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An Experimental Study on the Evaluation of Residual Tensile Load-carrying Capacity of Corroded Steel Plates of Temporary Structure  

Kim, In-Tae (부산대학교 사회환경시스템공학부 토목공학전공)
Chang, Hong-Ju (부산대학교 대학원 사회환경시스템공학과 토목공학전공)
Cheung, Ji-Young (부산대학교 대학원 사회환경시스템공학과 토목공학전공)
Publication Information
Journal of Korean Society of Steel Construction / v.22, no.5, 2010 , pp. 399-409 More about this Journal
Abstract
Steel structures are threatened to reduce load-carrying capacity as the cross section is decreased by corrosion. However, there has been no method in definitely evaluating residual load-carrying capacity and the effect of corrosion to the load-carrying capacity of steel. This study evaluated tensile residual load-carrying capacity of corroded steel plates by using tensile tests of specimens, which were selected from the web of temporary structure's main beam. After the surface shapes were measured and tensile tests were examined, the rust of 21 corroded specimens was, first of all, removed using a chemical method. From the tensile test result, which of reference specimens that was picked off at the flange of the same main 13-mm-thick beam and corroded specimens were based, surface geometry and correlation with the reduction of corroded thickness and strain, yield strength or tensile strength was established as constant numbers. Effective thickness of corroded steel with irregular cross sections could be calculated using average residual thickness and standard deviation. The irregular cross sections could be the evaluated tensile strength that is equalized to non-corroded uniform steel's regardless of corrosion. Also, reasonable measuring intervals of residual thickness could be proposed by using this result to apply for executive work.
Keywords
corrosion; residual load-carrying capacity; effective thickness; tensile test;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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