鲁甸M_S6.5级地震强震动记录及震害分析
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摘要
2014年8月3日发生的鲁甸地震是我国继2013年芦山地震之后的又一次破坏性浅源地震,造成了严重的人员伤亡和工程结构破坏。本文处理了我国数字强震动台网捕获的60余组主震三分量强震动记录,绘制了震中附近区域的峰值加速度等值线图,长轴沿西北-东南方向展布。通过与中国西部常用衰减关系的对比,发现各模型的预测值均不同程度高估了峰值加速度、峰值速度的观测值。最后以水平向峰值加速度较大的三个典型台站为例,详细调查了附近建筑的破坏情况,结合宏观烈度分布结果,分析了地震动特征与震害的相关性。
The Ludian earthquake on August 3, 2014 is another destructive shallow earthquake following the 2013 Lushan earthquake. The National Strong Motion Observation Network System detected more than 60 groups of recordings during the main shock. After processing of the records, the contour map of PGA was obtained near the epicenter region, indicating the long axis along northwest-southeast. After compared the PGA and PGV of Ludian earthquake with several empirical ground attenuation relationships, we found that the relationships overestimated the ground motion of Ludian earthquake in different degrees except for some near-field stations. Finally, we chose three typical stations with recorded PGA more than 100 gal to study the correlation of ground motion with macro intensity.
The Ludian earthquake on August 3, 2014 is another destructive shallow earthquake following the 2013 Lushan earthquake. The National Strong Motion Observation Network System detected more than 60 groups of recordings during the main shock. After processing of the records, the contour map of PGA was obtained near the epicenter region, indicating the long axis along northwest-southeast. After compared the PGA and PGV of Ludian earthquake with several empirical ground attenuation relationships, we found that the relationships overestimated the ground motion of Ludian earthquake in different degrees except for some near-field stations. Finally, we chose three typical stations with recorded PGA more than 100 gal to study the correlation of ground motion with macro intensity.
引文
霍俊荣,1989.近场强地面运动衰减规律的研究.哈尔滨:中国地震局工程力学研究所所博士学位论文.
冀昆,温瑞智,任叶飞等,2014.芦山地震场地非线性反应特征分析.地震工程与工程振动,34(Sup):333 —338.
雷建成,高孟潭,俞言祥,2007.四川及邻区地震动衰减关系.地震学报,29(5):500—511.任叶飞,温瑞智,周宝峰,2011.强震动记录编目——以汶川余震流动观测记录为例.震灾防御技术,6(4):406 —415.
温瑞智,任叶飞,黄旭涛等,2013a.芦山7.0级地震强震动记录及其震害相关性.地震工程与工程振动,33 (4):1—14.
温瑞智,任叶飞,齐文浩等,2013b.2013年4月20日芦山地震最大加速度记录分析.西南交通大学学报,48 (5):783—791.
俞言祥,汪素云,2006.中国东部和西部地区水平向基岩加速度反应谱衰减关系.震灾防御技术,1(3):206 —217.
俞言祥,李山有,肖亮,2013.为新区划图编制所建立的地震动衰减关系.震灾防御技术,8(1):24—33.
中华人民共和国城乡建设部,2010.建筑抗震设计规范(GB 50011-2010).北京:中国建筑工业出版社.
Boore D.,2001.Effect of baseline corrections on displacements and response spectra for several recordings of the1999 Chi-Chi,Taiwan.Bulletin of the Seismological Society of America,91(5):1199—1211.
冀昆,温瑞智,任叶飞等,2014.芦山地震场地非线性反应特征分析.地震工程与工程振动,34(Sup):333 —338.
雷建成,高孟潭,俞言祥,2007.四川及邻区地震动衰减关系.地震学报,29(5):500—511.任叶飞,温瑞智,周宝峰,2011.强震动记录编目——以汶川余震流动观测记录为例.震灾防御技术,6(4):406 —415.
温瑞智,任叶飞,黄旭涛等,2013a.芦山7.0级地震强震动记录及其震害相关性.地震工程与工程振动,33 (4):1—14.
温瑞智,任叶飞,齐文浩等,2013b.2013年4月20日芦山地震最大加速度记录分析.西南交通大学学报,48 (5):783—791.
俞言祥,汪素云,2006.中国东部和西部地区水平向基岩加速度反应谱衰减关系.震灾防御技术,1(3):206 —217.
俞言祥,李山有,肖亮,2013.为新区划图编制所建立的地震动衰减关系.震灾防御技术,8(1):24—33.
中华人民共和国城乡建设部,2010.建筑抗震设计规范(GB 50011-2010).北京:中国建筑工业出版社.
Boore D.,2001.Effect of baseline corrections on displacements and response spectra for several recordings of the1999 Chi-Chi,Taiwan.Bulletin of the Seismological Society of America,91(5):1199—1211.
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