F.E.M Analysis of Static Tensile Properties of Corroded Steel Structure at Connections

The second part of the two companion papers investigates the tensile properties of corroded steel structures numerically at connections. However, the design and calculation methodology of steel structures that are infl uenced by corrosion has not been proposed. This study simultaneously evaluated the tensile behavior of 4 types of artifi cially corroded steel members with concrete specimens in 100, 200, 400, and 600 cycles, and non-linear fi nite element methods (F.E.M) are also performed to assess the tensile behavior of corroded specimen over time. Based on the obtained results, fi nite element method model can be totally replaced experimental to analyze tensile properties of corroded steel structure at connections cause the error between F.E.M and the experiment is less than 3% in term of loading such as ultimate load, fracture load, yield load and at the same time F.E.M can ultimately fi nd out all the characteristics of the corrosion surface geometry such as displacement, cracks, destructive cross-sections, stress distribution. F.E.M can determine the failure cross-section of any corroded steel members. Accordingly, the infl uence eff ective thickness for the design and calculation of the corrosion-resistant steel structure overtime is also proposed based on the average depth of corrosion and standard deviation.