摘要
为解决传统偏心支撑结构震后修复困难、经济性差的问题,提出了以钢管铅芯阻尼器作为耗能梁段的可更换耗能梁段偏心支撑结构方案。共设置18组试件,采用有限元软件ABAQUS对不同钢管高径比、径厚比、钢材屈服强度情况下的可更换钢管铅芯阻尼器K型、D型偏心支撑钢框架进行结构分析,考察了耗能梁段、整体框架结构的变形机制、滞回耗能能力以及局部屈曲、局部破坏形态。分析结果表明:可更换钢管铅芯阻尼器偏心支撑框架耗能性能优良、工作性能稳定,钢管铅芯阻尼器首先发生屈服,钢管与铅芯协同工作,并起到主要的耗能作用。在可更换偏心支撑结构实际工程应用中的钢管铅芯阻尼器,建议其钢管高径比宜小于3、钢管径厚比宜大于0.13、钢管钢材宜采用软钢及低屈服点钢。
In the light of the problems that steel shear panel damper exist out of plane buckling,a new scheme using lead-filled steel tube damper for active beam link is put forward in this paper. Different heigth-diameter,diameter-thickness,yield point of steel tube in a steel frame with lead-filled steel tube damper are analyzed with finite element analysis software ABAQUS,and the deformation mechanism,hysteretic energy dissipation capacity and local damage of damper are studied. The simulation result shows that the scheme using lead-filled steel tube damper of active beam link is feasible,the lead-filled steel tube damper yields firstly and plays a major role in energy dissipation. In practical engineering,it is suggested that the heigth-diameter is less than 3,the diameter-thickness is more than 0. 13,and the steel tube should adopt mild steel or low yield point steel.
出处
《工程抗震与加固改造》
北大核心
2016年第1期79-88,共10页
Earthquake Resistant Engineering and Retrofitting
基金
教育部"创新团队发展计划"结构隔震与减震(振)控制(IRT13057)
广东省自然科学基金团队项目(8351009101000001)
广州市高校"羊城学者"首席科学家项目(10A026S)
关键词
耗能梁段
钢管铅芯阻尼器
消能减震
偏心支撑
active beam link
lead-filled steel tube damper
energy dissipation
eccentric brace
finite element analysis
