震后城市地震动场快速评估方法——以福州盆地为例
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摘要
震后灾情的快速获取是灾后应急的基础,传统的方法是根据现场调查结果决定应急方案。受灾程度的分布常以烈度分布图描述,而烈度又与加速度峰值密切相关。本文提出了一种震后地震动场分布快速评估的方法。该方法将主要依据灾区基岩台站的实时强震记录(无强震记录也行)和该地区的加速度衰减关系,再结合该地区各类场地的地震动放大因子,则可快速估计该地区地震动场分布,从而确定灾情,为政府的应急决策提供依据。
To assess the earthquake disaster quickly is the foundation of post-disaster emergency.The traditional method for deciding emergency plan is according to the survey results.The distribution of affected degree is often described with intensity distribution map,and the intensity is closely related with the peak acceleration.This paper puts forward a method for rapid assessment of ground motion field distribution.This method will be mainly based on the real-time records and the attenuation relationship of acceleration of bedrock station in earthquake disaster area(including no real-time records on the strong earthquakes).At the same time,it is also based on the earthquake amplification factor of the area of various kinds of field.Finally,we can rapidly estimate the earthquake distribution and the disaster of this area which can be a basis for the government's emergency decision.
To assess the earthquake disaster quickly is the foundation of post-disaster emergency.The traditional method for deciding emergency plan is according to the survey results.The distribution of affected degree is often described with intensity distribution map,and the intensity is closely related with the peak acceleration.This paper puts forward a method for rapid assessment of ground motion field distribution.This method will be mainly based on the real-time records and the attenuation relationship of acceleration of bedrock station in earthquake disaster area(including no real-time records on the strong earthquakes).At the same time,it is also based on the earthquake amplification factor of the area of various kinds of field.Finally,we can rapidly estimate the earthquake distribution and the disaster of this area which can be a basis for the government's emergency decision.
引文
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[2]Wu Y M,Shin T C,Chang C H.Near real-time mapping of peak ground acceleration and peak ground velocity fellowing a strong earthquake[J].Bulletin of the Seismological Society of America,2001,91(5):1218-1228.
[3]Wu Y M,Kanamori H.Rapid assessment of damage potential of earthquakes in Taiwan from the beginning of P waves[J].Bulletin of the Seismo-logical Society of America,2005,95(3):1181-1185.
[4]David J W,Paul S E,Lin K W,et al.Challenges in rapid ground motion estimation for the prompt assessment of global urban earthquakes[J].Bull.Earthq.Res.Inst.Univ.Tokyo,2006,81:273-281.
[5]David J W,Quitoriano V,Thomas H H,et al.TriNet“ShakeMaps”:rapid generation of peak ground motion and intensity maps for earthquake inSouthern California[J].Earthquake Spectra,1999,15(3):537-555.
[6]Kanamori H.Location earthquake with amplitude application to real-time seismology[J].Bulletin of the Seismological Society of America,1993,83(1):264-268.
[7]Lind S G,Douglas S N,Douglas S D,et al.Real-time seismology at UC Berkeley:the rapid ear-thquake data integration project[J].Bulletin ofthe Seismological Society of America,1996,86(4):936-945.
[8]Kanamori H,Maechling P,Hauksson E.Continuous monitoring of ground-motion parameters[J].Bulletin of the Seismological Society of Ameri-ca,1999,89(1):311-316.
[9]Yamazaki F,Noda S,Meguro K.Developments of monitoring and early damage assessment system in Japan[J].Bull.ERS,1997,30:45-48.
[10]WANG Dong,XIE Lili.Attenuation of peak ground accelerations from the great Wenchuan earthquake[J].Earthquake Engineering and Engineer-ing Vibration,2009,8(2):179-188.
[11]David J W,Bruce C W,Quitoriano V,et al.ShakeMap manual[M].2006.
[12]王玉石.地震动强度及其特征分析[D].哈尔滨:中国地震局工程力学研究所,2010.
[13]李山有,金星,陈先,等.地震动强度与地震烈度速报研究[J].地震工程与工程振动,2002,22(6):1-7.LI Shanyou,JIN Xing,CHEN Xian,et al.Rapid reporting of peak strong motion and seismic intensity[J].Journal of Earthquake Engineering andEngineering Vibration,2002,22(6):1-7.(in Chinese)
[14]胡聿贤.地震工程学[M].2版.北京:地震出版社,2006.
[15]金星,康兰池,欧益萍.福建地区中小地震地震动峰值衰减规律研究[J].地震学报,2008,30(3):279-291.JIN Xing,KANG Lanchi,OU Yiping.A study on ground motion attenuation relation for small to moderate earthquakes in Fujian region[J].ActaSeismological Sinica,2008.30(3):279-291.
[16]丁海平,刘中良,李燕杰.台湾地震对福建地区基岩地震动的影响[J].地震工程与工程振动,2011,31(4):26-32.DING Haiping,LIU Zhongliang,LI Yanjie.The effect of Taiwan earthquake on bedrock ground motion of Fujian region[J].Journal of EarthquakeEngineering and Engineering Vibration,2011,31(4):26-32.(in Chinese)
[17]卢寿德,等.《工程场地地震安全性评价(GB17741-2005)》宣贯教材[M].北京:中国标准出版社,2006.
[18]李燕杰,丁海平,杨朝辉.一种城市地震动参数区划方法[J].世界地震工程,2011,27(3):60-65.LI Yanjie,DING Haiping,YANG Zhaohui.A method for urban seismic ground motion zonation[J].World Earthquake Engineering,2011,27(3):60-65.(in Chinese)
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