9.21台湾集集地震中场地类别对地震动若干特性的影响
|
摘要
对9.21台湾集集地震主震的404组强震记录按照不同震中距和场地类别进行分组,然后对加速度水平分量和垂直分量的持时、峰值加速度、包络线、反应谱及其均方差作了统计分析。结果表明,场地条件对不同分量加速度某些特征的影响较为显著,断层方向对地震动水平特性也有一定的影响。该结果对地震危险性分析以及结构抗震验算有一定参考价值。此外,对地震动三分量包络线的研究为三维地震动模拟提供了一定参考。
According to the epicentral distance and the site classification,we sorted 404 groups of strong motion recordings of the Chi-chi,Taiwan,China,main shock,and analyzed the statistic features of durations,peak accelerations,envelopes,response spectra and mean square deviations of horizontal and vertical acceleration components.The results indicate that the effect of site classification upon some component characteristics is relatively obvious;furthermore,the direction of fault also has some influence upon horizontal component of ground motion.This result can offer reference for seismic risk analysis and structural aseismic checking computation.In addition,the results from the research on three component envelopes of ground motion can give some reference for 3D ground motion simulation.
According to the epicentral distance and the site classification,we sorted 404 groups of strong motion recordings of the Chi-chi,Taiwan,China,main shock,and analyzed the statistic features of durations,peak accelerations,envelopes,response spectra and mean square deviations of horizontal and vertical acceleration components.The results indicate that the effect of site classification upon some component characteristics is relatively obvious;furthermore,the direction of fault also has some influence upon horizontal component of ground motion.This result can offer reference for seismic risk analysis and structural aseismic checking computation.In addition,the results from the research on three component envelopes of ground motion can give some reference for 3D ground motion simulation.
引文
[1]R ichter C F.E lem entary Seismology[M].San-Francisco:W.H.Freeman and Co.,1958.
[2]D ravinsk i M,D ing G,B iswas N N.S ite Amplification Factor inAnchorage,A laska Based on Long Period M icrotremors[J].Jour-nal of Earthquake Engineering,2003,7(4):555-571.
[3]A ldo Zollo,Anton io Emolo,Andr′eHerrero,et al.H igh frequencystrong ground motion modelling in the Catan ia area[J].Journal ofSeismology,1999,3:279-288.
[4]周锡元.土质条件对建筑物所受地震载荷的影响[A].见:中国科学院工程力学研究所地震工程研究报告集(第二集)[C].北京:科学出版社,1965.
[5]胡聿贤,孙晋平,章在墉,等.场地条件对震害和地震动的影响[J].地震工程与工程振动,1980,1(1):41-54.
[6]施伟华,崔建文,包一峰,等.姚安6.5级地震场地与震害的关系[J].地震研究,2003,26(1):86-91.
[7]施伟华,崔建文,吕明,等.施甸5.9级地震场地与震害的关系[J].地震研究,2002,25(3):295-301.
[8]周正华,周雍年,卢滔,等.竖向地震动特性研究[J].地震工程与工程振动,2003,23(3):25-29.
[9]李小军,彭青.不同类别场地地震动参数的计算分析[J].地震工程与工程振动,2001,21(21):29-36.
[10]李小军,彭青,刘文忠.设计地震动参数确定中的场地影响考虑[J].世界地震工程,2001,17(4):34-41.
[11]周锡元,王广军,苏经宇,等.场地.地基.设计地震[M].北京:地震出版社,1991.
[12]W ang G Q,Zhou X Y,Zhang P Z,et al.Characteristic of ampli-tude and duration for near fau lt strong ground motion from the 1999Ch i-ch i,Taiwan Earthquake[J].Soil Eynam ics and Earth-quake Engineering,2002,22(1):73-96.
[13]W ang G Q,Zhou X Y,Ma Z J,et al.A Prelim inary Study on theRandomness of Response Spectra of the 1999 Ch i-Ch i,Taiwan,and Data F iles from“A Prelim inary Study on the Stochastic Char-acteristics of Response Spectra of the 1999 Ch i-Ch i,Taiwan,Earthquake”[J].Bu lletin of the Seismological Society ofAm eri-ca Special Issue:Ch i-Ch i,Taiwan,2001,91(5):1358-1369.
[14]王国权,周锡元,马宗晋,等.9.21台湾地震近断层强地面运动反应谱与规范设计谱的对比研究[J].工程抗震,2000(增刊):1-10.
