Modelling RC bridge columns under the combined effects of traffic and reinforcement corrosion

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Conference8th International Conference on Short and Medium Span Bridges: 03 August 2010, Niagara Falls, Ontario, Canada
SubjectConcrete bridge, combined loads, traffic, reinforcement corrosion, structural dynamics, finite element model; Bridges
AbstractThis paper presents a numerical model of individual and compound effects of traffic and corrosion-induced damage in RC bridge columns on the dynamic performance of the bridge superstructure. The procedure includes two time-dependent cycles presenting each process: an external cycle, which represents the corrosion process, and an internal cycle, which performs time-history analysis of the bridge under traffic load. The slab-on-girder bridge is modelled as a beam-on-two-columns system (BOTC) using a two-dimensional finite element method, and the truck is modelled as a two-degree of freedom dynamic system integrated with the bridge model. Corrosion-induced damage is introduced through the reduction of the reinforcing steel area and spalling of the concrete cover. It is found that the model is efficient in simulating the static and dynamic behaviour of slab-on-girder bridges. From the case study, it is found that although reinforcement corrosion of the bridge columns significantly reduces their capacity, it only causes a marginal increase in the bridge superstructure dynamic deflection under the dynamic movement of the truck.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number53536
NPARC number20374762
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Record identifierf2a10279-46cb-4917-83ce-5f1a8720b5ae
Record created2012-07-23
Record modified2016-05-09
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