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http://dx.doi.org/10.4334/JKCI.2002.14.4.556

Analysis of Strengthening Veriables for Strengthened Bridge Decks by Externally Bonded Sheet  

심종성 (한양대학교 토목ㆍ환경공학과)
오흥섭 (한양대학교 토목ㆍ환경공학과)
Publication Information
Journal of the Korea Concrete Institute / v.14, no.4, 2002 , pp. 556-565 More about this Journal
Abstract
The concrete bridge decks on the main girder will usually develop initial cracks in the longitudinal or the transverse direction due to dry shrinkage and temperature change, and as the bridge decks age the crack will gradually develop in different directions due to repeated cyclic loads. The strengthening direction of the concrete bridge deck is a very important factor in improving proper structural behavior. Therefore, in this study, theoretical analyses of strengthened bridge decks were performed using the nonlinear finite element method. To improve the accuracy of the analytical result, boundary conditions and material property of strengthening material was simulated by laboratory condition and test results, respectively. The effect of the strengthening direction and the amount of strengthening material were estimated and compared to the experimental results. The efficiency of the strengthened bridge decks by strengthening variables such as the amount, width and thickness of CFS was observed.
Keywords
bridge deck; carbon fiber sheet; nonlinear finite element method; strengthening variables;
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