合成地震动方法用于研究强地震动长周期特性的探讨
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摘要
合成地震动一直是地震学研究中一个非常活跃的领域。针对目前长周期结构物抗震设计缺少宽频带强震记录的现状 ,利用“反射率法”和“围道积分法”等合成地震动方法对地震动长周期特性进行了探讨。结果表明 :合成地震动方法是研究地震动长周期特性的一个有效方法 ;在地震动长周期成份中 ,面波起着重要作用。因此长周期结构物的抗震设计必须考虑面波的影响。
Synthetic earthquake ground motion has been very active domain in seismic study all along. In the light of being short of broadband strong seismic records in aseismic design of long period structures at present, using reflectance, contour integral and other methods of synthetic earthquake ground motion, the character of long period for earthquake ground motion is approached. The results show that the methods of earthquake ground motion are effective in studying the character of long period for earthquake ground motion; surface wave plays an important role in the long period component of earthquake ground motion and the aseismic design for the long period structures must take surface wave into account.
Synthetic earthquake ground motion has been very active domain in seismic study all along. In the light of being short of broadband strong seismic records in aseismic design of long period structures at present, using reflectance, contour integral and other methods of synthetic earthquake ground motion, the character of long period for earthquake ground motion is approached. The results show that the methods of earthquake ground motion are effective in studying the character of long period for earthquake ground motion; surface wave plays an important role in the long period component of earthquake ground motion and the aseismic design for the long period structures must take surface wave into account.
引文
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[8]D .G .Harkrider.PotentialsanddisplacementsfortwotheoreticalseismicsourcesGeophys .J .R .astr.Soc ,1976,Vol .47:97-13 3
[9]张之立等 .唐山地震的破裂过程及其力学分析 .地震学报 ,1980 ,2 0 ( 3 ) :111-12 9
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[12 ]牟光迅、姚振兴 .1984年滦县 5 0级地震近场记录的理论模拟 .地震工程与工程振动 ,1991,11( 3 ) :18-3 1
[13 ]YifanYuanetc .Stronggroundmotionsimulationofthe 1976Ninghe ,Chinaearthquake .Bull.Earth .Res .Inst.,Univ .Tokyo .1986,Vol61:
[14 ]M .O .Erdik .Stronggroundmotionseismology .D .ReidelPublishingCompany ,1987.
[2 ]汪素云、俞言祥、吕红山 .利用中国数字地震台网宽频带记录研究长周期地震动反应谱特性 .地震学报 ,1998,2 0 ( 5 ) :481-4 88
[3 ]胡聿贤 .地震工程学 .北京 :地震出版社 ,1988.63 2 -64 2
[4]冯德益 .地震波理论与应用 .北京 :地震出版社 ,1987.
[5 ]K .Aki,P .G .Richards .Quantitativeseismologytheoryandmethods .Vol .1,W .H .FreemanandCompany ,1980 .
[6]D .G .Harkrider .SurfacewaveinmultilayeredelasticmediaI.RayleighandLovewavesfromburiedsourceinamultilayeredelastichalf -space .Bull.Seism .Soc .Am .1964 ,Vol .5 4
[7]郑天愉、姚振兴 .强地面运动的理论地震学研究 .地球物理学报 ,1992 ,3 5 ( 1) :
[8]D .G .Harkrider.PotentialsanddisplacementsfortwotheoreticalseismicsourcesGeophys .J .R .astr.Soc ,1976,Vol .47:97-13 3
[9]张之立等 .唐山地震的破裂过程及其力学分析 .地震学报 ,1980 ,2 0 ( 3 ) :111-12 9
[10 ]国家地震局工程力学研究所 .唐山地震校正加速度数字化记录 .北京 :地震出版社 ,1986.
[11]滕吉文、姚虹、周海南 .北京、天津、唐山和张家口地区的地壳结构 .地球物理学报 ,1979,2 2 ( 3 ) :2 19-2 3 5
[12 ]牟光迅、姚振兴 .1984年滦县 5 0级地震近场记录的理论模拟 .地震工程与工程振动 ,1991,11( 3 ) :18-3 1
[13 ]YifanYuanetc .Stronggroundmotionsimulationofthe 1976Ninghe ,Chinaearthquake .Bull.Earth .Res .Inst.,Univ .Tokyo .1986,Vol61:
[14 ]M .O .Erdik .Stronggroundmotionseismology .D .ReidelPublishingCompany ,1987.
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