PLASTIC DEFORMATION CAPACITY OF COLD-FORMED RECTANGULAR HSS COLUMNS CONNECTED TO THROUGH-DIAPHRAGM BY ROBOTIC WELDING

（Effect of Corner Weld Joint Details on Cyclic Flexural Performance of Columns）

Abstract

An increases in strength at the corner portion of cold-formed rectangular HSS due to its manufacturing process, may results in undermatched CJP welded joint at the corner regions. This paper investigates the impact of the properties of CJP corner welded joints: the weld metal strength and the shape of weld toe on the cyclic fl exural responses. The results of cyclic loading tests of the cantilever column and associated fi nite element analyses showed the plastic deformation capacity determined by the fracture initiated from the weld toe was significantly affected by the weld toe shape, rather than the weld metal strength.