[15]Lee C T,Cheng C T,L iao C W,et al.S ite classification of Tai-wan free-field strong-motion stations[J].BSSA,2001,91(5):1283-1297.
[16]Ahm ed E lgamal,L iang C H.Vertical Earthquake G round MotionRecords:An Overview[J].Journal of Earthquake Engineering,2004,8(5):663-697.
[17]胡聿贤.地震工程学[M].北京:地震出版社,1988.
[18]GB 50011-2001,建筑抗震设计规范[S].
[19]倪永军,朱唏.近断层地震的加速度峰值比和反应谱分析[J].北方交通大学学报,2004,28(4):1-5.
[20]石树中,沈建文,楼梦麟.基岩场地强地面运动加速度反应谱统计特征[J].同济大学学报,2002,30(11):1300-1304.
[21]周正华,周雍年,赵刚.强震近场加速度峰值比和反应谱统计分析[J].地震工程与工程振动,2002,22(3):15-18.
[2]D ravinsk i M,D ing G,B iswas N N.S ite Amplification Factor inAnchorage,A laska Based on Long Period M icrotremors[J].Jour-nal of Earthquake Engineering,2003,7(4):555-571.
[3]A ldo Zollo,Anton io Emolo,Andr′eHerrero,et al.H igh frequencystrong ground motion modelling in the Catan ia area[J].Journal ofSeismology,1999,3:279-288.
[4]周锡元.土质条件对建筑物所受地震载荷的影响[A].见:中国科学院工程力学研究所地震工程研究报告集(第二集)[C].北京:科学出版社,1965.
[5]胡聿贤,孙晋平,章在墉,等.场地条件对震害和地震动的影响[J].地震工程与工程振动,1980,1(1):41-54.
[6]施伟华,崔建文,包一峰,等.姚安6.5级地震场地与震害的关系[J].地震研究,2003,26(1):86-91.
[7]施伟华,崔建文,吕明,等.施甸5.9级地震场地与震害的关系[J].地震研究,2002,25(3):295-301.
[8]周正华,周雍年,卢滔,等.竖向地震动特性研究[J].地震工程与工程振动,2003,23(3):25-29.
[9]李小军,彭青.不同类别场地地震动参数的计算分析[J].地震工程与工程振动,2001,21(21):29-36.
[10]李小军,彭青,刘文忠.设计地震动参数确定中的场地影响考虑[J].世界地震工程,2001,17(4):34-41.
[11]周锡元,王广军,苏经宇,等.场地.地基.设计地震[M].北京:地震出版社,1991.
[12]W ang G Q,Zhou X Y,Zhang P Z,et al.Characteristic of ampli-tude and duration for near fau lt strong ground motion from the 1999Ch i-ch i,Taiwan Earthquake[J].Soil Eynam ics and Earth-quake Engineering,2002,22(1):73-96.
[13]W ang G Q,Zhou X Y,Ma Z J,et al.A Prelim inary Study on theRandomness of Response Spectra of the 1999 Ch i-Ch i,Taiwan,and Data F iles from“A Prelim inary Study on the Stochastic Char-acteristics of Response Spectra of the 1999 Ch i-Ch i,Taiwan,Earthquake”[J].Bu lletin of the Seismological Society ofAm eri-ca Special Issue:Ch i-Ch i,Taiwan,2001,91(5):1358-1369.
[14]王国权,周锡元,马宗晋,等.9.21台湾地震近断层强地面运动反应谱与规范设计谱的对比研究[J].工程抗震,2000(增刊):1-10.
[15]Lee C T,Cheng C T,L iao C W,et al.S ite classification of Tai-wan free-field strong-motion stations[J].BSSA,2001,91(5):1283-1297.
[16]Ahm ed E lgamal,L iang C H.Vertical Earthquake G round MotionRecords:An Overview[J].Journal of Earthquake Engineering,2004,8(5):663-697.
[17]胡聿贤.地震工程学[M].北京:地震出版社,1988.
[18]GB 50011-2001,建筑抗震设计规范[S].
[19]倪永军,朱唏.近断层地震的加速度峰值比和反应谱分析[J].北方交通大学学报,2004,28(4):1-5.
[20]石树中,沈建文,楼梦麟.基岩场地强地面运动加速度反应谱统计特征[J].同济大学学报,2002,30(11):1300-1304.
[21]周正华,周雍年,赵刚.强震近场加速度峰值比和反应谱统计分析[J].地震工程与工程振动,2002,22(3):15-18.
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