环口板加强型T型圆钢管节点滞回性能研究  

Study on Hysteretic Behaviour of Circular Tubular T-joints with Collar Plate Reinforcement

作　　者：蔡艳青[1] 邵永波[1] 

机构地区：[1]烟台大学土木工程学院,山东烟台264005

出　　处：《土木工程与管理学报》2011年第3期322-327,共6页Journal of Civil Engineering and Management

基　　金：国家自然科学基金(50808153)

摘　　要：为了研究环口板加固对T型圆钢管节点滞回性能的影响,运用有限元方法对环口板加固T型圆钢管节点进行了滞回性能的参数分析。参数包括支管直径与主管直径比β,主管直径与2倍主管壁厚的比γ,环口板厚度与主管管壁厚之比τc和环口板长度与支管直径之比lc/d1。有限元分析结果表明:环口板加固T型圆钢管节点的滞回性能相对于未加固节点得到了很大的改善。参数β和γ对节点的滞回性能有显著影响。为了改善节点的滞回性能,建议环口板的厚度不宜超过主管厚度的1.5倍,环口板的长度不宜超过支管直径的2倍。To study the hysteretic performance of circular tubular T-joints with collar pl ate reinforcement,a parametric analysis is conducted by using the finite elemen t method.The parameters include： the brace-to-chord diameter ratio β,ch ord radius to twice chord wall thickness ratio γ,collar-plate to chord wa ll thickness ratio τc,and collar-plate length to brace diameter ratio lc/d1.It is found that the hysteretic behaviour of collar plate rei nforced T-joints has been greatly improved compared to that of the un-reinforc ed T-joints.In addition,the parameters γ and β have significant eff ect on the hysteretic behaviour.It can be suggested that the thickness of colla r plate should not exceed 1.5 times of the chord thickness,and the length of co llar plate also should not exceed 2 times of the brace diameter for improving th e hysteretic performance efficiently.

关 键 词：T型圆钢管节点 环口板 参数分析 滞回性能 

分 类 号：TU392.3[建筑科学—结构工程]