Abstract
In order to examine the fatigue performance of repairing welds and residual stress relieving for corner joint with weld defects, box section specimens of 300mm in height. 130mm in width and 3400mm in length were tested. The fatigue strength of corner joints which were repaired by using arc-gouging and welding satisfied the allowable stress range for category B. The improvement of fatigue strength by stress relieving is not so significant. Based on these results, the repairing method by using arc-gouging and welding was adopted for the fabrication of the Seto bridges in Honshu-Shikoku bridge project.
