大直径弦管KK形相贯节点滞回性能的数值模拟

Hysteretic behavior numerical simulation of KK tubular joints with large-diameter chord member

运用数值模拟方法,对空间KK形圆钢管相贯节点的滞回性能进行分析,分析了支管和弦管外径比、弦管径厚比、支管和弦管厚度比、支管与弦管夹角等参数的影响。结果发现,支管和弦管直径比越大,节点的滞回性能越好;增大弦管径厚比和支弦管轴线间夹角,节点的滞回性能反而降低。节点的滞回性能受支弦管厚度比的变化影响不大。

Numerical simulation is adopted to analyze the hysteretic performances of KK tubular joints.The influence of outer diameter ratio of branch member to chord member,diameter thickness ratio of chord member,thickness ratio of chord member to branch member,and the angle between branch and chord members are studied.Analysis shows that the hysteretic performance is enhanced with the outer diameter ratio of branch member to chord member.Enlarging the diameter thickness ratio of chord member and the angle between branch and chord members lowers the hysteretic behavior of the joint.The effect of the thickness ratio of chord member to branch member is not significant.