Aseismic performance and post-earthquake replacement of prefabricated K-type eccentrically frame braced steel frame
YE Chongyang1, WANG Xinwu2, SHI Qiang2,3, SUN Haisu2
1.School of Civil Engineering, Henan University of Science & Technology, Luoyang 471023, China;
2.Henan International Joint Laboratory of New Civil Engineering Structure, Luoyang Institute of Science and Technology, Luoyang 471023, China;
3.School of Science, Wuhan University of Science and Technology, Wuhan 430070, China
Abstract：In order to study the influence of energy dissipation beam connection structure and post-earthquake replacement on the seismic performance of prefabricated eccentrically braced steel frames, quasi-static cyclic loading tests were carried out on five prefabricated eccentrically braced steel frames. The results show that the connection structure of the energy dissipation beam section has a great influence on the seismic performance of the prefabricated eccentrically braced steel frame. When the end-plate of the energy dissipation beam section is connected with the flush end-plate, with the increase of the thickness of the end-plate of the energy dissipation beam section, the bearing capacity, ductility and energy dissipation capacity of the structure show a upward trend. When the energy-dissipation beam is connected by an extended end-plate, the bearing capacity and energy dissipation capacity of the structure have greatly improved. It is found that the seismic performance index of the replaced frame does not decrease significantly compared with the original frame after the earthquake, indicating that both structures have good replaceability, but the frame with extended end-plate connection for the energy dissipation beam has better replaceability.
Key words: prefabricated; eccentrically braced frame; seismic performance; pseudo-static test; replaceable
叶重阳1，王新武2，时强2,3，孙海粟2. 装配式K型偏心支撑钢框架抗震性能与震后替换[J]. 振动与冲击, 2022, 41(15): 224-232.
YE Chongyang1, WANG Xinwu2, SHI Qiang2,3, SUN Haisu2. Aseismic performance and post-earthquake replacement of prefabricated K-type eccentrically frame braced steel frame. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(15): 224-232.
[1] SINA K A, CEM T. A review of research on steel eccentrically braced frames[J].Journal of Constructional Steel Research,2017,128:53–73
[2] LEILA H N, MOHSEN T. Equation for achieving efficient length of link-beams in eccentrically braced frames and its reliability validation [J]. Journal of Constructional Steel Research:2017,130:53-64
[3] Kuylmaz A , Topkaya C . Design overstrength of steel eccentrically braced frames[J]. International Journal of Steel Structures, 2013, 13(3):529-545.
[4] Keith D. Hjelmstad,Egor P. Popov. Characteristics of Eccentrically Braced Frames[J]. Journal of Structural Engineering,1984,110(2).
[5] Roeder C W , Popov E P . Eccentrically Braced Steel Frames for Earthquakes[J]. Journal of the Structural Division, 1978, 104(3):391-412.
[6] Keith D. Hjelmstad,Egor P. Popov. Cyclic Behavior and Design of Link Beams[J]. Journal of Structural Engineering,1983,109(10).
[7] 田小红,苏明周,李慎,宋丹.高强钢组合K形偏心支撑钢框架抗震性能研究[J].振动与冲击,2020,39(12):95-102.
TIAN Xiaohong , SU Mingzhou ,LI Shen , SONG Dan. Analysis of seismic performance of high strength steel composite K-eccentrically braced frames[J]. Journal of Vibration and Shock, 2020,39(12):95-102.
[8] 段留省,苏明周,郝麒麟,焦培培.高强钢组合K形偏心支撑钢框架抗震性能试验研究[J].建筑结构学报,2014,35(07):18-25.
DUAN Liusheng ,SU Mingzhou ,HAO Qilin JIAO Peipei. Experimental study on seismic behavior of high strength steel composite K-type eccentrically braced frames[J] Journal of Building Structures 2014,35(07):18-25.
[9] 时强,晏石林,王新武,李春霞.装配式偏心支撑钢框架拟静力试验研究[J].湖南大学学报(自然科学版),2020,47(09):48-56.
SHI Qiang，YAN Shilin，WANG Xinwu LI Chunxia. Experimental Investigation on Pseudo-static Test of Prefabricated Eccentrically Braced Steel Frame[J] Journal of Hunan University(Natural Sciences).2020,47(09):48-56.
[10] 时强,王新武,晏石林,孙海粟.平齐端板连接偏心支撑钢框架抗震试验研究[J].华中科技大学学报(自然科学版),2020,48(06):107-112.
Experimental study on seismic behavior of eccentrically braced steel frame with flush end plate connection [J]Journal of Huazhong University of Science and Technology(Natural Science Edition), 2020,48(06):107-112.
[11] 中华人民共和国住房和城乡建设部.建筑抗震设计规范GB50011-2010[S]．北京：中国建筑工业出版社，2010
Ministry of Housing and Urban-Rural Development of the People's Republic of China. Code for Seismic Design of Buildings;GB50011-2010[S]. Beijing: China Architecture& Building Press, 2010
[12] 中华人民共和国住房和城乡建设部.钢结构设计标准GB 50017-2017 [S]. 北京：中国建筑工业出版社，2017.
Ministry of Housing and Urban-Rural Development of the People's Republic of China. Standard for Design of Steel Structures;GB50011-2010[S]. Beijing: China Architecture& Building Press, 2010
[13] 中华人民共和国住房和城乡建设部.建筑抗震试验规程JGJ/T101-2015 [S]．北京：中国建筑工业出版社，2015
Ministry of Housing and Urban-Rural Development of the People's Republic of China. Specification for seismic test of buildings.JGJ/T101-2015 [S]．Beijing: China Architecture& Building Press, 2015
[14] 姚谦峰. 土木工程结构试验 ［M］.2 版. 北京： 中国建筑工业出版社， 2010： 158—172
YAO Qianfeng. Structure Test of Civil Engineering［M］Beijing: China Architecture& Building Press, 2010:158—172
[15] AISC. Seismic Provisions for Structural Steel Buildings [S]. Chicago：American Institute of Steel Construction, 2016
