弹性SDOF体系地震动输入能量的影响因素分析
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摘要
按美国抗震设计规范ATC 3-06的分类标准将4种场地类别上的420条地震波记录分为12组,进行了大量的单自由度(SDOF)体系的弹性时程分析;重点研究了场地类别、地震设计分组及阻尼比对地震动输入能量的影响;通过回归分析建立了考虑不同阻尼比影响的地震峰值等效速度与地震特征周期的相关公式。结果表明:随着阻尼比的增大,地震动输入能量呈降低趋势;地震设计分组及场地类别对地震动输入能量有显著影响。
420 earthquake wave records on 4 soil sites were classified into 12 groups according to classification method of ATC 3-06 seismic design code,and a great deal of elastic time history analyses of single degree of freedom(SDOF) systems were carried out.The influence parameters,including soil site,earthquake design group and damping ratio were emphatically investigated.At last,the related formulae between earthquake peak equivalent velocity and characteristic period were established by means of regression analysis considering the effects of different damping ratios.The results indicate that earthquake input energy decreases with damping ratio increasing.Soil site and earthquake design group have significantly effect on earthquake input energy.
420 earthquake wave records on 4 soil sites were classified into 12 groups according to classification method of ATC 3-06 seismic design code,and a great deal of elastic time history analyses of single degree of freedom(SDOF) systems were carried out.The influence parameters,including soil site,earthquake design group and damping ratio were emphatically investigated.At last,the related formulae between earthquake peak equivalent velocity and characteristic period were established by means of regression analysis considering the effects of different damping ratios.The results indicate that earthquake input energy decreases with damping ratio increasing.Soil site and earthquake design group have significantly effect on earthquake input energy.
引文
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[11]刘哲锋,沈蒲生.地震总输入能量谱的拟速度谱估计[J].工程抗震与加固改造,2008,30(2):20-23,32.LIU Zhe-feng,SHEN Pu-sheng.Evaluation of Hys-teric Energy to Input Energy Ratio in Tall HybridStructures[J].Earthquake Resistant Engineering andRetrofitting,2008,30(2):20-23,32.
[12]周云,乐登,邓雪松.设计用地震动总输入能量谱研究[J].工程抗震与加固改造,2008,30(5):1-7.ZHOU Yun,LE Deng,DENG Xue-song.Research onInput Energy Spectra for Design of EarthquakeStrong Motion[J].Earthquake Resistant Engineeringand Retrofitting,2008,30(5):1-7.
[13]GB 50011—2010,建筑抗震设计规范[S].GB 50011—2010,Code for Seismic Design of Build-ings[S].
[14]BRUNEAU M,WANG N.Some Aspects of EnergyMethods for the Inelastic Seismic Response of DuctileSDOF Structures[J].Engineering Structures,1996,18(1):1-12.
[15]ATC 3-06,Tentative Provisions for the Developmentof Seismic Regulations for Buildings[S].
[16]田丰,王晋国,王明祥.基于分形理论的地震数据分析[J].长安大学学报:自然科学版,2008,28(2):108-110.TIAN Feng,WANG Jin-guo,WANG Ming-xiang.Treatment of Seismic Datum Based on Fractal Theory[J].Journal of Changan University:Natural ScienceEdition,2008,28(2):108-110.
[17]周勇军,彭晓彬,赵煜,等.简支梁桥顺桥向地震动分析[J].交通运输工程学报,2007,7(6):86-89.ZHOU Yong-jun,PENG Xiao-bin,ZHAO Yu,et al.Analysis of Longitudinal Seismic Vibration for Simp-ly-supported Beam Bridge[J].Journal of Traffic andTransportation Engineering,2007,7(6):86-89.
[18]江辉,朱晞,倪永军,等.基于多因素分析的桥梁结构地震滞回耗能比值谱研究[J].中国公路学报,2011,24(1):50-58.JIANG Hui,ZHU Xi,NI Yong-jun,et al.Research onSeismic Hysteretic Energy Dissipation Ratio Spectrafor Bridge Structure Based on Multi-factor Analysis[J].China Journal of Highway and Transport,2011,24(1):50-58.
[2]NURTUG A,SUCULOGLU H.Prediction of SeismicEnergy Dissipation in SDOF Systems[J].EarthquakeEngineering&Structural Dynamics,1995,24(9):1215-1223.
