利用修正谱烈度确定我国西部地区仪器烈度的建议方法
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摘要
基于近年来在我国西部破坏性地震中获得的加速度记录及其对应的烈度资料,利用假设检验方法,统计了多个强地震动参数与烈度间的对应关系,分析结果表明谱烈度(阻尼比20%)与震害烈度间对应关系最好.为降低误差,本文根据加速度反应谱卓越周期和场地条件的差异对谱烈度进行了修正.采用修正谱烈度确定的台站仪器烈度,与震害烈度完全一致的比例接近70%,说明利用修正谱烈度确定仪器烈度具有较高的可靠性,故建议采用本文提出的修正谱烈度作为我国西部地区的仪器烈度评定标准.
Acceleration records and their corresponding intensity materials of recent destructive earthquakes in West China were collected in this article.The relativity between various strong ground motion indices and intensity was compared with a method based on hypothesis testing,which indicated that spectral intensity with 20% damping ratio(SI0.2) was the index that most significantly related to intensity.As an improvement,SI0.2 was modified depending on the predominant period of spectral acceleration and the site condition of the station.The instrumental intensity determined by modified SI0.2 was identical with the actual intensity for 70 percents of the stations,which indicated that modified SI0.2 was efficient and reliable in instrumental intensity determination.So modified SI0.2 defined in this article was proposed to determine the instrumental intensity for destructive earthquakes in West China.
Acceleration records and their corresponding intensity materials of recent destructive earthquakes in West China were collected in this article.The relativity between various strong ground motion indices and intensity was compared with a method based on hypothesis testing,which indicated that spectral intensity with 20% damping ratio(SI0.2) was the index that most significantly related to intensity.As an improvement,SI0.2 was modified depending on the predominant period of spectral acceleration and the site condition of the station.The instrumental intensity determined by modified SI0.2 was identical with the actual intensity for 70 percents of the stations,which indicated that modified SI0.2 was efficient and reliable in instrumental intensity determination.So modified SI0.2 defined in this article was proposed to determine the instrumental intensity for destructive earthquakes in West China.
引文
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[20]薄景山,李秀领,刘德东,等.土层结构对反应谱特征周期的影响[J].地震工程与工程振动,2003,23(5):42-45Bo Jingshan,Li Xiuling,Liu Dedong,et al.Effects of Soil Layer Construction on Characteristic Periods of Response Spectra[J].Earthquake Engineering and Engineering Vibration,2003,23(5):42-45
[21]袁一凡.四川汶川8.0级地震损失评估[J].地震工程与工程振动,2008,28(5):10-19Yuan Yifan.Loss Assessment of Wenchuan Earthquake[J].Earthquake Engineering and Engineering Vibration,2008,28(5):10-19
[2]David J Wald,Bruce C Worden,Vincent Quitoriano,et al.Shake map manual[DB],down load from http://pubs.usgs.gov/tm/2005/12A01/,2006
[3]Wu Y M,Teng T L,Hsiao N C,et al.Progress on earthquake rapid reporting and early warning systems in Taiwan.Earthquake hazard,risk,and strong ground motion[M].Beijing:Seismological Press,2004:351-360
[4]Wu Yihmin,Shin Tzaychyn,Chang Chienhsin.Near real-time mapping of peak ground acceleration and peak ground velocity following a strong earthquake[J].Bulletin of the Seismological Society of America.2001,91(5):1218-1228
[5]Wu Yihmin,Shin Tzaychyn,Chen Chenchun,et al.Taiwan rapid earthquake information release system[J].Seismological Research Letter,1997,68(6):931-943
