建筑钢结构进展2025，Vol.27Issue(9)：27-39,51,109,15.DOI:10.13969/j.jzgjgjz.20240417001
梁柱斜交节点单肢弧形角钢滞回性能研究
Hysteretic Behavior of Single Arc Angle in Sloped Beam-to-Column Connection
摘要
Abstract
In order to study the hysteretic behavior of single arc angle in the sloped top-bottom angle beam-to-column connection,a total of 37 specimens of 6 series single arc angles were designed,and the related parameters of angle,angle thickness,arc radius of angle steel,column limb length,stiffener thickness,stiffener type were considered.The finite element software of ABAQUS was adopted for numerical simulation,and the influence of related parameters on the initial stiffness,post-yield stiffness,yield strength,failure mode and energy dissipation capacity of single arc angle were systematically analyzed.Based on the angle restoring force model proposed by GARLOCK et al,the macro restoring force model of single arc angle was developed in the current study.The analytical results show that the employment of stiffener changed the failure mode of single arc angle.For the single arc angle without stiffener,two plastic hinge lines occurred at the middle region of the arc location and the edge region of high-strength bolt connected column limb.For the stiffener angle with stiffener,the plastic hinge lines developed between the two sides of stiffener and the middle region of the arc location.The influence of angle parameter on the mechanical behavior of obtuse-angled single arc angle was larger than that of acute-angled single arc angle.Increasing the angle thickness,reducing the length of column limb and adding stiffener could improve the initial stiffness,yield bearing capacity and energy dissipation capacity of single arc angle,and the influence of other parameters was relatively small.Based on the theoretical analysis,the calculation formulas of initial stiffness,post-yield stiffness and yield bearing capacity of single arc angle with and without stiffener were proposed.The proposed restoring force model of sloped single arc angle can effectively predict its hysteretic behavior with enough accuracy,and it can be used for engineering design and analysis of this type of sloped beam-to-column connection.关键词
单肢弧形角钢/斜交连接/初始刚度/屈服承载力/有限元分析/恢复力模型/滞回性能Key words
single arc angle/sloped connection/initial stiffness/yield capacity/finite element analysis/restoring force model/hysteretic behavior分类
建筑与水利引用本文复制引用
龚富涛,孙国华,黎智琴..梁柱斜交节点单肢弧形角钢滞回性能研究[J].建筑钢结构进展,2025,27(9):27-39,51,109,15.基金项目
国家自然科学基金(51578355,52378173) （51578355,52378173）