[3]BERG G V,THOMAIDES S S.Energy Consumptionby Structures in Strong-motion Earthquakes[C]//WCEE.Proceedings of the 2nd World Conference onEarthquake Engineering.Tokyo:WCEE,1960:681-696.
[4]MCKEVITT W E,ANDERSON D L,CHEERY S.Hysteretic Energy Spectra in Seismic Design[C]//WCEE.Proceedings of the 7th World Conference onEarthquake Engineering.Istanbul:WCEE,1980:487-494.
[5]ZAHRAH T F,HALL W J.Earthquake Energy Ab-sorption in SDOF Structures[J].Journal of StructuralEngineering,1984,110(8):1757-1772.
[6]AKIYAMA H.Earthquake Resistant Limit-state De-sign for Building[M].Tokyo:University of TokyoPress,1985.
[7]KUWAMURA H,GALAMBOS T V.EarthquakeLoad for Structural Reliability[J].Journal of Struc-tural Engineering,1989,115(6):1446-1462.
[8]FAJFAR P,VIDIC T,FISCHINGER M.Seismic De-mand in Medium and Long Period Structures[J].Earthquake Engineering&Structural Dynamic,1989,18(8):1133-1144.
[9]程光煜,叶列平.弹性SDOF系统的地震动输入能量谱[J].工程抗震与加固改造,2006,28(5):1-8.CHENG Guang-yu,YE Lie-ping.Earthquake InputEnergy Spectra of Elastic SDOF Systems[J].Earth-quake Resistant Engineering and Retrofitting,2006,28(5):1-8.
[10]刘哲锋,沈蒲生.地震动输入能量谱的研究[J].工程抗震与加固改造,2006,28(4):1-5.LIU Zhe-feng,SHEN Pu-sheng.Study on Input En-ergy Spectra of Earthquake Strong Motion[J].Earth-quake Resistant Engineering and Retrofitting,2006,28(4):1-5.
[11]刘哲锋,沈蒲生.地震总输入能量谱的拟速度谱估计[J].工程抗震与加固改造,2008,30(2):20-23,32.LIU Zhe-feng,SHEN Pu-sheng.Evaluation of Hys-teric Energy to Input Energy Ratio in Tall HybridStructures[J].Earthquake Resistant Engineering andRetrofitting,2008,30(2):20-23,32.
[12]周云,乐登,邓雪松.设计用地震动总输入能量谱研究[J].工程抗震与加固改造,2008,30(5):1-7.ZHOU Yun,LE Deng,DENG Xue-song.Research onInput Energy Spectra for Design of EarthquakeStrong Motion[J].Earthquake Resistant Engineeringand Retrofitting,2008,30(5):1-7.
[13]GB 50011—2010,建筑抗震设计规范[S].GB 50011—2010,Code for Seismic Design of Build-ings[S].
[14]BRUNEAU M,WANG N.Some Aspects of EnergyMethods for the Inelastic Seismic Response of DuctileSDOF Structures[J].Engineering Structures,1996,18(1):1-12.
[15]ATC 3-06,Tentative Provisions for the Developmentof Seismic Regulations for Buildings[S].
[16]田丰,王晋国,王明祥.基于分形理论的地震数据分析[J].长安大学学报:自然科学版,2008,28(2):108-110.TIAN Feng,WANG Jin-guo,WANG Ming-xiang.Treatment of Seismic Datum Based on Fractal Theory[J].Journal of Changan University:Natural ScienceEdition,2008,28(2):108-110.
[17]周勇军,彭晓彬,赵煜,等.简支梁桥顺桥向地震动分析[J].交通运输工程学报,2007,7(6):86-89.ZHOU Yong-jun,PENG Xiao-bin,ZHAO Yu,et al.Analysis of Longitudinal Seismic Vibration for Simp-ly-supported Beam Bridge[J].Journal of Traffic andTransportation Engineering,2007,7(6):86-89.
[18]江辉,朱晞,倪永军,等.基于多因素分析的桥梁结构地震滞回耗能比值谱研究[J].中国公路学报,2011,24(1):50-58.JIANG Hui,ZHU Xi,NI Yong-jun,et al.Research onSeismic Hysteretic Energy Dissipation Ratio Spectrafor Bridge Structure Based on Multi-factor Analysis[J].China Journal of Highway and Transport,2011,24(1):50-58.
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