加速度均方根地震动统计研究
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摘要
根据美国加州等地的强震记录,采用回归分析方法研究了加速度记录水平、竖向分量的峰值加速度(PGA)和一定时间窗内加速度均方根(SRSTM S)的衰减规律。所采用的加速度记录共795组(两水平向与一竖向)2 385条。对作为地震危险性分析的主要参数PGA的衰减规律与SRSTM S的衰减规律作了详细的研究,结果表明,SRSTM S的离散性明显的小于PGA,因此建议将SRSTM S的衰减关系应用于地震动强度的危险性分析。
Based on the observed data of strong motion acceleration in California and other states of USA,the attenuation pattern of peak horizontal and vertical acceleration and square root of short time mean squares is studied by regressive analyzing method.795 group(three dimensional) acceleration records are selected to conduct attenuation pattern statistic analysis for PGA and square root of mean short time squares.The attenuation law of the main parameter of PGA in seismic hazard analysis and square root of short time mean squares of acceleration are studied in details in this paper.It is observed that the variance of the square root of short time mean square is less than that of PGA.Thus the square root of short time mean square is suggested to be used for describing the intensity attenuation characteristics in hazard analysis.
Based on the observed data of strong motion acceleration in California and other states of USA,the attenuation pattern of peak horizontal and vertical acceleration and square root of short time mean squares is studied by regressive analyzing method.795 group(three dimensional) acceleration records are selected to conduct attenuation pattern statistic analysis for PGA and square root of mean short time squares.The attenuation law of the main parameter of PGA in seismic hazard analysis and square root of short time mean squares of acceleration are studied in details in this paper.It is observed that the variance of the square root of short time mean square is less than that of PGA.Thus the square root of short time mean square is suggested to be used for describing the intensity attenuation characteristics in hazard analysis.
引文
[1]胡聿贤.地震工程学[M].北京:地震出版社,1988.152-157Hu Y X.T he E arthquake Eng ineering[M].B e ijing:E arthquake P ress,1988.152-157
[2]H anks,T.C,K anam ori,H.(金森博雄).A m om en tm agn itude sca le[J].J.G.R.,1979,84(5):2348-2350
[3]崔江余,杨伟毅.地震动参数衰减规律的研究[J].世界地震工程,2002,18(3):116-122Cu i J Y,Y ang W Y.A study on the attenuation lawof ground m otion param eters[J].W orld E arthquakeEng ineering,2002,18(3):116-122
[4]邵广彪,冯启民.近断层地震动加速度峰值规律的研究[J].地震工程与工程振动,2004,24(3):30-37Shao G B,F eng Q M.R esearch on attenuation ofnear-fau lt peak strong ground m otion acce leration[J].E arthquake Eng ineering and Eng ineering V ibration,2004,24(3):30-37
[5]刘本玉,苏经宇,江见鲸.三维地震动参数衰减规律的人工神经网络分析[J].土木工程学报,2003,36(5):1-4L iu B Y,Su J Y,Jiang J J.A n for attenuation ru le of3D se ism ic parm eters[J].Ch ina C iv il Eng ineeringJourna l,2003,36(5):1-4
[6]李英民,丁文龙,黄宗明.地震动幅值特性参数的工程适用性研究[J].重庆建筑大学学报,2001,23(6):16-21L i Y M,D ing W L,Huang Z M.S tudy on the su it-ab ility of am p litude defin itions of strong ground m o-tions for eng ineering purpose[J].Journa l ofChongq ing Jianzhu U n ivers ity,2001,23(6):16-21
[7]高玉峰,谢康和,曾国熙.中强地震区地震烈度和峰值加速度的衰减规律[J].浙江大学学报,2000,34(4):404-408G ao Y F,X ie K H,Zeng G X.T he se ism ic attenuationregu larities in the m oderate-strong earthquake area[J].Journa l of Zhe jiang U n ivers ity,2000,34(4):404-408
