Finite Element Analysis of the Flexural Performance of Hybrid (Steel-BFRP) RC Beams under Repeated Loading: Verification and Parametric Investigation
محتوى المقالة الرئيسي
الملخص
The corrosion of steel bars in reinforced concrete structures subjected to harsh environments remains a significant challenge. Fiber-reinforced polymer (FRP) composites have been investigated as potential alternatives to conventional steel reinforcement. While basalt fiber-reinforced polymer (BFRP) bars exhibit high tensile strength, durability, and sustainability, they are characterized by linear elastic behavior and a brittle failure mode. Hybrid reinforcements of steel and BFRP bars combine the ductility of steel with the corrosion resistance of BFRP. This study presents the development and validation of a three-dimensional nonlinear finite element (FE) model in ABAQUS to simulate the flexural behavior of high-strength concrete (HSC) beams reinforced with a hybrid (steel/BFRP) system under repeated loading. Six beam specimens with a compressive strength of 86.5 MPa were modeled and validated against experimental results. The FE model predicted ultimate load capacity with an average error of 4.97%, while deflection predictions showed an average error of 17.44%. The beams failed when the concrete cracked before the BFRP bars reached their full tensile capacity. A parametric study investigated the effects of increasing the concrete compressive strength from 86.5 MPa to 120 MPa on BFRP stress utilization, ultimate load capacity, and failure mode. Numerical results predict that increasing the concrete strength to 120 MPa significantly enhances structural performance, suggesting a shift in failure mode as indicated by the model. These findings provide valuable insights into optimizing hybrid reinforcement systems for improved structural efficiency and durability.
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Abed, F., Al-Mimar, M., and Ahmed, S., 2021. Performance of BFRP RC beams using high strength concrete. Composites Part C: Open Access, 4, 100107. https://doi.org/10.1016/j.jcomc.2021.100107
Abdulrahman, B.Q., 2025. Computational challenges and experimental validation of the flexural behaviour of RC beams using the nonlinear 3D finite element analysis by the damage plasticity model in Abaqus: A guidance study. Russian Journal of Building Construction and Architecture, 65(1), pp. 7–20. https://doi.org/10.36622/2542-0526.2025.65.1.001
ACI Committee 211, 2008. Guide for Selecting Proportions for High-Strength Concrete with Portland Cement and Fly Ash (ACI 211.4R-08). American Concrete Institute.
ACI Committee 440, 2015. Guide for the Design and Construction of Concrete Reinforced with FRP Bars (ACI 440.1R-15). American Concrete Institute.
ACI Committee 440, 2022. Building Code Requirements for Structural Concrete Reinforced with Glass Fiber-Reinforced Polymer (GFRP) Bars (ACI 440.11-22) and Commentary. American Concrete Institute.
Alkhteeb, L., and Dawood, M.B., 2025. Structural behavior of recycled aggregate concrete continuous beam with hybrid reinforcement under monotonic and repeated Load. Revue des Composites et des Materiaux Avances, 35(3), pp. 437–450. https://doi.org/10.18280/rcma.350305
Al-Shaarbaf, I.A.S., Ali, A.S., and Abdulridha, A.J., 2017. Experimental and numerical investigation of high strength reinforced concrete deep beams with web openings under repeated loading. Al-Nahrain Journal for Engineering Sciences, 20(2), pp. 311–325. https://api.semanticscholar.org/CorpusID:114738693
Al-Zahrani, M.M., Mostafa, O.M., Rahman, M.K., and Najmuddin, S.K., 2023. Experimental and numerical investigations of BFRP-Reinforced normal and high strength concrete beams. In: Ilki, A., Çavunt, D., and Çavunt, Y.S. (eds). Building for the Future: Durable, Sustainable, Resilient. fib Symposium 2023. Lecture Notes in Civil Engineering, 349. Springer, Cham. https://doi.org/10.1007/978-3-031-32519-9_117
Assi, D., 2025. Non-linear finite element analysis for the verification and parametric study of reinforced concrete beams strengthened in compression zone to improve ductility by using ABAQUS. Engineering and Technology Journal, 43, pp. 401–410. https://doi.org/10.30684/etj.2025.157317.1912
ASTM C1240, 2015. Standard Specification for Silica Fume Used in Cementitious Mixtures. American Society for Testing and Materials.
ASTM C494/C494M, 2019. Standard Specification for Chemical Admixtures for Concrete. American Society for Testing and Materials.
Aziz, H.M, and Hassan, F.H., 2025. Structural Behavior of High-Strength Concrete Beams with Hybrid Reinforcement. MSc. Thesis, Department of Civil Engineering, College of Engineering, Al-Mustansiriyah University, Baghdad, Iraq.
Bažant, Z.P., and Jirásek, M., 2002. Nonlocal integral formulations of plasticity and damage: Survey of progress. Journal of Engineering Mechanics, 128(11), pp. 1119–1149. https://doi.org/10.1061/(ASCE)0733-9399(2002)128:11(1119)
Elbawab, Y., Elbawab, Y., El Zoughby, Z., ElKadi, O., AbouZeid, M. and Sayed-Ahmed, E., 2025. Flexural testing of Steel-, GFRP-, BFRP-, and hybrid reinforced beams. Polymers. https://doi.org/10.3390/polym17152027
Flayyih, A.S.Z., Dawood, M.B., and Habeeb, G.M., 2020. Flexural Behavior of Reinforced Concrete Composite Continuous T-Beam with Hybrid Reinforcement under Repeated Load. PhD. Thesis, Department of Civil Engineering, College of Engineering, University of Babylon, Babylon, Iraq.
