Performance Evaluation of Repair Technique for Damaged Fiber-Reinforced Polymer Honeycomb Bridge Deck Panels
Publication: Journal of Bridge Engineering
Volume 9, Issue 1
Abstract
All-composite, fiber-reinforced polymer honeycomb (FRPH) sandwich panels are an innovative application of modern composite materials in civil engineering. These panels have become increasingly popular for use as full-depth bridge decks and have been used to span both transversely between steel or concrete girders and longitudinally between abutments. Although several bridges using FRPH panels have been installed in recent years, a method to repair the panels if they are damaged has not been thoroughly investigated. This paper presents the analysis and full-scale evaluation of a 9.75 m (32 ft) long FRPH member that was subjected to severe core-face delamination damage and subsequently repaired. As such, the work presented herein is the first of its kind to be conducted for FRPH bridge members. The damaged member when repaired was shown to have approximately 65% more capacity than a similar undamaged member. The additional capacity was achieved using a single wrapping layer over the face plates and sinusoidal core. This wrapping layer is believed to have prevented a failure (at the resin bond line) between the face plates and core by engaging a shear-friction type clamping force. The contribution of the wrap layer is considered using simple calculations, rigorous finite-element models, and experimental data. Acoustic emission monitoring was used to compare the performance of the damaged and repaired specimens under sustained load.
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References
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Davalos, J. F., Qiao, P. Z., Xu, X. F., Robinson, J., and Barth, K. E.(2001). “Modeling and characterization of fiber-reinforced plastic honeycomb sandwich panels for highway bridge applications.” J. Compos. Struct., 52(3–4), 441–452.
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Copyright
Copyright © 2004 American Society of Civil Engineers.
History
Received: Dec 26, 2001
Accepted: Dec 13, 2002
Published online: Dec 15, 2003
Published in print: Jan 2004
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