Analytical Evaluation of Structural Performance of Reinforced Concrete Beams Considering Degree of Reinforcing Bar Corrosion

摘要

The losses in the structural performance of reinforced concrete members with corroded rebars are caused by the loss in the effective cross-sectional area of concrete due to cracking in the cover concrete, loss in the mechanical performance of rebars due to the loss in their cross-sectional area, and loss in the bond performance of concrete with rebars. Accordingly, the mechanism of the reduction in the performance of concrete structural members with corroded rebars may be elucidated using the finite element method (FEM), if the constitutive law for each material factor can be derived using the degree of rebar corrosion as a parameter.