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Time-dependent cyclic behavior of reinforced concretebridge columns under chlorides-induced corrosion andrebars buckling
This study presents the results of a refined numerical investigation meant at understanding the time-dependent cyclic behavior of reinforced concrete (RC) bridge columns under chlorides-induced corrosion. The chloride ingress in the cross-section of the bridge column is simulated, taking into account the effects of temperature, humidity, aging, and corrosion-induced cover cracking. Once the partial differential equations governing such multiphysics problem are solved through the finite-element method, the loss of reinforcement steel bars cross-section is calculated based on the estimated corrosion current density. The nonlinear cyclic response of the RC bridge column under corrosion is, thus, determined by discretizing its cross-sections into several unidirectional fibers. In particular, the nonlinear modeling of the corroded longitudinal rebars exploits a novel proposal for the estimation of the ultimate strain in tension and also accounts for buckling under compression. A parametric numerical study is finally conducted for a real case study to unfold the role of corrosion pattern and buckling mode of the longitudinal rebars on the time variation of capacity and ductility of RC bridge columns.
Time-dependent cyclic behavior of reinforced concretebridge columns under chlorides-induced corrosion andrebars buckling
This study presents the results of a refined numerical investigation meant at understanding the time-dependent cyclic behavior of reinforced concrete (RC) bridge columns under chlorides-induced corrosion. The chloride ingress in the cross-section of the bridge column is simulated, taking into account the effects of temperature, humidity, aging, and corrosion-induced cover cracking. Once the partial differential equations governing such multiphysics problem are solved through the finite-element method, the loss of reinforcement steel bars cross-section is calculated based on the estimated corrosion current density. The nonlinear cyclic response of the RC bridge column under corrosion is, thus, determined by discretizing its cross-sections into several unidirectional fibers. In particular, the nonlinear modeling of the corroded longitudinal rebars exploits a novel proposal for the estimation of the ultimate strain in tension and also accounts for buckling under compression. A parametric numerical study is finally conducted for a real case study to unfold the role of corrosion pattern and buckling mode of the longitudinal rebars on the time variation of capacity and ductility of RC bridge columns.
Time-dependent cyclic behavior of reinforced concretebridge columns under chlorides-induced corrosion andrebars buckling
Pelle, Angelo (Autor:in) / Briseghella, Bruno (Autor:in) / Bergami, Alessandro Vittorio (Autor:in) / Fiorentino, Gabriele (Autor:in) / Giaccu, Gian Felice (Autor:in) / Lavorato, Davide (Autor:in) / Quaranta, Giuseppe (Autor:in) / Rasulo, Alessandro (Autor:in) / Nuti, Camillo (Autor:in)
16.09.2021
Pelle , A , Briseghella , B , Bergami , A V , Fiorentino , G , Giaccu , G F , Lavorato , D , Quaranta , G , Rasulo , A & Nuti , C 2021 , ' Time-dependent cyclic behavior of reinforced concretebridge columns under chlorides-induced corrosion andrebars buckling ' , Structural Concrete . https://doi.org/10.1002/suco.202100257
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Behavior of corrosion damaged circular reinforced concrete columns under cyclic loading
| British Library Online Contents | 2012
Behavior of corrosion damaged circular reinforced concrete columns under cyclic loading
| Online Contents | 2012