Abstract
This paper describes a method for the out-of-plane buckling analysis of circular tubular trusses with unstiffened tube-to-tube joints which includes not only the combined non-linear behavior of members but also the stiffness deterioration of joints due to the axial forces of web members. The buckling loads evaluated by our method agree well with experimental results. Effective column lengths are computed for a number of tubular trusses with various dimensions by using the method herein described. From these numerical results, effective column lengths for web members are found to be represented by a simple formula.
