Ultimate capacity of completely overlapped tubular joints I.An experimental investigation

摘要

This paper presents the experimental finding of a full-scale completely overlapped joint tested to failure under lap brace axial compression. The failure mode of the joint was due to the through brace face plastification. An ovalising effect of the through brace cross-section and bending on the gap region were noted. The onset of non-linear behaviour occurred at 72/100 of the ultimate load. The capacity of the joint was found to be 7.3/100 higher that that of the simple gap K-joint, which was determined from the ultimate strength formula.