(1 四川省建筑设计研究院有限公司, 成都 610095; 2 四川省建筑设计研究院有限公司复杂结构设计研究中心, 成都 610095; 3 四川省川建勘察设计院有限公司, 成都 610095;4 西南交通大学土木工程学院, 成都 610031)

摘要: 四川省甘孜州泸定县发生 6. 8 级地震后,对震中磨西镇及附近的房屋建筑震害情况进行多次考察. 根据考察结果分析,现行规范关于场地地震作用放大系数的规定较为简单,建议应进行进一步细致研究;较多建筑底层发生严重破坏,甚至倒塌,建议对底部的刚度和承载力进一步提高;合理设计与施工的砌体结构在地震中表现良好;钢筋混凝土结构施工缝易发生滑移破坏,从而加重整体结构的破坏,建议对应整体结构性能目标进行施工缝验算;填充墙、装饰构件、吊顶和机电设备等非结构构件震害较多,建议从设计、施工和验收全过程控制,保证非结构构件的抗震性能.

关键词: 泸定 6. 8 级地震; 现场震害; 地震作用放大系数; 结构刚度; 砌体结构抗震; 施工缝; 非结构构件抗震

中图分类号:TU318+. 2 文献标志码:A 文章编号:1002-848X(2023)07-0001-08

DOI:10. 19701 / j. jzjg. SADI2301

Investigation and consideration of building damage in the epicenter of Sichuan Luding M6. 8 earthquake

ZHAO Shixing1,2, YANG Shuheng1,2, TANG Yuanxu1, GUO Jia3,ZHU Fei3, ZHOU Qiaoling1, YAO Yu4, Huang Xiangchun3

(1 Sichuan Provincial Architectural Design and Research Institute Co. , Ltd. , Chengdu 610095, China; 2 ComplexStructure Design and Research Center, Sichuan Provincial Architectural Design and Research Institute Co. , Ltd. ,Chengdu 610095, China; 3 Sichuan Chuanjian Geotechnical Survey Design Institute Co. , Ltd. , Chengdu 610095,China; 4 School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China)

Abstract: After the 6. 8 magnitude earthquake occurred in Luding County, Ganzi Prefecture, Sichuan Province, the damage of buildings in and around Moxi Town in the epicenter was investigated. According to the analysis of theinvestigation results, the provisions of the current code on the amplification coefficient of site seismic action are relativelysimple, and it is suggested that further detailed research should be carried out. The first floor of buildings is seriouslydamaged or even collapsed, it is recommended to further improve the stiffness and bearing capacity of the bottom. Thereasonably designed and constructed masonry structure performs well in earthquake. The construction joints of reinforcedconcrete structures are prone to slip failure, which aggravates the damage of the overall structure. It is recommended tocheck the construction joint corresponding to the overall structure performance target. Non structural components, such asinfilled walls, decorative components, suspended ceilings and electromechanical equipments are subject to more seismicdamage. It is recommended to control the whole process of design, construction and acceptance to ensure the seismicperformance of non structural components

Keywords:Sichuan Luding M6. 8 earthquake; earthquake damage; amplification coefficient of seismic action; structuralstiffness; seismic of masonry structure; construction joint; seismic of non structural component

第一作者:赵仕兴,硕士,教授级高级工程师,一级注册结构工程师,英国注册结构工程师,主要从事高层建筑结构、复杂结构的设计与研究,Email: 316458931@ qq. com;

[引用本文] 赵仕兴,杨姝姮,唐元旭,等. 四川泸定 6. 8 级地震震中区域建筑震害考察与思考[ J]. 建筑结构,2023,53( 7): 1-8. ZHAO Shixing, YANG Shuheng, TANG Yuanxu, et al. Investigation and consideration of buildingdamage in the epicenter of Sichuan Luding M6. 8 earthquake [J]. Building Structure,2023,53(7):1-8.