Flexural retrofit of a bridge subjected to overweight trucks using CFRP laminates

Ching Chiaw Choo, Tong Zhao, Issam Harik

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


The reinforced concrete spans of a bridge subjected to extreme vehicular loads are investigated and retrofitted with carbon fiber reinforced polymer (CFRP) laminates. A finite element model of the bridge superstructure was created to determine the forces resulting from extreme loads. A moment-curvature analysis was subsequently carried out to investigate the flexural characteristics of the reinforced concrete sections prior to and after strengthening with CFRP laminates. The analytical modeling concluded that significant strength can be gained at the ultimate limit state, while relatively small increase in strength is observed at service load levels. The increase in flexural resistance at ultimate does provide an adequate margin of safety against further overloading. The analytical investigation and the retrofitting work are presented herein.

Original languageEnglish
Pages (from-to)732-738
Number of pages7
JournalComposites Part B: Engineering
Issue number5-6
StatePublished - Jul 2007

Bibliographical note

Funding Information:
Financial support for this project was provided by the Federal Highway Administration and the Kentucky Transportation Cabinet under the Innovative Bridge Research and Construction Program – IBRC (Grant FRT118).


  • A. Carbon-fibre
  • B. Strength
  • Bridge repair
  • C. Analytical modeling
  • C. Finite element analysis

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering


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