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Local Corrosion and Fatigue Damages of Steel Plates at the Boundary with Concrete  

Kim, In Tae (부산대학교 사회환경시스템공학부)
Kainmua, Shigenobu (큐슈대학 토목공학과)
Cheung, Jin Hwan (부산대학교 사회환경시스템공학부)
Publication Information
Journal of Korean Society of Steel Construction / v.20, no.2, 2008 , pp. 313-321 More about this Journal
Abstract
Recently in Japan, fracturing was observed on the diagonal member of a through truss bridge at the boundary region with the concrete slab. Local corrosion damage where the diagonal member was enclosed in the concrete slab is an important factor in the fracture. In this study, accelerated exposure tests were carried out on concrete-steel model specimens simulating steel members at the boundary with concrete. Fatigue tests were then performed on the corroded model specimens. Accelerated exposure tests of the S6-cycle, which is carried out on the model specimens for 150, 300, 450 and 600 da ys. Their surface geometry was then measured. From the accelerated exposure test results, change in maximum and mean corrosion depths was determined according to the testing periods. The effect of local corrosion on fatigue strength was also presented based on the fatigue test results.
Keywords
steel bridge; concrete-steel; accelerated exposure test; local corrosion; thickness loss; fatigue strength;
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