摘要
约束屈曲支撑因在受拉和受压时都可屈服而不屈曲,在弱震作用下就可能提早屈服耗能,保护主体结构不受破坏,在强震作用大量吸收能量,提高结构安全度.对双钢管约束屈曲支撑进行改造,在内核中部和端部增设接触环.对该支撑进行有限元数值模拟.结果表明,这种防屈曲支撑具有良好的耗能能力和受力性能,改善了常用防屈曲支撑所出现的连接困难等问题.
The buckling restricting braces （BRBs） might yield but would not buckle whether compressed or tensioned. Thus, BRBs could dissipate in advance the energy of weak earthquake action and protect the structure of main complex from destruction. Meantime, under the action of strong earthquake the BRBs could absorb its energy in large amount, so that the structural salty was improved. The BRBs with double- steel-tube was remodelled with additional contact-ring in the middle of their inner kernel and at their ends. Finite dement numeric simulation was conducted for this kind of BRBs and its result showed that it exhibited fine ability of energy dissipation and kinematic performance. In addition, the difficulty of component connection with the conventional BRBs was overcome.
出处
《兰州理工大学学报》
CAS
北大核心
2008年第5期122-126,共5页
Journal of Lanzhou University of Technology
基金
国家自然科学基金(50678078)
关键词
约束屈曲支撑
接触环
有限元分析
buckling restrained braces
contact-ring
finite element analysis
