随深度变化的地震动相干性研究
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摘要
利用美国加州强震观测计划(CSMIP)3个台阵的在23次地震中取得的303条地震记录,系统地研究了地震动相干性在不同深度、不同场地条件、不同地震震中距情况下水平分量和竖向分量的变化规律,并提出了合理的经验相干函数模型。结果表明,综合考虑上述各种影响的相干函数模型能使得分析结果更加完善可靠。
The strong ground motion coherence variations with depth both in horizontal and vertical directions were studied by utilizing 303 recordings in three arrays of CSMIP,USA.A new coherence model was suggested here.The results indicated that epicenter distance and site condition may affect coherence variations with depth.
The strong ground motion coherence variations with depth both in horizontal and vertical directions were studied by utilizing 303 recordings in three arrays of CSMIP,USA.A new coherence model was suggested here.The results indicated that epicenter distance and site condition may affect coherence variations with depth.
引文
[1]胡进军.地下地震动参数研究[D].哈尔滨:中国地震局工程力学研究所,2003.
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[10]郑飞,叶继红.空间地震动场的相干性研究[J].振动与冲击,2009,28(9):23-28.ZHENG Fei,YE Ji-hong.Coherency of spatial ground motion field[J].Journal of Vibration and Shock,2009,28(9):23-28.
[11]刘先明,叶继红,李爱群.竖向地震动场的空间相干函数模型[J].工程力学,2004,21(2):140-144.LIU Xian-ming,YE Ji-hong,LI Ai-qun.Space coherency function model of vertical ground motion[J].Engineering Mechanics,2004,21(2):140-144.
[12]钟菊芳,胡晓,屈铁军,等.同一测点不同地震动分量空间相干性分析[J].地震研究,2005,28(4):378-382.ZHONG Ju-fang,HU Xiao,QU Tie-jun,et al.Spatial coherency analysis of different ground motion components at the same observational station[J].Journal of Seismological Research,2005,28(4):378-382.
[13]李英民,吴哲骞,陈辉国.地震动的空间变化特性分析与修正相干模型[J].振动与冲击,2013,32(2):164-170.LI Ying-min,WU Zhe-qian,CHEN Hui-gao.Analysis and modeling for characteristcs of spatially varying ground motion[J].Journal of Vibration and Shock,2013,32(2):164-170.
[2]王济,胡晓.MATLAB在振动信号处理中的应用[M].北京:中国水利水电出版社,2006.
[3]胡聿贤.地震工程学[M].北京:地震出版社,1988.
[4]Nakamura H,Yamazaki F.Spatial variation of earthquake ground motion based on dense array records[J].Transaction of the 13th International Conference on Structure Mechanics in reactor Technology,1995,3:19-24.
[5]Harichandran R S,Vanmarcke E H.Stochastic variation of earthquake ground motion in space and time[J].J Eng Mech Div,1986,112(2):154-174.
[6]LohC H,Lin S G.Directionality and simulation in spatial variation of seismic waves[J].Eng Struct,1990,12(2):134-143.
[7]屈铁军,王君杰,王前信.空间变化的地震动功率谱的实用模型[J].地震学报,1996,18(1):55-62.QU Tie-jun,WANG Jun-jie,WANG Qian-xin.Power spectral model of spatial variation[J].ACTC Seismologica Sinica,1996,18(1):55-62.
[8]冯启民,胡聿贤.空间相关地面运动的数学模型[J].地震工程与工程振动,1981,1(2):1-8.FENG Qi-min,HU Yu-xian.Mathematic model of spatial correlation of ground motions[J].Earthquake Engineering and Engineering Vibration,1981,1(2):1-8.
[9]丁海平,刘启方,金星,等.基岩地震动的一个相干函数模型—倾斜滑断层情形[J].地震工程与工程振动,2003,23(2):8-11.DING Hai-ping,LIU Qi-fang,JIN Xing.A coherency model of ground motion on base-rock corresponding to dip-slip fault[J].Earthquake Engineering and Engineering Vibration,2003,23(2):8-11.
[10]郑飞,叶继红.空间地震动场的相干性研究[J].振动与冲击,2009,28(9):23-28.ZHENG Fei,YE Ji-hong.Coherency of spatial ground motion field[J].Journal of Vibration and Shock,2009,28(9):23-28.
[11]刘先明,叶继红,李爱群.竖向地震动场的空间相干函数模型[J].工程力学,2004,21(2):140-144.LIU Xian-ming,YE Ji-hong,LI Ai-qun.Space coherency function model of vertical ground motion[J].Engineering Mechanics,2004,21(2):140-144.
[12]钟菊芳,胡晓,屈铁军,等.同一测点不同地震动分量空间相干性分析[J].地震研究,2005,28(4):378-382.ZHONG Ju-fang,HU Xiao,QU Tie-jun,et al.Spatial coherency analysis of different ground motion components at the same observational station[J].Journal of Seismological Research,2005,28(4):378-382.
[13]李英民,吴哲骞,陈辉国.地震动的空间变化特性分析与修正相干模型[J].振动与冲击,2013,32(2):164-170.LI Ying-min,WU Zhe-qian,CHEN Hui-gao.Analysis and modeling for characteristcs of spatially varying ground motion[J].Journal of Vibration and Shock,2013,32(2):164-170.
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