Testing and Analysis of Partially Composite Fiber-Reinforced Polymer-Glulam-Concrete Bridge Girders
Publication: Journal of Bridge Engineering
Volume 9, Issue 4
Abstract
A dowel-type shear connector for achieving composite action in glulam bridge girders supporting a concrete deck is described. Direct shear tests of the connector show that its ultimate capacity is unaffected by fatigue, but that gaps do develop between the dowel and glulam after load cycling. Two 10.7-m-long glulam girders reinforced on the tension face with a fiber-reinforced polymer (FRP) and having composite concrete decks were loaded to failure after being subjected to fatigue cycling. The test results indicate stiffness increases of over 200% and strength gains of over 60% relative to the expected response of a noncomposite girder. Measured flexural strains showed a strain discontinuity at the glulam-concrete interface, as expected. A numerical model for rigorously analyzing FRP-glulam-concrete girders is overviewed, and its predictions are shown to compare favorably with the results of the girder tests. Finally, the design of a 21.3-m-span FRP-glulam-concrete bridge that is slated for completion in Fairfield, Maine, during the summer of 2003 is discussed to demonstrate the practical application of the results presented in this manuscript.
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References
Ahmadi, B. H., and Saka, M. P.(1993). “Behavior of composite timber-concrete floors.” J. Struct. Eng., 119(1), 3111–3130.
American Association of State Highway and Transportation Officials (AASHTO). (1996). Standard specifications for highway bridges, 16th Ed., Washington, D.C.
American Concrete Institute (ACI). (1999). Building code requirements for structural concrete (318-99) and commentary (318R-99), Committee 318, Farmington Hills, Mich.
American Wood Council (AWC). (1997). National design specification for wood construction, Washington, D.C.
Battles, E. P. (2000). “Environmental durability of FRP reinforcement for timber bridges.” Internal Rep., Univ. of Maine Advanced Engineered Wood Composites Center, Orono, Me.
Brody, J., et al. (2000). “FRP-wood-concrete composite bridge girders.” Proc., ASCE Structures Congress 2000: Advanced Technology in Structures (CD-ROM), ASCE, Reston, Va., Section 53, Chapter 1.
Buchanan, A. H.(1986). “Combined bending and axial loading in lumber.” J. Struct. Eng., 112(12), 2592–2609.
Capozucca, R.(1998). “Bond stress system of composite concrete-timber beams.” Mater. Struct., 31, 634–640.
Chajes, M. J., Kaliakin, V. N., Holsinger, S., and Meyers, A. J., Jr. (1995). “Experimental testing of composite wood beams for use in timber bridges.” Proc., 4th Int. Bridge Engineering Conf., Transportation Research Board, Washington, D.C., 2, 371–380.
Dagher, J. J., and Bragdon, M.(2001). “Composites enhance timber bridges.” Civ. Eng., 71(8), A2–A10.
Dagher, H. J., Bragdon, M., and Lindyberg, R. F. (2002). “Advanced FRP-wood composites in transportation applications.” Proc., 81st Annual Meeting, Transportation Research Board, Washington, D.C., Paper No. 02-3484.
Dagher, H. J., Lindyberg, R. F., Abdel-Magid, B., and Shaler, S. (1998). “Static bending test results of douglas-fir and western hemlock FRP-reinforced glulam beams.” AEWC Rep. No. 98-4, Univ. of Maine, Orono, Me.
Davids, W. G.(2001). “Nonlinear analysis of FRP-glulam-concrete beams with partial composite action.” J. Struct. Eng., 127(8), 967–971.
Davids, W. G., Dagher, H. J., and Breton, J.(2000). “Modeling creep deformations of FRP-reinforced glulam beams.” Wood Fiber Sci., 32(4), 426–441.
Gamache, C. P. (2001). “Preliminary investigation on the durability of FRP reinforced glulam bridge girders.” MS thesis, Dept. of Civil and Environmental Engineering, Univ. of Maine, Orono, Me.
Gelfi, P., and Giuriani, E. (1999). “Stud shear connectors in wood-concrete composite beams.” Proc., 1st RILEM Symp. on Timber Engineering, RILEM, Cachan, France, 245–254.
Girhammar, U. A., and Gopu, V. K. A.(1993). “Composite beam-columns with interlayer slip—exact analysis.” J. Struct. Eng., 119(4), 1265–1282.
Goodman, J. R., and Popov, E. P.(1968). “Layered beam systems with interlayer slip.” J. Struct. Div. ASCE, 94(11), 2535–2547.
Gutkowski, R. M. (1996). “Tests and analysis of mixed concrete-wood beams.” Proc., Int. Wood Engineering Conf., New Orleans, 3, 436–442.
Lindyberg, R. F. (2000). “ReLAM: A nonlinear stochastic model for the analysis of reinforced glulam beams in bending.” PhD thesis, Dept. of Civil and Environmental Engineering, Univ. of Maine, Orono, Me.
Lindyberg, R. F., Dagher, H., and Bragdon, M. (2001). “Advanced FRP-wood composites in bridge and building applications.” Proc., 2nd Int. Conf. on Advanced Engineered Wood Composites, Bethel, Me.
Loferski, J. R., Davalos, J. F., and Yadama, V.(1989). “A laboratory-built clip-on strain gauge transducer for testing wood.” For. Prod. J., 39(9), 45–48.
Lu, J. P., and Leicester, R. H.(1996). “Mechano-sorptive effects on timber creep.” Wood Sci. Technol., 31, 331–337.
MacGregor, J. G. (1997). Reinforced concrete mechanics and design, Prentice-Hall, Upper Saddle River, N.J.
Mansur, M. A., Chin, M. S., and Wee, T. H.(1997). “Flexural behavior of high-strength concrete beams.” ACI Struct. J., 94(6), 663–674.
Mantilla-Carrasco, E. V., and Oliviera, S. V. (1999). “Behavior of composite timber-concrete beams.” Proc., 1st RILEM Symp. on Timber Engineering, RILEM, Cachan, France, 581–590.
Plevris, N., and Triantafillou, T.(1992). “FRP-reinforced wood as a structural material.” J. Mater. Civ. Eng., 4(3), 300–317.
Pincus, G.(1969). “Bonded wood-concrete T-beams.” J. Struct. Div. ASCE, 95(10), 2265–2279.
United States Department of Agriculture Forest Service (USDA). (1992). “Timber bridges: Design, construction, inspection, and maintenance.” Rep. No. EM 7700-8, Washington, D.C.
Weaver, C. (2002). “Behavior of FRP-reinforced glulam-concrete composite bridge girders.” MS thesis, Dept. of Civil and Environmental Engineering, Univ. of Maine, Orono, Me.
Witmer, R. W., Manbeck, H. B., and Janowiak, J. J.(1999). “Partial composite action in hardwood glued-laminated T-beams.” J. Bridge Eng., 4(1), 23–29.
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Copyright © 2004 American Society of Civil Engineers.
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Received: Feb 8, 2002
Accepted: Apr 9, 2003
Published online: Jun 15, 2004
Published in print: Jul 2004
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