摘要
有效控制支撑的震后残余变形是控制支撑-框架结构残余位移的有效途径之一。为此提出一种新型串联双筋自复位屈曲约束支撑。研究结果表明:BRB核心板面积越大,SCBRB的耗能能力越强,预应力筋的面积变化对SCBRB各阶段的刚度影响较大,初始张拉力将影响SCBRB的自复位效果,且三者都会影响支撑的变形能力。
To control the residual deformation of the brace is one of the effective ways to reducethe residual displacement of the steel braced frame after the earthquake. This paper presents a newself-centering buckling- restrained brace （SCBRB） with double tendons in series. The results show thatenergy dissipation capacity of the SCBRB increased with the growing area of the core plate. The areaof the prestressed tendons affected significantly the stiffness of the SCBRB in each stage. The initialtensile force affected the self-centering performance of the SCBRB. In all, the three parameters allinfluenced the deformation capacity of the brace.
出处
《建筑技术》
北大核心
2017年第5期552-555,共4页
Architecture Technology
基金
江苏高校品牌专业建设工程一期项目(PPZY2015C233)
2014年度高校青蓝工程项目
江苏省高校自然科学面上项目(2016KJB560022)
关键词
自复位屈曲约束支撑
预应力筋
残余变形
滞回性能
self-centering buckling-restrained brace
prestressed tendons
residual deformation
hysteretic properties
