钢管桁架结构主方支圆K型搭接节点滞回性能分析

The hysterestic characteristic of overlap K-joint with squara chords and circular braces

利用非线性有限元法对主方支圆K型搭接节点的滞回性能进行了数值模拟,得到了该节点在不同参数β、τ、θ、Ov%影响下的滞回曲线、骨架曲线、延性和耗能性能。研究表明,节点在支主管夹角θ影响下,随着θ值的增加,滞回性能增强;节点在支主管径宽比β影响下,随着β值的增加,滞回性能减弱;节点在支主管厚度比τ、搭接率Ov%影响下,滞回性能增强得不明显。

Finit-element analysis method to analyse the hysterestic characteristic of overlapped RHS-K joints,for numerical analysis.Can get the hysterestic curve,skeleton curve,ductility and the ability of power-wasting of the K-joint with squara chords and circular braces under the different parameterβ,τ,θ,Ov％.Obtain the conclusion：Under the influnce of θ,as θ increasing,the hysterestic characteristic of overlap increasing under the influnce ofβ,as β increasing,the hysterestic characteristic of overlap weaking.Under the influnce of τ,as τ increasing,the hysterestic characteristic of overlap increasing.Under the influnce of Ov％,as Ov％ increasing,the hysterestic characteristic of overlap increasing.