%0 Journal Article
%T Finite Element Analysis of Reinforced Concrete Beams with Corrosion Subjected to Shear
%A Tanarat Potisuk
%A Christopher C. Higgins
%A Thomas H. Miller
%A Solomon C. Yim
%J Advances in Civil Engineering
%D 2011
%I Hindawi Publishing Corporation
%R 10.1155/2011/706803
%X Finite element (FE) modeling techniques were developed to isolate the different contributions of corrosion damage to structural response of experimental reinforced concrete beams with shear-dominated behavior. Corrosion-damage parameters included concrete cover spalling due to the expansion of corrosion products; uniform stirrup cross-sectional loss from corrosion; localized stirrup cross-sectional loss due to pitting; debonding of corrosion-damaged stirrups from the concrete. FE analyses were performed including both individual and combined damages. The FE results matched experimental results well and quantitatively estimated capacity reduction of the experimental specimens. 1. Introduction Many conventionally reinforced concrete (CRC) structures are exposed to conditions that can lead to corrosion of the embedded reinforcing steel. These include coastal structures subjected to wind-born salt spray and seawater as well as bridges subjected to deicing salt. Engineers often must evaluate existing structures that exhibit corrosion-induced damage, and only limited information is available for condition assessment and structural evaluation. A tool that has become widely used for analysis of structures is finite element analysis; however, application to corrosion-damaged structures requires modeling assumptions. Assessment of the sensitivity of results to the modeling assumptions requires parametric study and validation with experimental results. This paper presents modeling details for finite element analysis of CRC beams with corrosion damage to shear reinforcement and provides comparison of analyses with large-scale experiments on beam specimens for a range of corrosion-damaged components. Previous research on the effects of corrosion damage has focused on flexural behavior of reinforced concrete (RC) members [1¨C4], the effects of corrosion on the bond behavior of corroded rebar [5, 6], and the effects of cross-section loss due to corrosion on the mechanical properties of rebar [7, 8]. Previous research on the effects of corrosion on shear behavior of RC beams is lacking. An experimental study on the capacity assessment of RC beams with corrosion damage to the transverse steel was accomplished [9]. This research focused on the behavior of RC beams exhibiting various levels of corrosion damage to the transverse steel. Detailed experimental observations as well as applications of traditional analysis techniques to predict capacity are presented in the works of Higgins and Farrow III [10] and Higgins et al. [11]. These beam specimens were used to aid the
%U http://www.hindawi.com/journals/ace/2011/706803/