[6]Kazi R Karim,Fumio Yamazaki.Correlation of JMA instrumental seismic intensity with strong motion parameters[J].Earthquake Engineering and Structural Dynamics,2002,31:1191-1212
[7]Khosrow T.Shabestari,Fumio Yamazaki.A proposal of instrumental seismic intensity scale compatible with MMI evaluated from three-component acceleration records[J].Earthquake Spectra,2001,17(4):711-723
[8]Yasuko Kuwata,Shiro Takada.Instantaneous instrumental seismic intensity and evacuation[J].Journal of NaturalDisaster Science,2002,24(1):35-42
[9]Erdik M,Fahjan Y,Ozel O,et al.Istanbul earthquake rapid response and the early warning system[J].Bulletin of Earthquake Engineering,2003,1(1):303-312
[10]Mustafa Erdik.Urban earthquake rapid response and early warning systems[R].First European Conference on Earthquake Engineering and Seismology,2006
[11]Wu Yihmin,Teng Taliang,Shin Tzaychyn,et al.Relationship between peak ground acceleration,peak ground velocity,and intensity in Taiwan[J].Bulletin of the Seismological Society of America,2003,93(1):386-396
[12]袁一凡.由地震动三要素确定地震动强度(烈度)的研究[M].哈尔滨:国家地震局工程力学研究所,1998:1-23Yuan Yifan,Research on Seismic Intensity Determination by Three Elements of Strong Ground Motion[M].Harbin,China:Institute of Engineering Mechanics,China Earthquake Administration,1998:1-23
[13]朱建钢,黎大虎,赖敏,等.强震记录与地震烈度的仪器测定实例[J].四川地震,2006,6:28-47Zhu Jiangang,Li Dahu,Lai Min,et al.Recordings of Strong Motion Accelerograph and the Seismic Intensity Testing Example[J],Earthquake Research in Sichuan.2006,6:28-47
[14]李小军,周正华,于海英,等.汶川8.0级地震强震动观测及记录初步分析,汶川地震建筑震害调查与灾后重建分析报吿［M].北京:中国建筑工业出版社,2008Li Xiaojun,Zhou Zhenghua,Yu Haiying,et al.Strong Motion Observation and Primary Analysis of Records from Wenchuan8.0Earthquake,Analysis Report on building damage investigation and post-disaster reconstruction of Wenchuan Earthquake[M].Beijing:China Architecture&Building Press,2008
[15]王玉石,周正华,王伟.基于假设检验的地震动强度(烈度)速报方法[J].地震工程与工程振动.2008,28(5):49-54Wang Yushi,Zhou Zhenghua,Wang Wei.A Hypothesis Testing Based Method for Seismic Intensity Rapid Assessment by Strong Ground Motion Parameters[J].Earthquake Engineering and Engineering Vibration,2008,28(5):49-54
[16]David J Wald,Vincent Quitoriano,Thomas H Heaton,et al.Relationships between peak ground acceleration,peak ground velocity,and modified mercalli intensity in Califorornia[J].Earthquake Spectra,1999,15(3):557-564
[17]Li Xiaojun,Zhou Zhenghua,Yu Haiying,et al.Strong motion observation and recording from the great Wenchuan Earthquake[J].Earthquake Engineering and Engineering Vibration,2008,7:235-246
[18]Housner G W.Spectrum intensity of strong-motion earthquakes[C].in proceedings symposium on earthquakes and blast effects on structures,1952:20-36
[19]董娣,周锡元,徐国栋,等.集集地震中场地条件对地震动特性的影响[J].地震地质,2006,28(1):22-36Dong Di,Zhou Xiyuan,XU Guodong,et al.Some Analysis on Effects of Site Classification on Ground Motion Characteristics in Chi-Chi,Taiwan Earthquake[J].Seismology and Geology,2006,28(1):22-36
[20]薄景山,李秀领,刘德东,等.土层结构对反应谱特征周期的影响[J].地震工程与工程振动,2003,23(5):42-45Bo Jingshan,Li Xiuling,Liu Dedong,et al.Effects of Soil Layer Construction on Characteristic Periods of Response Spectra[J].Earthquake Engineering and Engineering Vibration,2003,23(5):42-45
[21]袁一凡.四川汶川8.0级地震损失评估[J].地震工程与工程振动,2008,28(5):10-19Yuan Yifan.Loss Assessment of Wenchuan Earthquake[J].Earthquake Engineering and Engineering Vibration,2008,28(5):10-19
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