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Advances in Materials Science and Engineering
Volume 2016 (2016), Article ID 2738265, 15 pages
http://dx.doi.org/10.1155/2016/2738265
Research Article

Computational Modelling Strategies for Nonlinear Response Prediction of Corroded Circular RC Bridge Piers

1Department of Civil Engineering, University of Bristol, Bristol BS8 1TR, UK
2Department of Civil and Environmental Engineering, University of Washington, Seattle, WA 98195-2700, USA

Received 30 December 2015; Accepted 19 April 2016

Academic Editor: Seung-Jun Kwon

Copyright © 2016 Mohammad M. Kashani et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A numerical model is presented that enables simulation of the nonlinear flexural response of corroded reinforced concrete (RC) components. The model employs a force-based nonlinear fibre beam-column element. A new phenomenological uniaxial material model for corroded reinforcing steel is used. This model accounts for the impact of corrosion on buckling strength, postbuckling behaviour, and low-cycle fatigue degradation of vertical reinforcement under cyclic loading. The basic material model is validated through comparison of simulated and observed responses for uncorroded RC columns. The model is used to explore the impact of corrosion on the inelastic response of corroded RC columns.