Seismic Behavior of Concrete Columns Reinforced with BFRP, GFRP, Steel, and Hybrid Steel–FRP Reinforcement
Publication: Journal of Composites for Construction
Volume 28, Issue 6
Abstract
Steel-reinforced concrete (RC) columns typically exhibit significant residual displacements and low postyield stiffness when subjected to seismic loads, which may complicate subsequent repairs. This paper investigated the effects of different reinforcement methods on the seismic performance of concrete columns by using glass fiber–reinforced polymer (GFRP) and basalt fiber–reinforced polymer (BFRP) bars. Five samples were subjected to low-cycle horizontal loading tests to compare the corresponding seismic performance indices. The results showed that fully FRP-reinforced concrete columns had a lower energy dissipation capacity and ductility coefficient than RC columns but had other clear advantages in terms of ultimate displacement and a postyield stiffness increase by 100%. Compared to RC columns, the concrete columns with half FRP bars exhibited comparable energy dissipation, greater ultimate displacements and ductility coefficients, and a 60% increase in postyield stiffness. Incorporating FRP bars significantly reduced the residual deformation of FRP-reinforced concrete columns compared to RC columns under the same loading cycle, enabling structural repairs and continued use after an earthquake.
Practical Applications
During the 2008 Wenchuan earthquake, many traditional reinforced concrete structures were severely damaged, causing significant economic losses and threatening lives and property. Related investigations verified that the deformation of reinforced concrete columns was the most serious under the same displacement level, and adding fiber-reinforced polymer materials greatly reduced the deformation of the concrete columns, which can improve the reparability of the structure after an earthquake. Additionally, the peak load-carrying capacity of fiber-reinforced polymer materials is similar to that of reinforced concrete columns, giving the former a certain application value. In the coastal areas of traditional reinforced concrete structures, because of corrosion, which leads to a significant reduction in the service life of the environment, it is proposed that the introduction of fiber-reinforced polymer materials with excellent corrosion resistance will largely improve the service life of the corrosive environment of the components while ensuring similar seismic performance.
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Data Availability Statement
All the data, models, or codes that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This work is financially supported by the Natural Science Foundation of Heilongjiang Province under Grant No. YQ2023E031, the National Natural Science Foundation of China (NSFC) under Grant No. 51708092, and the Postdoctoral Research Foundation of China under Grant No. 2018M631894.
Notation
The following symbols are used in this paper:
- A
- cross-sectional area of the top of the concrete column;
- +Di
- ith loading forward peak displacement;
- −Di
- ith loading reverse peak displacement;
- Du
- ultimate displacement;
- Dy
- yield displacement;
- compressive strength of the concrete;
- h
- spacing between horizontal feature points;
- Ki
- stiffness of the specimen;
- NG
- gravity load;
- nG
- axial pressure ratio;
- SABC + SCDA
- sum of the areas of the hysteresis loops;
- SOBE + SODF
- sum of the areas of triangles OBE and ODF;
- +Vi
- ith loading forward peak load;
- −Vi
- ith loading reverse peak load;
- µ
- coefficient of ductility;
- Ф
- curvature;
- εc
- feature point compressive strains;
- εt
- feature point tensile strains;
- ξeq
- equivalent viscosity coefficient; and
- ξeq
- SABC + SCDA/2π(SOBE + SODF).
References
Ali, M. A., and E. El-Salakawy. 2016. “Seismic performance of GFRP-reinforced concrete rectangular columns.” J. Compos. Constr. 20 (3): 04015074. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000637.
Cai, Z.-K., W. Yuan, Z. Wang, and S. T. Smith. 2021. “Seismic behavior of precast segmental bridge columns reinforced with hybrid FRP-steel bars.” Eng. Struct. 228: 111484. https://doi.org/10.1016/j.engstruct.2020.111484.
Christopoulos, C., S. Pampanin, and M. J. N. Priestley. 2003. “Performance-based seismic response of frame structures including residual deformations. Part I: Single-degree of freedom systems.” J. Earthquake Eng. 7 (1): 97–118.
Deng, Z., L. Gao, and X. Wang. 2017. “Experiment on seismic performance of concrete columns reinforced with GFRP bars.” China J. Highway Transp. 30 (10): 53–61.
Deng, Z., L. Gao, and X. Wang. 2018. “Glass fiber-reinforced polymer-reinforced rectangular concrete columns under simulated seismic loads.” J. Braz. Soc. Mech. Sci. Eng. 40 (2): 111. https://doi.org/10.1007/s40430-018-1041-8.
Gong, Y., J. Zhang, L. Jiang, and Y. Tu. 2010. “A seismic behavior of concrete columns reinforced with CFRP.” J. Cent. South Univ. 41 (4): 1506–1513.
Huang, J., D. Zhu, P. Gao, A. Zhou, and L. Dai. 2020. “Seismic performance of BFRP-reinforced low-strength concrete circular columns with high axial compression ratio.” J. Build. Mater. 23 (6): 1366–1373.
Japan Road Association. 2002. Specifications for highway bridges. V Seismic Design. JRA-2012. Tokyo, Japan: Japan Road Association.
