A PREDICTION METHOD OF STRENGTH DETERIORATION IN AGING OF CIRCULAR STEEL TUBE CORRODED IN MARINE ENVIRONMENT

This paper presents a future prediction method of strength deterioration of circular steel column corroded along with aging in marine environment. Corroded surfaces along with aging are made by the two models. One model makes surface unevenness caused by corrosion progress and the other expresses deterioration of paint to prevent rust. And based on the corroded surface made by the models, the remaining strength after a passing period can be predicted by FEM analyses or other formulae evaluating the strength. It is concluded from results that the prediction method proposed herein is persuasive enough to express the actual phenomena of corrosion and can predict the compressive strength of circular steel tube along with aging.