Hollaway, L.C., and Teng, J.G., 2008. Strengthening and Rehabilitation of Civil Infrastructures Using Fibre-Reinforced Polymer (FRP) Composites. Woodhead Publishing.
Hordijk, D.A., 1991. Local Approach to Fatigue of Concrete. PhD. Thesis, Delft University of Technology, Delft, The Netherlands.
Ineia, A., Pol, W.D.O., Braun, J.C.A. and da Silva Lopes, L., 2021. Barras de fibra de vidro, uma alternativa inovadora e suas potencialidades: revisão bibliográfica. Tecno-Lógica, 25(2), pp. 243-251. https://dx.doi.org/10.17058/tecnolog.v25i2.16214
Kadhim, S. J., and Hassan, H. F., 2026. Experimental study of flexural behavior of high‐strength concrete beams with hybrid reinforcement under repeated loading. Structural Concrete. https://doi.org/10.1002/suco.70700
Kossakowski, P. G., and Wciślik, W., 2022. Fiber-reinforced polymer composites in the construction of bridges: Opportunities, problems and challenges. Fibers, 10(4). https://doi.org/10.3390/fib10040037
Lu, Z.-H., and Zhao, Y.-G., 2010. Empirical stress-strain model for unconfined high-strength concrete under uniaxial compression. Journal of Materials in Civil Engineering, 22, pp. 1181–1186. https://doi.org/10.1061/(ASCE)MT.1943-5533.0000095
Maheswaran, J., and Chellapandian, M., 2023. Quantitative assessment of strengthening strategies and design recommendations for the repair of corrosion-damaged reinforced concrete members. Buildings, 13(4), 1080. https://doi.org/10.3390/buildings13041080
Megahed, K., 2025. Predicting flexural strength of hybrid FRP-steel reinforced beams using symbolic regression and ML techniques. Scientific Reports. https://doi.org/10.1038/s41598-025-05775-7
Mohamed, O. A., Al Hawat, W., and Keshawarz, M. S., 2021. Durability and mechanical properties of concrete reinforced with basalt fiber-reinforced polymer (BFRP) bars: Towards sustainable infrastructure. Polymers, 13(9), 1402. https://doi.org/10.3390/polym13091402
Nguyen, P.D., Dang, V.H., and Vu, N.A., 2020. Performance of concrete beams reinforced with various ratios of hybrid GFRP/Steel bars. Civil Engineering Journal, 6, pp. 1652–1669. https://doi.org/10.28991/cej-2020-03091572
Ortiz, J.D., Dolati, S.S.K., Malla, P., Nanni, A., and Mehrabi, A., 2023. FRP-reinforced/strengthened concrete: State-of-the-art review on durability and mechanical effects. Materials, 16(5), 1990. https://doi.org/10.3390/ma16051990
Oyshi, M. T., Azad, H. K. M., and Rahman, M. Z., 2023. Durability of FRP bars under varying environmental factors and loading conditions. In: FRP Composites in Civil Engineering. https://doi.org/10.1016/B978-0-323-96020-5.00216-8
Rasheed, H.A., Nayal, R., and Melhem, H., 2004. Response prediction of concrete beams reinforced with FRP bars. Composite Structures, 65, pp. 193–204. https://doi.org/10.1016/j.compstruct.2003.10.016
Ren, Y., Wang, H., and Guan, Z. Z., 2023. Evaluation of the properties and applications of FRP bars and anchors: A review. Reviews on Advanced Materials Science, 22, 20220287. https://doi.org/10.1515/rams-2022-0287
Salem, M., and Issa, M.S., 2023. Nonlinear finite element analysis of high and ultra-high strength concrete beams reinforced with FRP bars. HBRC Journal, 19, pp. 15–31. https://doi.org/10.1080/16874048.2023.2170765
Tatar, J., and Milev, S., 2021. Durability of externally bonded fiber-reinforced polymer composites in concrete structures: A critical review. Polymers, 13(5), 765. https://doi.org/10.3390/polym13050765
Thomas, M., 2013. Supplementary cementing materials in concrete. CRC Press, pp. 1–181. https://doi.org/10.1201/b14493
Tran, H., Nguyen-Thoi, T., and Dinh, H.B., 2025. State-of-the-art review of studies on the flexural behavior and design of FRP-Reinforced concrete beams. Materials, 18(14), 3295. https://doi.org/10.3390/ma18143295
Xie, Y., Zhuo, K., Rashid, K., Deng, J., and Zhang, F., 2022. Flexural performance of BFRP bar reinforced high-strength concrete beam. In: Ilki, A., Ispir, M., and Inci, P. (eds). 10th International Conference on FRP Composites in Civil Engineering (CICE 2021). Lecture Notes in Civil Engineering, 198. Springer, Cham. https://doi.org/10.1007/978-3-030-
88166-5_9
Yan, D., and Wang, Q., 2025. Numerical simulation on structural behavior of FRP profile-concrete hybrid beams with bolt shear connector. Structural Concrete, 26, pp. 929–951. https://doi.org/10.1002/suco.202400877
Yu, T., Teng, J.G., Wong, Y.L., and Dong, S.L., 2010. Finite element modeling of confined concrete-ii: plastic-damage model. Engineering Structures, 32, pp. 680–691. https://doi.org/10.1016/j.engstruct.2009.11.013
Yun, X., and Gardner, L., 2017. Stress-strain curves for hot-rolled steels. Journal of Constructional Steel Research, 133, pp. 36–46. https://doi.org/10.1016/j.jcsr.2017.01.024