Strengthening of Non-Prismatic Concrete Bridge Piers Using Carbon, Glass, and Aramid FRP Under Lateral Loading

Authors

  • Reza Roygar * Structural Supervisor, Member of the Construction Engineering Organization (CEO) of Mazandaran Province, Iran.
  • Rahmat Madandoust Department of Civil Engineering, Faculty of Engineering, University of Guilan, Rasht, Iran.

https://doi.org/10.48314/jcase.v3i1.78

Abstract

Bridges are vital lifelines, and their seismic performance is critical. Many existing Reinforced Concrete (RC) bridges, especially those with non-prismatic columns, suffer from insufficient lateral strength and ductility due to outdated design codes or environmental degradation. This study investigates the effectiveness of three types of Fiber Reinforced Polymer (FRP) — Carbon Fiber Reinforced Polymer (CFRP), Glass Fiber Reinforced Polymer (GFRP), and Aramid Fiber Reinforced Polymer (AFRP) — in strengthening non-prismatic RC bridge piers under lateral loading. Using the nonlinear finite element method in ABAQUS (pushover analysis), four models were analyzed: Unstrengthened, and strengthened with CFRP, AFRP, and GFRP. Results show that CFRP wrapping provided the highest increase in ultimate strength (67%), energy dissipation (65%), and stiffness (34%), albeit with a 21% reduction in ductility. AFRP and GFRP also showed significant improvements. The study confirms that FRP wrapping is a highly effective retrofitting technique for non-prismatic bridge piers, with CFRP being the most efficient.        

Keywords:

Non-prismatic bridge pier, Fiber reinforced polymer, Carbon fiber reinforced polymer, Glass fiber reinforced polymer, Aramid fiber reinforced polymer, Lateral loading, Seismic retrofit, Pushover analysis

References

  1. [1] Zhao, R., Zheng, K., Wei, X., Jia, H., Li, X., Zhang, Q., … & Yu, C. (2022). State-of-the-art and annual progress of bridge engineering in 2021. Advances in bridge engineering, 3(1), 29. https://doi.org/10.1186/s43251-022-00070-1
  2. [2] Ahmad, M. W., Rizwan, M., & Tahir, M. F. (2025). Retrofitting of seismically deficient RC bridge pier using HSP concrete jacket and FRP rebars. Engineering science and technology, an international journal, 70, 102146. https://doi.org/10.1016/j.jestch.2025.102146
  3. [3] Afsar Dizaj, E., Salami, M. R., & Kashani, M. M. (2022). Nonlinear dynamic behaviour and seismic fragility analysis of irregular multi-span RC bridges. Structures, 44, 1730–1750. https://doi.org/10.1016/j.istruc.2022.08.112
  4. [4] Miano, A., Iacovazzo, P., Mele, A., Di Ludovico, M., & Prota, A. (2024). Seismic fragility of circular piers in simply supported RC bridges: A proposal for capacity assessment. Engineering structures, 302, 117426. https://doi.org/10.1016/j.engstruct.2023.117426
  5. [5] Hu, W., Li, Y., & Yuan, H. (2020). Review of experimental studies on application of FRP for strengthening of bridge structures. Advances in materials science and engineering, 2020(1), 8682163. https://doi.org/10.1155/2020/8682163
  6. [6] Wang, Q., Zhu, H., Zhang, B., Tong, Y., Teng, F., & Su, W. (2020). Anchorage systems for reinforced concrete structures strengthened with fiber-reinforced polymer composites: State-of-the-art review. Journal of reinforced plastics and composites, 39(9–10), 327–344. https://doi.org/10.1177/0731684420905010
  7. [7] Megahed, F. A., Seleem, M. H., Badawy, A. A. M., & Sharaky, I. A. (2023). The flexural response of RC beams strengthened by EB/NSM techniques using FRP and metal materials: A state-of-the-art review. Innovative infrastructure solutions, 8(11), 289. https://doi.org/10.1007/s41062-023-01245-z
  8. [8] Jahami, A., & Issa, C. A. (2024). An updated review on the effect of CFRP on flexural performance of reinforced concrete beams. International journal of concrete structures and materials, 18(1), 14. https://doi.org/10.1186/s40069-023-00651-y
  9. [9] To, Q. B., Lee, K., Cuong, N. H., & Shin, J. (2024). Development of machine learning based seismic retrofit scheme for AFRP retrofitted RC column. Structures, 69, 107279. https://doi.org/10.1016/j.istruc.2024.107279
  10. [10] Ye, H., Zhou, H., Peng, H., Ye, J., & Bu, Z. (2025). Experimental study on improving the strength and ductility of prefabricated concrete bridge piers using GFRP tube confinement. Buildings, 15(17), 1–32. https://doi.org/10.3390/buildings15172981
  11. [11] Hammad, M., Bahrami, A., Khokhar, S. A., & Khushnood, R. A. (2024). A state-of-the-art review on structural strengthening techniques with FRPs: Effectiveness, shortcomings, and future research directions. Materials, 17(6), 1–38. https://doi.org/10.3390/ma17061408

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Published

2025-03-28

Issue

Vol. 3 No. 1 (2026): Journal of Civil Aspects and Structural Engineering

Section

Articles

How to Cite

Roygar, R., & Madandoust, R. (2025). Strengthening of Non-Prismatic Concrete Bridge Piers Using Carbon, Glass, and Aramid FRP Under Lateral Loading. Journal of Civil Aspects and Structural Engineering, 3(1), 66-75. https://doi.org/10.48314/jcase.v3i1.78

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