| 青海玛多7.4级地震极震区震灾调查及分析 |
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| 引用本文： | 李鑫,姚生海,殷翔,绽蓓蕾,盖海龙,李延峰.青海玛多7.4级地震极震区震灾调查及分析[J].震灾防御技术,2021,16(3):429-436. |
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| 作者姓名： | 李鑫 姚生海 殷翔 绽蓓蕾 盖海龙 李延峰 |
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| 作者单位： | 1.青海省地震局，西宁 810001 |
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| 摘 要： | 2021年5月22日2时4分，青海省玛多县发生7.4级地震，距震中26 km的野马滩大桥及周边区域为此次地震极震区（地震烈度Ⅹ度，面积约69 km2），受损尤为严重。桥梁表现为落梁式破坏，房屋不同程度受损。对极震区内野马滩大桥及周边房屋进行实地调查与震灾分析，并提出灾后重建及震灾防御相关建议，包括组织专业人员进行灾区房屋安全鉴定，建议牧民居住建筑采用轻钢式结构，建议原地重建野马滩大桥并增加限位装置及连梁装置。
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| 关 键 词： | 玛多地震 极震区 野马滩大桥 震灾分析 |
| 收稿时间： | 2021-06-07 |
Investigation and Analysis of Earthquake Disaster in the Extreme Earthquake Area of MS7.4 Earthquake in Qinghai Province |
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| Li Xin,Yao Shenghai,Yin Xiang,Zhan Beilei,Gai Hailong,Li Yanfeng.Investigation and Analysis of Earthquake Disaster in the Extreme Earthquake Area of MS7.4 Earthquake in Qinghai Province[J].Technology for Earthquake Disaster Prevention,2021,16(3):429-436. |
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| Authors: | Li Xin Yao Shenghai Yin Xiang Zhan Beilei Gai Hailong Li Yanfeng |
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| Institution: | 1.Earthquake Administration of Qinghai Province, Xining 810001, China2.Field Scientific Observation Station for Geodynamics of the Interior of the Qinghai-Tibet Plateau, Golmud 816000, Qinghai, China |
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| Abstract: | At 02:04 on May 22, 2021, a magnitude 7.4 earthquake occurred in Maduo County, Qinghai Province. The Yematan Bridgeand its surroundings, 26 km away from the epicenter, are the extreme disaster area (the area of earthquake intensity 10 is about 69 km2). The damage type of this bridge was the falling-beam damage, and the local residential buildings were damaged to different levels. The field investigations and earthquake disaster analysis were carried out on the Yematan Bridge and surrounding houses in the extreme disaster zone, and relevant suggestion on post-earthquake reconstruction and earthquake disaster prevention were put forward: Conduct detailed house safety appraisal for the professional personnel of housing construction organization in disaster area; For grazing residential areas, it is suggested to use light steel structure houses; For the Yematan Bridge, it is recommended to rebuild in situ, and increase additional limiting and connecting beam device. |
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| Keywords: | Maduo earthquake Extreme disaster area Yematan bridge Earthquake disaster analysis |
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