兰州理工大学学报

兰州理工大学学报 ›› 2020, Vol. 46 ›› Issue (3): 133-138.

• 建筑科学 • 上一篇    下一篇

带可替换耗能连接偏心支撑钢框架单调加载的受力性能分析

殷占忠1,2, 安树桢1, 孙向阳1, 李锦铭1, 张宪栋1   

  1. 1.兰州理工大学 土木工程学院, 甘肃 兰州 730050;
    2.兰州理工大学 西部土木工程防灾减灾教育部工程研究中心, 甘肃 兰州 730050
  • 收稿日期:2019-02-23 出版日期:2020-06-28 发布日期:2020-08-19
  • 作者简介:殷占忠(1979-),男,甘肃陇西人,博士,教授,博导.
  • 基金资助:
    国家自然科学基金(51968044,51568040),国家重点研发计划(2019YFD1101003)

Mechanical performance analysis of monotonic loading of eccentrically braced steel frame with replaceable energy dissipation link

YIN Zhan-zhong1,2, AN Shu-zhen1, SUN Xiang-yang1, LI Jin-ming1, ZHANG Xian-dong1   

  1. 1. College of Civil Engineering, Lanzhou Univ. of Tech., Lanzhou 730050, China;
    2. Western Engineering Research Center of Disaster Mitigation in Civil Engineering, The Ministry of Education, Lanzhou Univ. of Tech., Lanzhou 730050, China
  • Received:2019-02-23 Online:2020-06-28 Published:2020-08-19

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摘要： 带可替换耗能连接的偏心支撑钢框架的框架梁由耗能连接和框架梁两部分构成,耗能连接具有震后替换方便、造价低等特点.采用Abaqus软件对10榀带可替换耗能连接的偏心支撑钢框架进行数值模拟.模拟中对该偏心支撑钢框架施加单调荷载,分析不同参数下可替换耗能连接及整个框架的承载能力、变形能力等力学性能.分析结果表明:带可替换耗能连接的偏心支撑钢框架能够很好地将结构的塑性变形集中在此耗能连接上,因此带有这种耗能连接的偏心支撑钢框架具有较高的承载力、延性、初始刚度,并且应力和应变分布较均匀.

关键词: 可替换耗能连接, 偏心支撑, 有限元分析, 受力性能

Abstract: An eccentrically braced steel frame with replaceable energy dissipation link is consisted of two parts, i.e. the part of energy dissipation link and that of frame beam. The energy dissipation link has advantages of convenient replacement after earthquake as well as low cost. By utilizing software ABAQUS along with different appropriate parameters, ten models with replaceable energy dissipation link of eccentrically braced steel frames were build up for the case of monotonic loading to carry out numerical simulation, trying to predict, for the replaceable energy dissipation link and the whole braced steel frame, the capacity to bear longing, deformation extent and other mechanical properties. All results coming out of our analyses indicate that the eccentrically braced steel frame with replaceable energy dissipation link may concentrate plastic deformation of the structure on the energy dissipation link. Therefore, the eccentrically braced steel frame with this kind of energy dissipation link exhibits better ductility, higher initial stiffness and bigger capacity to bear loading. Consequently, the distribution of both stress and strain becomes more uniform in the frame beam structure.

Key words: replaceable energy dissipation link, eccentrically braced steel frame, finite element analysis, mechanical property

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