Fatigue Behavior of Concrete-Filled Fiber-Reinforced Polymer Tubes
Publication: Journal of Composites for Construction
Volume 12, Issue 4
Abstract
To date, research on concrete-filled fiber-reinforced polymer (FRP) tubes (CFFT) has focused on the effect of static loads, simulated seismic loads, and long-term sustained loads. Dynamic fatigue behavior of CFFTs, on the other hand, has received little or no attention. This paper reports on an experimental study to evaluate damage accumulation, stiffness degradation, fatigue life, and residual bending strength of CFFT beams. A total of eight CFFT beams with four different types of FRP tube were tested under four point bending. Test parameters included reinforcement index, fiber architecture, load range, and end restraints. Fatigue performance of CFFT beams is clearly governed by characteristics of the FRP tube and its three phases of damage growth: matrix cracking, matrix delamination, and fiber rupture. Lower reinforcement index increases stiffness degradation and damage growth, and shortens fatigue life. End restraints, e.g., embedment of FRP tube in adjacent members, promote composite action, arrest slippage of concrete core, and enhance fatigue life of CFFT beams. It is suggested that a maximum load level of 25% of the static capacity be imposed for fatigue design of CFFTs. With proper design, CFFTs may withstand repeated traffic loading necessary for bridge girders.
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Acknowledgments
Support for this study was provided by the National Science Foundation through Faculty Early Career Award to the third writer. Additional support was provided by the Florida Department of Transportation. The experiments were carried out at the Constructed Facilities Laboratory of North Carolina State University. The writers are grateful to Dr. Rizkalla and Dr. Fam for providing one of their specimens for fatigue tests. The findings and opinions expressed here are those of the writers alone, and not necessarily the views of the sponsoring agencies.NSF
References
Ahmad, I. (2004). “Shear response and bending fatigue behavior of concrete-filled fiber reinforced polymer tubes.” Ph.D. thesis, North Carolina State Univ., Raleigh, N.C.
Barnes, R., and Mays, G. (1999). “Fatigue performance of concrete beams strengthened with CFRP plates.” J. Compos. Constr., 3(2), 63–72.
Deskovic, N., Meier, U., and Triantafillou, T. C. (1995). “Innovative design of FRP combined with concrete: Long-term behavior.” J. Struct. Eng., 121(7), 1079–1089.
Do, M. T., Chaallal, O., and Aïtcin, P. C. (1993). “Fatigue behavior of high-performance concrete.” J. Mater. Civ. Eng., 5(1), 96–111.
El-Tawil, S., Ogunc, C., Okeil, A., and Shahawy, M. (2001). “Static and fatigue analyses of RC beams strengthened with CFRP laminates.” J. Compos. Constr., 5(4), 258–267.
Fam, A., and Rizkalla, S. (2002). “Flexural behavior of concrete-filled fiber-reinforced polymer circular tubes.” J. Compos. Constr., 6(2), 123–132.
Heffernan, P., and Erki, M. (2004). “Fatigue behavior of reinforced concrete beams strengthened with carbon fiber reinforced plastic laminates.” J. Compos. Constr., 8(2), 132–140.
Hilsdorf, H., and Kesler, C. (1966). “Fatigue strength of concrete under varying flexural stresses.” J. Am. Concr. Inst., 38(10), 1060–1075.
Karbhari, V. M., Seible, F., Burgueno, R., Davol, A., Wernli, M., and Zhao, L. (2000). “Structural characterization of fiber-reinforced composite short- and medium-span bridge systems.” Appl. Compos. Mater., 7(2–3), 151–182.
Mahfuz, H., Maniruzzaman, M., Krishnagopalan, J., Haque, A., Ismail, M., and Jeelani, S. (1995). “Effects of stress ratio on fatigue life of carbon-carbon composites.” Theor. Appl. Fract. Mech., 24(1), 21–31.
Mirmiran, A., and Shahawy, M. (2003). “Composite pile: A successful drive.” Concr. Int., 25(3), 89–94.
Mirmiran, A., Samaan, M., Cabrera, S., and Shahawy, M. (1998). “Design, manufacture and testing of a new hybrid column.” Constr. Build. Mater., 12(1), 39–49.
Mirmiran, A., Shahawy, M., El Khoury, C., and Naguib, W. (2000). “Large beam-column tests on concrete-filled composite tubes.” ACI Struct. J., 97(2), 268–276.
Naguib, W., and Mirmiran, A. (2002). “Flexural creep tests and modeling of concrete-filled fiber reinforced polymer tubes.” J. Compos. Constr., 6(4), 272–279.
Pando, M., Fam, A., Lesko, J., and Filz, G. (2003). “New bridge piers using load bearing concrete-filled GFRP tubes.” Field application of FRP reinforcement: Case studies, SP-215, ACI, 181–200.
Papakonstantinou, C. G., Petrou, M. F., and Harries, K. A. (2001). “Fatigue behavior of RC beams strengthened with GFRP sheets.” J. Compos. Constr., 5(4), 246–253.
Seible, F., Karbhari, V. M., and Burgueno, R. (1999). “Kings stormwater channel and I-5/Gilman Bridge.” Struct. Eng. Int. (IABSE, Zurich, Switzerland), 9(4), 250–253.
Shahawy, M., and Beitleman, T. (1999). “Static and fatigue performance of RC beams strengthened with CFRP laminates.” J. Struct. Eng., 125(6), 613–621.
Shao, Y., and Mirmiran, A. (2005). “Experimental investigation of cyclic behavior of concrete-filled FRP tubes.” J. Compos. Constr., 9(3), 263–273.
Zhao, L., Burgueno, R., Rovere, H., Seible, F., and Karbhari, V. M. (2000). “Preliminary evaluation of the hybrid tube bridge system.” Structural systems research project TR-2000/4, Dept. of Structural Engineering, Univ. of California, San Diego, Calif.
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Information
Published In
Journal of Composites for Construction
Volume 12 • Issue 4 • August 2008
Pages: 478 - 487
Copyright
© 2008 ASCE.
History
Received: Apr 18, 2007
Accepted: Jul 26, 2007
Published online: Aug 1, 2008
Published in print: Aug 2008
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