Kawashima, K. 2000. “Seismic performance of RC bridge piers in Japan: An evaluation after the 1995 Hyogo-ken Nanbu earthquake.” Prog. Struct. Mater. Eng. 2 (1): 82–91. https://doi.org/10.1002/(SICI)1528-2716(200001/03)2:1%3C82::AID-PSE10%3E3.0.CO;2-C.
Liossatou, E., and M. N. Fardis. 2015. “Residual displacements of RC structures as SDOF systems.” Earthquake Eng. Struct. Dyn. 44 (5): 713–734. https://doi.org/10.1002/eqe.2483.
Manalo, A., B. Benmokrane, K.-T. Park, and D. Lutze. 2014. “Recent developments on FRP bars as internal reinforcement in concrete structures.” Concr. Aust. 40 (2): 46–56.
Ministry of Housing and Urban-Rural Development of the People's Republic of China. 2015. Specification for seismic test of buildings. JGJ/T 101-2015. Beijing: Ministry of Housing and Urban-Rural Development of the People's Republic of China.
Ministry of Transport of the People's Republic of China. 2020. Specifications for seismic design of highway bridges. JTG/T 2231-01-2020. Beijing: Ministry of Transport of the People's Republic of China.
Park, R. 1989. “Evaluation of ductility of structures and structural assemblages from laboratory testing.” Bull. N. Z. Soc. Earthquake Eng. 22 (3): 155–166. https://doi.org/10.5459/bnzsee.22.3.155-166.
Ren, Y., H. Wang, Z. Guan, and K. Yang. 2023. “Evaluation of the properties and applications of FRP bars and anchors: A review.” Rev. Adv. Mater. Sci. 62 (1): 20220287. https://doi.org/10.1515/rams-2022-0287.
Ruiz-García, J., and E. Miranda. 2006. “Residual displacement ratios for assessment of existing structures.” Earthquake Eng. Struct. Dyn. 35 (3): 315–336. https://doi.org/10.1002/eqe.523.
Shrestha, B., and H. Hao. 2016. “Parametric study of seismic performance of super-elastic shape memory alloy-reinforced bridge piers.” Struct. Infrastruct. Eng. 12 (9): 1076–1089. https://doi.org/10.1080/15732479.2015.1076856.
Song, R., S. Jiang, and H. Yu. 2015. “Experimental research of concrete columns reinforced with CFRP bars under horizontal cyclic loading test.” J. Logistical Eng. Univ. 31 (3): 26–31.
Su, C., X. Wang, L. Ding, and Z. Wu. 2023. “Seismic degradation behavior of steel-FRP composite bar reinforced concrete beams in marine environment based on experimental and numerical investigation.” Compos. Struct. 313: 116949. https://doi.org/10.1016/j.compstruct.2023.116949.
Sun, Z.-Y., G. Wu, Z.-S. Wu, and M. Zhang. 2011. “Seismic behavior of concrete columns reinforced by steel-FRP composite bars.” J. Compos. Constr. 15 (5): 696–706. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000199.
Sun, Z. Y., Y. Yang, W. H. Qin, S. T. Ren, and G. Wu. 2012. “Experimental study on flexural behavior of concrete beams reinforced by steel-fiber reinforced polymer composite bars.” J. Reinf. Plast. Compos. 31 (24): 1737–1745. https://doi.org/10.1177/0731684412456446.
Tavassoli, A., J. Liu, and S. Sheikh. 2015. “Glass fiber-reinforced polymer-reinforced circular columns under simulated seismic loads.” ACI Struct. J. 112 (1): 103–114.
Wang, X. 2016. “Study on seismic performance of concrete columns with mixed reinforcement of CFRP composite reinforcement and steel reinforcement.” Bachelor's degree, School of Civil Engineering,, Harbin Institute of Technology.
Wang, Y., G. Cai, Y. Li, D. Waldmann, A. Si Larbi, and K. D. Tsavdaridis. 2019. “Behavior of circular fiber-reinforced polymer–steel-confined concrete columns subjected to reversed cyclic loads: Experimental studies and finite-element analysis.” J. Struct. Eng. 145 (9): 04019085. https://doi.org/10.1061/(ASCE)ST.1943-541X.0002373.
Xiaosan, Y. 2019. “Evaluation and determination methods on yield point of structural components without obvious yield feature.” Earthquake Eng. Eng. Dyn. 39 (3): 143–150.
Yuan, F., M. Chen, and J. Pan. 2019. “Experimental study on seismic behaviours of hybrid FRP-steel-reinforced ECC-concrete composite columns.” Composites, Part B 176: 107272. https://doi.org/10.1016/j.compositesb.2019.107272.
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Published In
Journal of Composites for Construction
Volume 28 • Issue 6 • December 2024
Copyright
© 2024 American Society of Civil Engineers.
History
Received: Sep 4, 2023
Accepted: Aug 7, 2024
Published online: Sep 24, 2024
Published in print: Dec 1, 2024
Discussion open until: Feb 24, 2025
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