CUMULATIVE PLASTIC DEFORMATION CAPACITY OF CIRCULAR HOLLOW SECTION T-JOINTS SUBJECTED TO CYCLIC BENDING MOMENT

摘要

This research investigated the collapse mechanism and the cumulative plastic deformation capacity of the CHS T-joints subjected to cyclic bending moment. As a conclusion, the results are summarized as follows. 1)The collapse mechanism was classified to two types which are the local deformation of the chord and the local buckling at the end of the brace. The locations of crack were categorized into three types, which are the weld toe on the chord, the weld toe on the brace and the local buckling zone of the brace.