18(Chen Houqun.Analysis on damages of high concrete dams subjected to strong earthquake and lessons for learning[J].Journal of Hydraulic Engineering,2009,40(1):10-18(in Chinese))
[3]陶夏新,刘海明,孙晓丹,等.根据有限断层混合震源模型预测汶川大地震的峰值加速度分布[C]//纪念汶川地震一周年地震工程与减轻地震灾害研讨会文集.成都,2009(Tao Xiaxin,Liu Haiming,Sun Xiaodan,et al.Distribution of peak ground motion acceleration in the great Wenchuan earthquake synthesized by finite fault based hybrid source model[C]//Proceedings of Symposium on Earthquake Engineering and Disaster Mitigation for Anniversary of the Wenchuan Earthquake.Chengdu,2009(in Chinese))
[4]Tao Zhengru,Cui Anping,Wang Xiwei,et al.Inversion strategy for seismic source and regional parameters[C]//2012 8th International Conference on Natural Computation,ICNC 2012.Chongqing,2012:675-678
[5]Boore D.Stochastic simulation of high frequency ground motions based on seismological models of the radiated spectra[J].Bull.Seism.Soc.Am.,1983,73(6):1865-1894
[6]Atkinson G,Boore D.Stochastic point source modeling of ground motion in the Cascadia region[J].Seismological Research Letter,1997,68(1):74-85
[7]Atkinson G,Silva W.Stochastic Modeling of California ground motions[J].Bulletin of the Seismological Society of America,2000,90(2):255-274
[8]Tao Xiaxin,Sun Xiaodan,Wang Guoxin.An dynamic corner frequency based source spectral model[C]//Proceedings of the 14th WCEE,Beijing,2008
[9]Boore D.M.Simulation of ground motion using the stochastic method[J].Pure and Applied Geophysics,2003,160:635-676
[10]Frankel A,Mueller C,Barnhard T,et al.National seismic hazard maps:documentation[M].USA:U.S.Geol.Surv.,1996
[11]Atkinson G M,Boore D M.Ground motion relations for eastern north america[J].Bulletin of the Seismological Society of America.1995,85:17-30
[12]Boore D.Stochastic simulation of high frequency ground motions based on seismological models of the radiated spectra[J].Bulletin of the Seismological Society of America.1983,73(6):1865-1894
[13]Beresenv I A,Atkinson G.Stochastic finite-fault modeling of ground motions from the 1994 Northridge,California,earthquake,I.Validation on rock sites[J].Bulletin of the Seismological Society of America.,1998,88(6):1392-1401
[14]Tao Zhengru,Tao Xiaxin,Wang Xiwei.Seismology based ground motion attenuation relationship for Sendai area[J].Advanced Materials Research,2012(382):7-11
[15]霍俊荣,等.地面运动时程强度包线参数的研究[J].地震工程与工程振动,1991,11(1):1-12(Huo Junrong,et al.Study on envelop function parameters of strong ground motion[J].Earthquake Engineering and Engineering Vibration,1991,11(1):1-12(in Chinese))
[2]陈厚群.混凝土高坝强震震例分析和启迪[J].水力学报,2009,40(1):10-18(Chen Houqun.Analysis on damages of high concrete dams subjected to strong earthquake and lessons for learning[J].Journal of Hydraulic Engineering,2009,40(1):10-18(in Chinese))
[3]陶夏新,刘海明,孙晓丹,等.根据有限断层混合震源模型预测汶川大地震的峰值加速度分布[C]//纪念汶川地震一周年地震工程与减轻地震灾害研讨会文集.成都,2009(Tao Xiaxin,Liu Haiming,Sun Xiaodan,et al.Distribution of peak ground motion acceleration in the great Wenchuan earthquake synthesized by finite fault based hybrid source model[C]//Proceedings of Symposium on Earthquake Engineering and Disaster Mitigation for Anniversary of the Wenchuan Earthquake.Chengdu,2009(in Chinese))
[4]Tao Zhengru,Cui Anping,Wang Xiwei,et al.Inversion strategy for seismic source and regional parameters[C]//2012 8th International Conference on Natural Computation,ICNC 2012.Chongqing,2012:675-678
[5]Boore D.Stochastic simulation of high frequency ground motions based on seismological models of the radiated spectra[J].Bull.Seism.Soc.Am.,1983,73(6):1865-1894
[6]Atkinson G,Boore D.Stochastic point source modeling of ground motion in the Cascadia region[J].Seismological Research Letter,1997,68(1):74-85
[7]Atkinson G,Silva W.Stochastic Modeling of California ground motions[J].Bulletin of the Seismological Society of America,2000,90(2):255-274
[8]Tao Xiaxin,Sun Xiaodan,Wang Guoxin.An dynamic corner frequency based source spectral model[C]//Proceedings of the 14th WCEE,Beijing,2008
[9]Boore D.M.Simulation of ground motion using the stochastic method[J].Pure and Applied Geophysics,2003,160:635-676
[10]Frankel A,Mueller C,Barnhard T,et al.National seismic hazard maps:documentation[M].USA:U.S.Geol.Surv.,1996
[11]Atkinson G M,Boore D M.Ground motion relations for eastern north america[J].Bulletin of the Seismological Society of America.1995,85:17-30
[12]Boore D.Stochastic simulation of high frequency ground motions based on seismological models of the radiated spectra[J].Bulletin of the Seismological Society of America.1983,73(6):1865-1894
[13]Beresenv I A,Atkinson G.Stochastic finite-fault modeling of ground motions from the 1994 Northridge,California,earthquake,I.Validation on rock sites[J].Bulletin of the Seismological Society of America.,1998,88(6):1392-1401
[14]Tao Zhengru,Tao Xiaxin,Wang Xiwei.Seismology based ground motion attenuation relationship for Sendai area[J].Advanced Materials Research,2012(382):7-11
[15]霍俊荣,等.地面运动时程强度包线参数的研究[J].地震工程与工程振动,1991,11(1):1-12(Huo Junrong,et al.Study on envelop function parameters of strong ground motion[J].Earthquake Engineering and Engineering Vibration,1991,11(1):1-12(in Chinese))
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