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 concrete bridge columns under chlorides-induced corrosion and rebars buckling / Pelle, A.; Briseghella, B.; Bergami, A. V.; Fiorentino, G.; Giaccu, G. F.; Lavorato, D.; Quaranta, G.; Rasulo, A.; Nuti, C.. - In: STRUCTURAL CONCRETE. - ISSN 1464-4177. - 23:1(2022), pp. 81-103. [10.1002/suco.202100257]

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

Briseghella B.;Fiorentino G.;
2022-01-01

Abstract

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.
23
1
81
103
Time-dependent cyclic behavior of reinforced concrete bridge columns under chlorides-induced corrosion and rebars buckling / Pelle, A.; Briseghella, B.; Bergami, A. V.; Fiorentino, G.; Giaccu, G. F.; Lavorato, D.; Quaranta, G.; Rasulo, A.; Nuti, C.. - In: STRUCTURAL CONCRETE. - ISSN 1464-4177. - 23:1(2022), pp. 81-103. [10.1002/suco.202100257]
Pelle, A.; Briseghella, B.; Bergami, A. V.; Fiorentino, G.; Giaccu, G. F.; Lavorato, D.; Quaranta, G.; Rasulo, A.; Nuti, C.
File in questo prodotto:
File Dimensione Formato  
Structural Concrete - 2021 - Pelle - Time‐dependent cyclic behavior of reinforced concrete bridge columns under.pdf

Open access

Tipologia: Versione pubblicata dall'editore
Dimensione 5.09 MB
Formato Adobe PDF
5.09 MB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1287351
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 9
  • ???jsp.display-item.citation.isi??? ND
social impact