Browse > Article
http://dx.doi.org/10.12989/cac.2017.20.4.391

Mechanical performances of concrete beams with hybrid usage of steel and FRP tension reinforcement  

Bui, Linh V.H. (Department of Civil Engineering, Chulalongkorn University)
Stitmannaithum, Boonchai (Department of Civil Engineering, Chulalongkorn University)
Ueda, Tamon (Laboratory of Engineering for Maintenance System, Hokkaido University)
Publication Information
Computers and Concrete / v.20, no.4, 2017 , pp. 391-407 More about this Journal
Abstract
Fiber reinforced polymer (FRP) bars have been recently used to reinforce concrete members in flexure due to their high tensile strength and especially in corrosive environments to improve the durability of concrete structures. However, FRPs have a low modulus of elasticity and a linear elastic behavior up to rupture, thus reinforced concrete (RC) components with such materials would exhibit a less ductility in comparison with steel reinforcement at the similar members. There were several studies showed the behavior of concrete beams with the hybrid combination of steel and FRP longitudinal reinforcement by adopting the experimental and numerical programs. The current study presents a numerical and analytical investigation based on the data of previous researches. Three-dimensional (3D) finite element (FE) models of beams by using ANSYS are built and investigated. In addition, this study also discusses on the design methods for hybrid FRP-steel beams in terms of ultimate moment capacity, load-deflection response, crack width, and ductility. The effects of the reinforcement ratio, concrete compressive strength, arrangement of reinforcement, and the length of FRP bars on the mechanical performance of hybrid beams are considered as a parametric study by means of FE method. The results obtained from this study are compared and verified with the experimental and numerical data of the literature. This study provides insight into the mechanical performances of hybrid FRP-steel RC beams, builds the reliable FE models which can be used to predict the structural behavior of hybrid RC beams, offers a rational design method together with an useful database to evaluate the ductility for concrete beams with the combination of FRP and steel reinforcement, and motivates the further development in the future research by applying parametric study.
Keywords
FRP; hybrid combination; finite element modeling; reinforced concrete;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
1 Pang, L., Qu, P., Zhu, P. and Xu, J. (2015), "Design propositions for hybrid FRP-steel reinforced concrete beams", J. Compos. Constr., 20(4), 1-9.
2 Qin, R., Zhou, A. and Lau, D. (2017), "Effect of reinforcement ratio on the flexural performance of hybrid FRP reinforced concrete beams", Compos. Part B: Eng., 108, 200-209.   DOI
3 Qu, W., 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
4 Tan, K.H. (1997), "Behavior of hybrid FRP-steel reinforced concrete beams", Proceedings of the 3rd International Symposium on Non-Metallic (FRP) Reinforcement for Concrete Structures (FRPRCS-3), Japan Concrete Institute, Tokyo, 487-494.
5 Vijay, P.V. and GangaRao, H.V.S. (1996), "A unified limit state approach using deformability factors in concrete beams reinforced with GFRP bars", Proceedings of the 4th Conference on Materials Conference, Materials for The New Millennium.
6 Yoo, D.Y. and Banthia, N. (2015), "Numerical simulation on structural behavior of UHPFRC beams with steel and GFRP bars", Comput. Concrete, 16(5), 759-774.   DOI
7 Yoo, D.Y., Banthia, N. and Yoon, Y.S. (2016), "Flexural behavior of ultra-high-performance fiber-reinforced concrete beams reinforced with GFRP and steel rebars", Eng. Struct., 111, 246-262.   DOI
8 Zhang, D., Wang, Q. and Dong, J. (2016), "Simulation study on CFRP strengthened reinforced concrete beam under four-point bending", Comput. Concrete, 17(3), 407-421.   DOI
9 Godat, A., Labossiere, P., Neale, K.W. and Chaallal, O. (2012), "Behavior of RC members strengthened in shear with EB FRP: Assessment of models and FE simulation approaches", Comput. Struct., 92-93, 269-282.   DOI
10 Ge, W., Zhang, J., Cao, D. and Tu, Y. (2015), "Flexural behaviors of hybrid concrete beams reinforced with BFRP bars and steel bars", Constr. Build. Mater., 87, 28-37.   DOI
11 Hawileh, R.A. (2015), "Finite element modeling of reinforced concrete beams with a hybrid combination of steel and aramid reinforcement", Mater. Des., 65, 831-839.   DOI
12 Hind, M.K., Mustafa, O., Talha, E. and Abdolbaqi, M.K. (2016), "Flexural behavior of concrete beams reinforced with different types of fibers", Comput. Concrete, 18(5), 999-1018.   DOI
13 Hognestad, E., Hanson, N.W. and McHenry, D. (1955), "Concrete stress distribution in ultimate strength design", ACI J. Proc., 52(12), 455-479.
14 Kara, I.F., Ashour, A.F. and Koroglu, M.A. (2015), "Flexural behavior of hybrid FRP/steel reinforced concrete beams", Compos. Struct., 129, 111-121.   DOI
15 ACI 440.1R-06 (2006), Guide for the Design and Construction of Structural Concrete Reinforced with FRP Bars, American Concrete Institute, Detroit, U.S.A.
16 ACI 440R-96 (1996b), State of the Art Report on Fiber Reinforced Plastic Reinforcement for Concrete Structures, American Concrete Institute, Detroit, U.S.A.
17 Kara, I.F. (2016), "Flexural performance of FRP-reinforced concrete encased steel composite beams", Struct. Eng. Mech., 59(4), 775-793.   DOI
18 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
19 Lau, D. and Pam, H.J. (2010), "Experimental study of hybrid FRP reinforced concrete beams", Eng. Struct., 32(12), 3857-3865.   DOI
20 Oller, E., Mari, A., Bairan, J.A. and Cladera, A. (2015), "Shear design of reinforced concrete beams with FRP longitudinal and transverse reinforcement", Compos. Part B: Eng., 74, 104-122.   DOI
21 ANSYS-Release Version 15.0 (2013), A Finite Element Computer Software and User Manual for Nonlinear Structural Analysis, Canonsburg, U.S.A.
22 Bencardino, F., Condello, A. and Ombres L. (2016), "Numerical and analytical modeling of concrete beams with steel, FRP and hybrid FRP-steel reinforcements", Compos. Struct., 140, 53-65.   DOI
23 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
24 Branson, D.E. (1977), Deformation of Concrete Structures, McGraw-Hill, New York, U.S.A.
25 Faza, S.S. and GangaRao, H.V.S. (1993), Theoretical and Experimental Correlation of Behaviour of Concrete Beams Reinforced with Fiber Plastic Rebars, Fiber Reinforced Plastic Reinforcement for Concrete Structures, SP-138, American Concrete Institute, Detroit, U.S.A.