泸定6.8级地震结构震害调查与分析  

Investigation and Analysis of Structure Damage in the Sichuan Luding M_(S)6.8 Earthquake in 2022

作　　者：罗若帆 金显廷 郭迅[4] 董策 董孝曜 张钦哲 张俊 LUO Ruofan;JIN Xianting;GUO Xun;DONG Ce;DONG Xiaoyao;ZHANG Qinzhe;ZHANG Jun(Key Laboratory of Earthquake Engineering and Engineering Vibration of China Earthquake Administration,Institute of Engineering Mechanics of China Earthquake Administration,Harbin 150080,China;School of Ciwil Engineering,Jiaying University,Meizhou 514015,China;Songyuan Emergency M anagement Bureau,Songyuan 138001,China;Key Laboratory of Building Collapse Mechanism and Disaster Prevention of China Earthquake Administration,Institute of Disaster Prevention,Sanhe 065201,China)

机构地区：[1]中国地震局工程力学研究所中国地震局地震工程与工程振动重点实验室,黑龙江哈尔滨150080 [2]嘉应学院土木工程学院,广东梅州514015 [3]松原市应急管理局,吉林松原138001 [4]防灾科技学院中国地震局建筑物破坏机理与防御重点实验室,河北三河065201

出　　处：《防灾科技学院学报》2022年第4期46-55,共10页Journal of Institute of Disaster Prevention

基　　金：国家自然科学基金项目(52278489);嘉应学院科研项目(2022KJZ01);中国地震局建筑物破坏机理与防御重点实验室开放基金项目(FZ211201)。

摘　　要：2022年9月5日,四川省泸定县发生6.8级地震,对当地建筑造成了严重的损坏。对极震区砌体结构、框架结构、底框架结构以及框架-砌体混杂式结构进行了详细调查,分析了破坏原因。结果表明:缺乏合理约束的砌体结构都发生了不同程度的破坏,圈梁和构造柱完善、刚度均衡的砌体结构基本完好。框架结构中填充墙的破坏较严重,填充墙和框架柱有显著的相互作用。混杂式结构抗侧刚度平面分布严重失衡,破坏严重,墙体平面分布对结构的破坏模式起决定性作用。On Sep.5,2022,a M_(S)6.8 earthquake hit Luding County of Sichuan Province,severely damaging many local buildings.In this paper,we investigated the seismic damage of masonry-concrete structures,frame structures,bottom frame structures and mixed structure of masonry and moment-resisting frame in the meizoseismal region,and analyzed their causes.The results show that the masonry structures lacking reasonable constraints have been damaged to varying degrees,while the masonry structures with ring beams and construction columns and with balanced stiffness are basically undamaged.The infilled wall of the frame structures is seriously damaged,and there is a significant interaction between the infilled wall and the column.The stiffness of mixed structure of masonry and moment-resisting frame is seriously unbalanced and the damage of this kind of structure is serious,so the plane distribution of the wall plays a decisive role in the failure mode of the structure.

关 键 词：泸定地震 震害调查 砌体结构 框架结构 混杂式结构 

分 类 号：P315.9[天文地球—地震学]