Evaluation of Effective Width and Distribution Factors for GFRP Bridge Decks Supported on Steel Girders
Publication: Journal of Bridge Engineering
Volume 11, Issue 4
Abstract
Glass fiber-reinforced polymer (GFRP) bridge deck systems offer an attractive alternative to concrete decks, particularly for bridge rehabilitation projects. Current design practice treats GFRP deck systems in a manner similar to concrete decks, but the results of this study indicate that this approach may lead to nonconservative bridge girder designs. Results from a number of in situ load tests of three steel girder bridges having the same GFRP deck system are used to determine the degree of composite action that may be developed and the transverse distribution of wheel loads that may be assumed for such structures. Results from this work indicate that appropriately conservative design values may be found by assuming no composite action between a GFRP deck and steel girder and using the lever rule to determine transverse load distribution. Additionally, when used to replace an existing concrete deck, the lighter GFRP deck will likely result in lower total stresses in the supporting girders, although, due to the decreased effective width and increased distribution factors, the live-load-induced stress range is likely to be increased. Thus, existing fatigue-prone details may become a concern and require additional attention in design.
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Acknowledgments
The authors would like to thank Martin Marietta Composites for providing the GFRP deck used in this study. Test results for the Fairground Bridge were provided by Bridge Diagnostics Inc., testing of the Boyer Bridge was funded by PennDOT and FHwA; and testing of the SC S655 Bridge was funded by SCDOT and FHwA. The authors also wish to thank Mr. Kevin Turner of Collins Engineers in Mt. Pleasant, S.C., for his help.
References
AASHTO. (1996). Standard specifications for highway bridges, 16th Ed., AASHTO, Washington, D.C.
AASHTO. (2004). AASHTO LRFD bridge design specifications, 3rd Ed., AASHTO, Washington, D.C.
Black, S. (2003). “How are composite bridges performing?” Compos. Technol., December, 16–22.
Bridge Diagnostics Inc. (BDI). (2003). Load testing and rating report updating, Fairground Road Bridge, Greene County, Ohio, BDI, Boulder, Colo.
Chandrashekhara, K., and Nanni, A. (2000). “Experimental testing and modeling of a GFRP bridge.” Research, Development, and Technology Rep. No. RI 98-032, Missouri Dept. of Transportation, Jefferson City, Mo.
Coogler, K., Harries, K. A., Wan, B., Rizos, D. C., and Petrou, M. F. (2005). “Critical evaluation of strain measurements in glass fiber-reinforced polymer bridge decks.” J. Bridge Eng., 10(6), 704–712.
Crocker, H., Shehata, E., Haldane-Wilson, R., and Mufti, A. (2002). “Innovative fibre reinforced bridge deck modules.” Proc., 3rd Int. Conf. on Composites in Infrastructure, Univ. of Arizona, Tucson, Ariz.
Eom, J., and Nowak, A. S. (2001). “Live load distribution for steel girder bridges.” J. Bridge Eng., 6(6), 489–497.
Federal Highway Administration (FHwA). (2004). Deficient bridges by state and highway system, U.S. Dept. of Transportation, FHwA, Washington, D.C.
GangaRao, H., Thippeswamy, H. K., Shekar, V., and Craigo, C. (1999). “Development of glass fiber-reinforced polymer composite bridge deck.” SAMPE J., 35(4), 12–15.
Hooks, J., and O’Connor, J. (2004). “A summary of six years experience using GFRP composites for bridge decks.” Proc., 21st Int. Bridge Conf., Engineers Society of Western Pennsylvania, Pittsburgh.
Keelor, D. C., Luo, V., Earls, C. J., and Yulismana, W. (2004). “Service load effective compression flange width in glass fiber-reinforced polymer deck systems acting compositely with steel stringers.” J. Compos. Constr., 8(4), 289–297.
Keller, T., and Gürtler, H. (2005). “Composite action and adhesive bond between fiber-reinforced polymer bridge decks and main girders.” J. Compos. Constr., 9(4), 360–368.
Keller, T., Gurtler, H., and Zhou, A. (2004). “Performance of adhesively bonded GFRP deck and steel bridge girders.” Proc., 4th Conf. on Advanced Composite Materials in Bridges and Structures, Canadian Society of Civil Engineers, Montréal.
Luo, Y. (2003). “The composite response assessment of the steel beam-FRP deck system in the Boyer Bridge.” MS thesis, Univ. of Pittsburgh, Pittsburgh.
Martin Marietta Composites (MMC). (2001). Duraspan fiber-reinforced polymer (FRP) bridge deck technical literature, MMC, Raleigh, N.C.
Moon II, F. L., Eckel II, D. A., and Gillespie Jr., J. W. (2002). “Shear stud connection for the development of composite action between steel girders and fiber-reinforced polymer bridge decks.” J. Struct. Eng., 128(6), 762–770.
Motley, D. R., Castanos, S. A., Klang, E. C., and Richards, D. (2002). “Effects of diagonal webs in GFRP bridge decks.” Proc., 3rd Int. Conf. on Composites in Infrastructure, Univ. of Arizona, Tucson, Ariz.
National Bridge Inventory (NBI). (2003). ⟨http://www.nationalbridgeinventory.com⟩ (Mar. 14, 2005 ).
Turner, M. K. (2003). “In situ evaluation of demonstration GFRP bridge deck system installed on South Carolina Route S655.” MS thesis, Dept. of Civil and Environmental Engineering, Univ. of South Carolina, Columbia, S.C.
Turner, K., Harries, K. A., and Petrou, M. F. (2003). “In situ structural evaluation of GFRP bridge deck system.” Proc., 82nd Annual Meeting, Transportation Research Board, Washington, D.C.
Turner, K. M., Harries, K. A., Petrou, M. F., and Rizos, D. (2004). “In situ structural evaluation of GFRP bridge deck system.” Compos. Struct., 65(2), 157–165.
Yulismana, W. (2005). “Experimental study of the behavior of fiber reinforced polymer bridge deck system.” Ph.D. dissertation, Univ. of Pittsburgh, Pittsburgh.
Zhou, A., Lesko, J. J., Coleman, J. T., and Cousins, T. E. (2002). “Failure modes and failure mechanisms of fiber reinforced polymer composite bridge decks.” Proc., 3rd Int. Conf. on Composites in Infrastructure, Univ. of Arizona, Tucson, Ariz.
Zokaie, T., Imbsen, R., Osterkamp, T., and Wong, T. (1992). “Distribution of wheel loads on highway bridges.” NCHRP Project 12-26, National Cooperative Highway Research Program, Washington, D.C.
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© 2006 ASCE.
History
Received: Apr 28, 2005
Accepted: Aug 3, 2005
Published online: Jul 1, 2006
Published in print: Jul 2006
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