There have been a great number of researches on CFT joints.But most of them focused on the ultimate resistance of certain joints.And the study on the stiffness of CFT joints has been seen seldom.

• 目前国内对钢管混凝土节点所作的研究,大多数都是针对具体形式的节点的承载力研究,很少探讨钢管混凝土节点的刚度问题。