View in EDS

Structural capacity assessment of corroded RC bridge piers.

Saved in:
Bibliographic Details
Title: Structural capacity assessment of corroded RC bridge piers.
Authors: Kashani, Mohammad M.1, Crewe, Adam J.2, Alexander, Nicholas A.2
Source: Proceedings of the Institution of Civil Engineers: Bridge Engineering. Mar2017, Vol. 170 Issue 1, p28-41. 14p.
Subjects: Reinforced concrete construction, Concrete bridges, Numerical analysis, Corrosion & anti-corrosives, Fatigue (Physiology)
Abstract: A new numerical model is developed that enables simulation of the non-linear flexural response of reinforced concrete (RC) components and sections with corroded reinforcement. The numerical model employs a displacement-based beam-column element using the classical Hermitian shape function. Material non-linearity is accounted for by updating element stiffness matrices using the moment-curvature response of the element section considering uniform stiffness over the element. The cover concrete strength is adjusted to account for corrosion-induced cover cracking and the core confined concrete strength and ductility are adjusted to account for corrosion-induced damage to the transverse reinforcement. The numerical model is validated against a benchmark experiment on a corroded RC column subject to lateral cyclic loading. The verified model is then used to explore the impact of corrosion on the inelastic response and the residual capacity of corroded RC sections. The results show that considering the effect of corrosion damage on RC sections changes the failure mode of RC columns. [ABSTRACT FROM AUTHOR]
Copyright of Proceedings of the Institution of Civil Engineers: Bridge Engineering is the property of Thomas Telford Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
Description
Abstract:A new numerical model is developed that enables simulation of the non-linear flexural response of reinforced concrete (RC) components and sections with corroded reinforcement. The numerical model employs a displacement-based beam-column element using the classical Hermitian shape function. Material non-linearity is accounted for by updating element stiffness matrices using the moment-curvature response of the element section considering uniform stiffness over the element. The cover concrete strength is adjusted to account for corrosion-induced cover cracking and the core confined concrete strength and ductility are adjusted to account for corrosion-induced damage to the transverse reinforcement. The numerical model is validated against a benchmark experiment on a corroded RC column subject to lateral cyclic loading. The verified model is then used to explore the impact of corrosion on the inelastic response and the residual capacity of corroded RC sections. The results show that considering the effect of corrosion damage on RC sections changes the failure mode of RC columns. [ABSTRACT FROM AUTHOR]
ISSN:14784637
DOI:10.1680/jbren.15.00023