建筑钢结构进展2025，Vol.27Issue(7)：31-43,93,14.DOI:10.13969/j.jzgjgjz.20240301002
装配式槽钢腹板开孔耗能支撑滞回性能试验研究
Experimental Study on Hysteretic Performance of Assembled Energy Dissipation Brace with Perforated Channel Steel
摘要
Abstract
A novel type of energy dissipation brace is composed of channel steel with holes on the webs installed at both ends of the central brace.The perforated channel steel and the H-shaped steel brace are bolted to avoid the pressure buckling of the central brace.To study the hysteretic performance of the brace,three braces with different shapes of holes were designed,and the specimens were subjected to low cycle reversed loading test and finite element simulation analysis.The results show that under the action of axial force,the energy dissipation of the brace is mainly dependent on the plastic deformation of the plates between the web holes.During the loading process,the bolt appeared to slip and the hysteresis curve exhibited pinching phenomenon in different degrees.The energy dissipation capacity of the specimens with elliptical holes is the best,and the load-bearing capacity of the specimens with diamond-shaped holes is the highest.Reducing the aspect ratio of the plate between the holes of the web can significantly improve the bearing capacity and energy dissipation capacity of the specimen during later stages of loading.The impact on energy dissipation capacity of the specimen by reducing the height-to-thickness ratio of the plate between holes is not significant.Furthermore,under the same opening ratio,it has been observed that the energy dissipation capacity of the specimens with elliptical holes provide higher load-bearing capacity compared to those with slotted circular and diamond-shaped holes.关键词
装配式耗能支撑/开孔形状/低周往复加载试验/滞回性能/有限元分析/开孔率Key words
assembled energy dissipation brace/hole shape/low cycle reversed loading test/hysteretic performance/finite element analysis/opening ratio分类
建筑与水利引用本文复制引用
徐奔,赵宝成,顾晨姣..装配式槽钢腹板开孔耗能支撑滞回性能试验研究[J].建筑钢结构进展,2025,27(7):31-43,93,14.基金项目
国家自然科学基金(51878432),江苏省研究生科研创新计划项目(KYCX22_3287) （51878432）
