EXPERIMENTAL STUDY ON REMAINING CAPACITY OF CORRODED COMPRESSIVE MEMBERS IN STEEL TRUSS BRIDGE

Abstract

 This paper discusses remaining capacity of corroded compressive box-section members which were cut out of a demolished 50-year-old steel truss bridge. Laser surface measurement of corrosion depth and compressive loading tests were conducted for the specimens after introducing artificial local loss section area. As results of the loading tests, it is found that local buckling mode was dominant for specimens with artificial corrosion, while specimens without artificial corrosion showed overall buckling mode at the ultimate state.