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九寨沟7.0级地震松潘至九寨沟震害特征及分析
鄢兆伦,彭小波,李曙光,洪海春
作者单位
鄢兆伦 江苏省地震局, 南京市卫岗3号 210014 
彭小波 江苏省地震局, 南京市卫岗3号 210014 
李曙光 江苏省地震局, 南京市卫岗3号 210014 
洪海春 江苏省地震局, 南京市卫岗3号 210014 
摘要:
对九寨沟7.0级地震松潘至九寨沟各烈度区的房屋结构特点和震害特征进行了分析。该地区新建建筑(尤其是框架结构)抗震性能良好,砖混、砖木等结构整体性较差,地震中损坏普遍。通过计算分析震害指数后发现,框架结构震害指数远小于土木、砖木结构;在Ⅵ度区框架结构震害指数普遍为0,随烈度增加,框架结构的震害指数快速增加,而增加幅度逐渐减小。此外,探讨了缺乏建筑物的地区以及建筑物结构为单一框架结构地区的烈度评定问题并给出了相关的建议,以期对今后的地震现场工作起到参考借鉴作用。
关键词:  九寨沟7.0级地震  震害特征  地震烈度  震害指数  地震现场调查
DOI:
分类号:P315
基金项目:江苏省科技支撑计划-社会发展(BE2014731)和中国地震局星火计划攻关项目(XH16014)资助
Seismic disaster characteristics and analysis of the Jiuzhaigou MS7.0 earthquake from Songpan to Jiuzhaigou
Yan Zhaolun,Peng Xiaobo,Li Shuguang,Hong Haichun
Abstract:
This paper expounded the features of the buildings and analyzed the seismic disaster characteristics of the Jiuzhaigou MS7.0 earthquake from Songpan to Jiuzhaigou. The new buildings(especially the frame structure)had a good anti-seismic performance in this area. The entirety of the brick-wood structure and the brick-concrete structure were poor, and they were widely damaged in the earthquake. By computing seismic damage index, we found that:the seismic damage index of the frame structure was far less than that of the civil structure and brick-wood structure. The seismic damage index of frame structure was all zero in the Ⅵ area. It was going up rapidly when the intensity increased, but the increasing degree slowed down. Finally, we discussed how to evaluate the intensity in the areas where there were fewer buildings or there was only one structure type, and we offered some advice for future field work reference.
Key words:  Jiuzhaigou MS7.0 earthquake  Seismic characteristic  Earthquake intensity  Damage index  Earthquake investigation