Structural Evaluation and Construction of Fiber-Reinforced Polymer Composites Strengthening Systems for the Sauvie Island Bridge
Publication: Journal of Composites for Construction
Volume 11, Issue 2
Abstract
This paper presents the results of a multiphase project aimed at developing composite systems for flexural capacity upgrade of steel girders. This study is divided into three phases; namely (1) large-scale verifications tests of two strengthening systems; (2) field application of the composite systems; and (3) long-term monitoring of the performance strengthening system. The two composite systems that were evaluated in this program are precured carbon/epoxy strip and a composite sandwich system. A description of the field application of the composite systems as well as in situ bondline evaluation of the different adhesive systems is presented. A simplified linear analysis for the H-Lam composite system was developed. The nonlinear behavior of the hybrid composite system was modeled using NASTRAN and GENOA finite-element FE) models. A good correlation between the predicted linear and nonlinear FE results and the half-scale tests was achieved. Based on the results of this pilot program, it is concluded that composites can successfully be used for upgrading the flexural capacity of bridge steel girders.
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Acknowledgments
This study was funded by the U.S. Federal Highway Administration (FHwA) IBRC T21 program. The major contribution of Mr. Kenneth R. Huntley of the Multnomah County Bridge Section, Portland, Ore., is acknowledged. The effort of Professor W. H. Mueller and both graduate and undergraduate students at the Portland State University in the experimental verification program is highly appreciated. The in-kind support of Structural Construction Composites Incorporated (SCCI), ITW Sigma Composites, LLC, and Structural Construction Plexus for donating the H-Lam snadwich Panels and adhesives for the field application and Fyfe Company for donating the CFRP and epoxy for the CFRP beam test are acknowledged.
References
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Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 11 • Issue 2 • April 2007
Pages: 236 - 249
Copyright
© 2007 ASCE.
History
Received: Jun 15, 2005
Accepted: Nov 16, 2005
Published online: Apr 1, 2007
Published in print: Apr 2007
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