摘要
为了研究耗能段采用端板连接的Y形偏心支撑钢框架的抗震性能,设计了2个耗能段连接形式和2组结构高跨比不同的试件。采用有限元分析软件ABAQUS对试件进行滞回分析,研究耗能段连接形式和结构高跨比对试件滞回性能的影响,将试件的正向骨架曲线简化为三折线模型,确定使结构快速恢复功能而替换耗能段的结构层间侧移角的合理范围。研究结果表明:设计合理的端板连接耗能段的Y形偏心支撑钢框架的滞回性能与焊接连接耗能段的Y形偏心支撑钢框架基本相同;基于等能量原理的三折线模型适用于确定耗能段的替换范围;Y形偏心支撑框架的最大层间位移角介于1/350至1/80之间时可替换耗能梁段。
In order to research the seismic performance of Y-shaped eccentrically braced frames with end-plate links,two specimens with different connection configurations of links and two series of specimens with different high-span ratios of structure are designed.Finite element analysis software ABAQUS is used to analyze the hysteretic behavior of specimens and compare the hysteretic behaviors of specimens with different connection configurations of links and different high-span ratios of structure.The positive skeleton curves are simplified to the trilinear model,and then the reasonable range of story drift ratio replacing links for recovering structure capacity quickly is determined.The research results show theat the appropriately designed Y-shaped eccentrically braced frame with end-plate links has the same hysteretic behavior as the welding's.The trilinear model based on the principle of equal energy is suitable for determining the range of replacing links.Links can be replaced when the most story drift ratio is between 1/350 to 1/80.
作者
唐成杰
赵宝成
Tang Cheng-jie;Zhao Bao-cheng(Suzhou University of Science and Technology,Jiangsu Key Laboratory of Structure Engineering,Suzhou 215011,China)
出处
《工程抗震与加固改造》
北大核心
2016年第4期64-71,共8页
Earthquake Resistant Engineering and Retrofitting
基金
江苏省普通高校学术学位研究生科研创新计划项目(KYLX_1286)
关键词
耗能段
Y形偏心支撑框架
端板连接
可替换
link
Y-shaped eccentrically braced frame
end-plate connection
replaceable
