Time?dependent cyclic behavior of reinforced concrete bridge columns under chlorides?induced corrosion and rebars buckling

This study presents the results of a refined numerical investigation meant at understanding time-dependent cyclic behavior reinforced concrete (RC) bridge columns under chlorides-induced corrosion. The chloride ingress in cross-section column is simulated, taking into account effects temperature, humidity, aging, and corrosion-induced cover cracking. Once partial differential equations governing such multiphysics problem are solved through finite-element method, loss reinforcement steel bars calculated based on estimated corrosion current density. nonlinear response RC is, thus, determined by discretizing its cross-sections several unidirectional fibers. In particular, modeling corroded longitudinal rebars exploits novel proposal for estimation ultimate strain tension also accounts buckling compression. A parametric finally conducted real case to unfold role pattern mode time variation capacity ductility columns.