[8]王国权,周锡元,马宗晋,等.921台湾地震近断层强地面运动的周期和幅值特性[J].工程抗震,2001,(1):30-36W ang G Q,Zhou X Y,M a Z J,et a l.T he characteris-tics of periods and am p litudes of the near fau lt strongground m otion by Septem ber 21,1999 T a iw an earth-quake[J].E arthquake R es itan t Eng ineering,2001,(1):30-36
[9]霍俊荣.近场地面运动衰减规律的研究[D].哈尔滨:国家地震局工程力学研究所,1989Huo J R.S tud ies on attenuation ru le of the near fau ltstrong ground m otion[D].H arb in:Institu te of Eng i-neering M echan ics,Ch ina E arthquake A dm in istration.1989
[10]霍俊荣,胡聿贤.地震动峰值参数衰减规律的研究[J].地震工程与工程振动,1992,12(2):1-11Huo J R,Hu Y X.S tudy on attenuation law s of groundm otion param eters[J].E arthquake Eng ineering andEng ineering V ibration,1992,12(2):1-11
[11]胡聿贤.地震安全性评价技术教程[M].北京:地震出版社,1999.283-302Hu Y X.T echno logy T u toria l of Se ism ic Safety Eva lu-ation[M].B e ijing:E arthquake P ress,1999.283-302
[12]W ang G Q,Zhou X Y,Zhang P,et a l.Characteris-tics of am p litude and duration for near fau lt strongground m otion from the 1999 Ch i-Ch i,T a iw an earth-quake[J].So il D ynam ics and E arthquake Eng ineering,2002,22(1):73-96
[2]H anks,T.C,K anam ori,H.(金森博雄).A m om en tm agn itude sca le[J].J.G.R.,1979,84(5):2348-2350
[3]崔江余,杨伟毅.地震动参数衰减规律的研究[J].世界地震工程,2002,18(3):116-122Cu i J Y,Y ang W Y.A study on the attenuation lawof ground m otion param eters[J].W orld E arthquakeEng ineering,2002,18(3):116-122
[4]邵广彪,冯启民.近断层地震动加速度峰值规律的研究[J].地震工程与工程振动,2004,24(3):30-37Shao G B,F eng Q M.R esearch on attenuation ofnear-fau lt peak strong ground m otion acce leration[J].E arthquake Eng ineering and Eng ineering V ibration,2004,24(3):30-37
[5]刘本玉,苏经宇,江见鲸.三维地震动参数衰减规律的人工神经网络分析[J].土木工程学报,2003,36(5):1-4L iu B Y,Su J Y,Jiang J J.A n for attenuation ru le of3D se ism ic parm eters[J].Ch ina C iv il Eng ineeringJourna l,2003,36(5):1-4
[6]李英民,丁文龙,黄宗明.地震动幅值特性参数的工程适用性研究[J].重庆建筑大学学报,2001,23(6):16-21L i Y M,D ing W L,Huang Z M.S tudy on the su it-ab ility of am p litude defin itions of strong ground m o-tions for eng ineering purpose[J].Journa l ofChongq ing Jianzhu U n ivers ity,2001,23(6):16-21
[7]高玉峰,谢康和,曾国熙.中强地震区地震烈度和峰值加速度的衰减规律[J].浙江大学学报,2000,34(4):404-408G ao Y F,X ie K H,Zeng G X.T he se ism ic attenuationregu larities in the m oderate-strong earthquake area[J].Journa l of Zhe jiang U n ivers ity,2000,34(4):404-408
[8]王国权,周锡元,马宗晋,等.921台湾地震近断层强地面运动的周期和幅值特性[J].工程抗震,2001,(1):30-36W ang G Q,Zhou X Y,M a Z J,et a l.T he characteris-tics of periods and am p litudes of the near fau lt strongground m otion by Septem ber 21,1999 T a iw an earth-quake[J].E arthquake R es itan t Eng ineering,2001,(1):30-36
[9]霍俊荣.近场地面运动衰减规律的研究[D].哈尔滨:国家地震局工程力学研究所,1989Huo J R.S tud ies on attenuation ru le of the near fau ltstrong ground m otion[D].H arb in:Institu te of Eng i-neering M echan ics,Ch ina E arthquake A dm in istration.1989
[10]霍俊荣,胡聿贤.地震动峰值参数衰减规律的研究[J].地震工程与工程振动,1992,12(2):1-11Huo J R,Hu Y X.S tudy on attenuation law s of groundm otion param eters[J].E arthquake Eng ineering andEng ineering V ibration,1992,12(2):1-11
[11]胡聿贤.地震安全性评价技术教程[M].北京:地震出版社,1999.283-302Hu Y X.T echno logy T u toria l of Se ism ic Safety Eva lu-ation[M].B e ijing:E arthquake P ress,1999.283-302
[12]W ang G Q,Zhou X Y,Zhang P,et a l.Characteris-tics of am p litude and duration for near fau lt strongground m otion from the 1999 Ch i-Ch i,T a iw an earth-quake[J].So il D ynam ics and E arthquake Eng ineering,2002,22(1):73-96
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