Use of CFRP to Maintain Composite Action for Continuous Steel–Concrete Composite Girders
Publication: Journal of Composites for Construction
Volume 20, Issue 4
Abstract
The loss of composite action at the negative moment region for a continuous composite girder reduces the girder’s strength and stiffness. This paper presents an experimental investigation into the use of carbon fiber–reinforced polymer (CFRP) to maintain the composite action at the negative moment region of continuous composite girders. This is achieved by bonding CFRP sheets to the top of a concrete slab at the negative moment region. Six two-span continuous composite girders were tested. CFRP sheet thickness was varied to assess its effect on girder behavior. The girders were designed to have full composite action between the concrete slab and the steel girder. Moment capacity at the positive and negative moment regions was evaluated experimentally and theoretically. A plastic analysis was conducted to evaluate the ultimate capacity of the girders. Finite-element modeling evaluated girder performance numerically. The experimental results confirmed the effectiveness of CFRP sheets in maintaining composite action at the negative moment region and in preventing crack initiation in a concrete slab under service load. The use of CFRP improved the strength and stiffness of the continuous composite girders. The plastic analysis safely estimated the girders’ ultimate capacity. The developed finite-element model yielded satisfactory results.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
Financial support for this work, provided by King Fahd University of Petroleum and Minerals and the Deanship of Scientific Research under project number IN121053, is gratefully acknowledged.
References
ABAQUS version 6.13-1 [Computer software]. Dassault Systèmes, Waltham, MA.
ACI (American Concrete Institute) and ISO. (2008). “Building code requirements for structural concrete and commentary.” ACI 318-08, Farmington Hills, MI.
AISC. (2005). Manual, 13th Ed., Chicago.
Aravind, N., Samanta, A. K., Roy, D. S., and Thanikal, J. V. (2013). “Retrofitting of reinforced concrete beams using fibre reinforced polymer (FRP) composites: A review.” J. Urban Environ. Eng., 7(1), 164–175.
Basu, P. K., Sharif, A. M., and Ahmed, N. U. (1987a). “Partially prestressed composite beams. II.” J. Struct. Eng., 1926–1938.
Basu, P. K., Sharif, A. M., and Ahmed, N. U. (1987b). “Partially prestressed continuous composite beams. I.” J. Struct. Eng., 1909–1925.
Bilotta, A. (2010). “Behavior of FRP-to-concrete interface: Theoretical models and experimental results.” Ph.D. dissertation, Universta degli Studi di Naploi Federico II, Italy.
Chen, S., Wang, X., and Jia, Y. (2009). “A comparative study of continuous steel-concrete composite beams prestressed with external tendons: Experimental investigation.” J. Constr. Steel Res., 65(7), 1480–1489.
Galal, K., Seif ElDin, H. M., and Tirca, L. (2011). “Flexural performance of steel girders retrofitted using CFRP materials.” J. Compos. Constr., 265–276.
Kadhim, M. M. A. (2012). “Effect of CFRP plate length strengthening continuous steel beam.” Constr. Build. Mater., 28(1), 648–652.
Lee, J., and Fenves, G. L. (1998). “Plastic-damage model for cyclic loading of concrete structures.” J. Eng. Mech., 892–900.
Lubliner, J., Oliver, J., Oller, S., and Onate, E. (1989). “A plastic-damage model for concrete.” Int. J. Solids Struct., 25(3), 299–326.
Siddiqui, N. A. (2010). “Experimental investigation of RC beams strengthened with externally bonded FRP composites.” Lat. Am. J. Solids Struct., 6(4), 343–362.
Tavakkolizadeh, M., and Saadatmanesh, H. (2003). “Strengthening of steel-concrete composite girders using carbon fiber reinforced polymers sheets.” J. Struct. Eng., 30–40.
Topkaya, C., Yura, J. A., and Williamson, E. B. (2004). “Composite shear stud strength at early concrete ages.” J. Struct. Eng., 952–960.
Information & Authors
Information
Published In
Copyright
© 2015 American Society of Civil Engineers.
History
Received: May 6, 2015
Accepted: Sep 21, 2015
Published online: Dec 30, 2015
Discussion open until: May 30, 2016
Published in print: Aug 1, 2016
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.