Browse > Article
http://dx.doi.org/10.12989/sem.2016.59.4.775

Flexural performance of FRP-reinforced concrete encased steel composite beams  

Kara, Ilker Fatih (Civil Engineering Department, Bursa Technical University)
Publication Information
Structural Engineering and Mechanics / v.59, no.4, 2016 , pp. 775-793 More about this Journal
Abstract
This paper presents a numerical method for estimating the curvature, deflection and moment capacity of FRP-reinforced concrete encased steel composite beams (FRP-RCS). A sectional analysis is first carried out to predict the moment-curvature relationship from which beam deflection and moment capacity are then calculated. Comparisons between theoretical and experimental results of tests conducted elsewhere show that the proposed numerical technique can accurately predict moment capacity and deflection of FRP-RCS composite beam. The numerical results also indicated that beam ductility and stiffness are improved when encased steel is added to FRP reinforced concrete beams. ACI, ISIS and Bischoff models for deflection prediction compared well at low load, however, significantly underestimated the experimental results for high load levels.
Keywords
fiber reinforced polymers; deflection; ductility; concrete; encased steel beam;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Aiello, M.A. and Ombres, L. (2002), "Structural performances of concrete beams with hybrid (fiber-reinforced polymer-steel) reinforcements", J. Compos. Constr., 6(2), 133-140.   DOI
2 American Concrete Institute (ACI) (2006), "Guide for the design and construction of concrete reinforced with FRP bars", ACI 440.1R-06, Farmington Hills, MI.
3 Bischoff, P.H. (2007), "Deflection calculation of FRP reinforced concrete beams based on modifications to the existing Branson equation". J. Compos. Constr., 11(1), 4-14.   DOI
4 Canadian Standards Association (CSA) (2002), "Design and construction of building components with fibrereinforced polymers", CSA Standard S806-02, Rexdale, Ont., Canada.
5 CEB-FIP (1990), "Model code for concrete structures, Comite Euro-International du Beton", Bulletin, 213/214.
6 Chen, C.C., Weng, C., Lin, I.M. and Li, J.M. (1999), "Seismic behaviour and strength of concrete encased steel stub columns and beam-columns", Report No. MOIS 881012-1, Architecture and Building Research Institute. (in Chinese)
7 Cheung, M.M.S. and Tsang, T.K.C. (2010), "Behaviour of concrete beams reinforced with hybrid FRP composite rebar", Adv. Struct. Eng., 13(1), 81-93.   DOI
8 Dundar, C., Tokgoz, S., Tanrikulu, A.K. and Baran, T. (2008), "Behavior of reinforced and concrete-encased composite columns subjected to biaxial bending and axial load. Building and Environment", Constr. Build. Mater., 43, 1109-20.
9 El-Helou, R.G. and Aboutaha, R.S. (2015), "Analysis of rectangular hybrid steel-GFRP reinforced concrete beam columns", Comput. Concrete, 16(2), 245-260.   DOI
10 El-Tawil, S. and Deierlein, G.G. (1999), "Strength and ductility of concrete encased composite columns", J. Struct. Eng., 125(9), 1009-19.   DOI
11 Etman, E.E. (2011), "Innovative hybrid reinforcement for flexural members", J. Compos. Constr., 15(2), 2-8.   DOI
12 Gholami, M., Mohd Sam, A.R., Marsono, A.K., Tahir, M.M. and Faridmehr, I. (2016), "Performance of steel beams strengthened with pultruded CFRP plate under various exposures", Steel Comp. Struct., 20(5), 999-1022.   DOI
13 Harris, H.G., Somboonsong, W. and Ko, F.K. (1998), "New ductile hybrid FRP reinforcing bar for concrete structures", J. Compos. Constr., 2(1), 28-37.   DOI
14 Mohamed, A.S. (2013), "Flexural behavior and design steel-GFRP reinforced concrete beams", ACI Mater. J., 10(6), 677-85.
15 Lau, D. and Pam, H.J. (2010), "Experimental study of reinforced concrete beams", Eng. Struct., 32, 3857-3865.   DOI
16 Leung, H.Y. and Balendran, R.V. (2003), "Flexural behaviour of concrete beams internally reinforced with GFRP rods and steel rebars", Struct. Surv., 21(4), 146-157.   DOI
17 Li, X., Lv H. and Zhou S. (2012), "Flexural behavior of GFRP-reinforced concrete encased steel composite beams", Constr. Build. Mater., 28, 255-262.   DOI
18 Nanni, A., Henneke M.J. and Okamoto, T. (1994), "Behavior of concrete beams with hybrid reinforcement", Constr. Build. Mater., 8(2),89-95.   DOI
19 Ricles, J.M. and Paboojian, S.D. (1994), "Seismic performance of steel-encased composite columns", J. Struct. Eng., 120(8), 2474-2494.   DOI
20 Tan, K.H. (1997, "Behaviour of hybrid FRP-steel reinforced concrete beams", Proc., 3rd Int. Symp. on Non-Metallic (FRP) Reinforcement for Concrete Structures (FRPRCS-3), Japan Concrete Institute, Sapporo, 487-494.
21 Weng, C.C., Yen, S.I. and Jiang, M.H. (2002), "Experimental study on shear splitting failure of full-scale composite concrete encased steel beams", J. Struct. Eng., 128(9), 1186-94.   DOI
22 Wenjun, Q., Zhang, X. and Huang, H. (2009), "Flexural behavior of concrete beams reinforced with hybrid (GFRP and steel) bars", J. Compos. Constr., 13(5), 350-359.   DOI
23 Wu, G., Sun, Z.Y., Wu, Z.S. and Luo, Y.B. (2012), "Mechanical Properties of Steel-FRP Composite Bars and Performance of SFCB Reinforced Concrete Structures", Adv. Struct. Eng., 15(4), 625-635.   DOI
24 Yoon, Y.S., Yang, J.M., Min, K.H. and Shin, H.O. (2011), "Flexural strength and deflection characteristics of high strength concrete beams with hybrid FRP and steel bar reinforcement", 10th International symposium on fiber-reinforced polymer reinforcement for concrete structures 2011, FRPRCS-10, Tampa (FL, United States)/38800 Country Club Drive, Farmington Hills, MI 48331, American Concrete Institute, US.