基岩地震动的一个相干函数模型——倾滑断层情形

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英文篇名：A coherency model of ground motion on base-rock corresponding to dip-slip fault 中文刊名：地震工程与工程振动 英文刊名：Earthquake Engineering and Engineering Vibration 作者：丁海平 ; 刘启方 ; 金星 ; 袁一凡 英文作者：DING Haiping1 ; 2 ; LIU Qifang2 ; JIN Xing2 ; YUAN Yifan2(1.Harbin Institute of Technology ; Harbin ; 150080 ; China ; 2. Institute of Engineering Mechanics ; China Seismological Bureau ; Harbin 150080 ; China) 中文关键词：弹性介质 ; 地震动空间变化 ; 相干函数 ; 倾滑断层 ; 随机振动 英文关键词：elastic media ; spatial variation of ground motion ; coherency function ; dip-slip fault ; stochastic vibration 出版日期：2003-04-30 机构：哈尔滨工业大学,中国地震局工程力学研究所,中国地震局工程力学研究所,中国地震局工程力学研究所 哈尔滨150080,中国地震局工程力学研究所,哈尔滨150080 ,哈尔滨150080 ,哈尔滨150080 ,哈尔滨150080 年：2003 期：02 出版单位：地震工程与工程振动

摘要

本文研究了基岩随机地震动的空间变化规律,考虑了震源破裂速度、子源个数、震源深度和介质传播速度等因素的影响。对应于每个样本,用数值模拟方法计算了采用震源位错模型的弹性半空间近场地震动场,最后通过统计方法给出了一个倾滑断层情形下的近场基岩地震动的相干函数模型。这一方法可以补充常用的统计方法因观测资料有限而导致的欠缺。
In this paper, the spatial variation of stochastic ground motions at rock, which considering the factors of rupture velocity, number of subsources, depth of epicenter and propagation velocity, is studied. Corresponding to the elastic halfspace model with dislocation source of fault, nearfield ground motions are calculated by numerical simulation method for every stochastic sample. Finally, a coherency model for baserock site corresponding to dipslip fault by statistic method is proposed. As an additional approach, the method is effective to study spatial variation of ground motions. 

引文

[1]　廖振鹏,工程波动理论导引(第二版)[M].北京:科学出版社,2002.
    [2]　袁一凡,廖振鹏,弹性半空间位错内源的数值解[J].地震学报,1984,6(3),324-340.
    [3]　Abrahamson,N.A.,Schbeider,J.E.,Empiricalspatialcoherencyfunctionsforapplicationtosoil-structureanalysis[J].EarthquakeSpectra,1991,7(1):1-27.
    [4]　Harichndran,R.S.andVanmanmarcheE.H.,Stochasticvariationofearthquakegroundmotioninspaceandtime[J].JournalofEngineeringMechanics,ASCE,1986,111(),154-174.
    [5]　Kiureghian,A.D.,Acoherencymodelforspatiallyvaryinggroundmotions[J].EarthquakeEngineeringandStructuralDynamics,1996,25(1):99-111.
    [6]　LohC.H.,AnalysisofspatialvariationofseismicwavesandgroundmovementsfromSmart-1arraydata[J].EarthquakeEngineeringandStructuralDynamics,1985,13(5):561-581.
    [7]　LucoJE,WongHL.Responseofarigidfoundationtoaspatiallyrandomgroundmotion[J].EarthquakeEngineering＆StructureDynamics,1986,14:891-908.
    [8]　Nakamura,H.andYamazaki,F.Spatialvariationofearthquakegroundmotionbasedondensearrayrecords[A].Transactionofthe13thInternationalConferenceonStructureMechanicsinreactorTechnology[C].1995,Vol.3,19-24.
    [9]　QuTJ,WangJJ,WangQX,Apracticalmodelforthepowerspectrumofspatiallyvariantgroundmotion[J].ActaSeismologicaSinica1996,9(1),69-79.
    [10]　SomervillePG,MclarenJP,SaikiaCK.Site-specificestimationofspatialincoherenceofstronggroundmotion,inEarthquakeEngineeringandSoilDynamicsⅡ,Recentadvancesingroundmotionevaluation[J].ASCE,1988,20:189-202.
    [11]　SomervillePG,MclarenJP,SenMK,HelmbergerDV.Theinfluenceofsiteconditiononthespatialincoherenceofgroundmotions[J].StructureSafety1991,10(1-3):1-14.