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 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 accoun...
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| Veröffentlicht in: | Structural concrete : journal of the FIB 2022-02, Vol.23 (1), p.81-103 |
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| container_title | Structural concrete : journal of the FIB |
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| creator | Pelle, Angelo Briseghella, Bruno Bergami, Alessandro Vittorio Fiorentino, Gabriele Giaccu, Gian Felice Lavorato, Davide Quaranta, Giuseppe Rasulo, Alessandro Nuti, Camillo |
| description | 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. |
| doi_str_mv | 10.1002/suco.202100257 |
| format | Article |
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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.</description><identifier>ISSN: 1464-4177</identifier><identifier>EISSN: 1751-7648</identifier><identifier>DOI: 10.1002/suco.202100257</identifier><language>eng</language><publisher>Weinheim: WILEY‐VCH Verlag GmbH & Co. KGaA</publisher><subject>Aging (artificial) ; bridge column ; Buckling ; chloride ; Chlorides ; Columns (structural) ; Concrete bridges ; Corrosion ; Corrosion currents ; Corrosion effects ; finite‐element analysis ; generalized corrosion ; multiphysics analysis ; Nonlinear response ; Partial differential equations ; pitting corrosion ; Rebar ; rebar buckling ; Reinforced concrete ; Reinforcing steels ; seismic response ; Temperature effects ; Time dependence</subject><ispartof>Structural concrete : journal of the FIB, 2022-02, Vol.23 (1), p.81-103</ispartof><rights>2021 The Authors. Structural Concrete published by John Wiley & Sons Ltd on behalf of International Federation for Structural Concrete</rights><rights>2021. This article is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). 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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.</description><subject>Aging (artificial)</subject><subject>bridge column</subject><subject>Buckling</subject><subject>chloride</subject><subject>Chlorides</subject><subject>Columns (structural)</subject><subject>Concrete bridges</subject><subject>Corrosion</subject><subject>Corrosion currents</subject><subject>Corrosion effects</subject><subject>finite‐element analysis</subject><subject>generalized corrosion</subject><subject>multiphysics analysis</subject><subject>Nonlinear response</subject><subject>Partial differential equations</subject><subject>pitting corrosion</subject><subject>Rebar</subject><subject>rebar buckling</subject><subject>Reinforced concrete</subject><subject>Reinforcing steels</subject><subject>seismic response</subject><subject>Temperature effects</subject><subject>Time dependence</subject><issn>1464-4177</issn><issn>1751-7648</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><sourceid>24P</sourceid><recordid>eNqFkL1OwzAUhS0EEqWwMltiTokdO05HVPEnVerQMkfJzXXrktrFbkBdEI_AM_IkuAqCken-6HznXh1CLlk6YmnKr0MHbsRTfhikOiIDpiRLVC6K49iLXCSCKXVKzkJYR0ns5YC8L8wGvz4-G9yibdDuKOyhNUBrXFWvxnnqNPVorHYesKHgLHjcIa29aZYY57bb2EC7CHsKq9bFPYboaGzT9YT3LhhnaWWbaFVXPtC6g-fW2OU5OdFVG_Dipw7J_O52MXlIprP7x8nNNIFMKpVo3jCmuNRCQoZMZBXWPM1BANOZ4KhRjMdZWggpgUPOaiVznmvBmjqHcTYkV73r1ruXDsOuXLvO23iw5HmmpEoLXkTVqFdB_Dd41OXWm03l9yVLy0Oo5SHh8jfhCIx74M20uP9HXc6fJrM_9hsKzYRU</recordid><startdate>202202</startdate><enddate>202202</enddate><creator>Pelle, Angelo</creator><creator>Briseghella, Bruno</creator><creator>Bergami, Alessandro Vittorio</creator><creator>Fiorentino, Gabriele</creator><creator>Giaccu, Gian Felice</creator><creator>Lavorato, Davide</creator><creator>Quaranta, Giuseppe</creator><creator>Rasulo, Alessandro</creator><creator>Nuti, Camillo</creator><general>WILEY‐VCH Verlag GmbH & Co. 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| subjects | Aging (artificial) bridge column Buckling chloride Chlorides Columns (structural) Concrete bridges Corrosion Corrosion currents Corrosion effects finite‐element analysis generalized corrosion multiphysics analysis Nonlinear response Partial differential equations pitting corrosion Rebar rebar buckling Reinforced concrete Reinforcing steels seismic response Temperature effects Time dependence |
| title | Time‐dependent cyclic behavior of reinforced concrete bridge columns under chlorides‐induced corrosion and rebars buckling |
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