Khalafalla, M. (2024). Numerical analysis of CFRP-Confined Circular Concrete Columns Under Axial Loading. JES. Journal of Engineering Sciences, 52(5), 233-249. doi: 10.21608/jesaun.2024.289228.1335
Mohamed Khalafalla. "Numerical analysis of CFRP-Confined Circular Concrete Columns Under Axial Loading". JES. Journal of Engineering Sciences, 52, 5, 2024, 233-249. doi: 10.21608/jesaun.2024.289228.1335
Khalafalla, M. (2024). 'Numerical analysis of CFRP-Confined Circular Concrete Columns Under Axial Loading', JES. Journal of Engineering Sciences, 52(5), pp. 233-249. doi: 10.21608/jesaun.2024.289228.1335
Khalafalla, M. Numerical analysis of CFRP-Confined Circular Concrete Columns Under Axial Loading. JES. Journal of Engineering Sciences, 2024; 52(5): 233-249. doi: 10.21608/jesaun.2024.289228.1335
Numerical analysis of CFRP-Confined Circular Concrete Columns Under Axial Loading
Assistant Professor-Construction Research Institute, NWRC-Egypt
Abstract
The axial compression performance of circular columns strengthened with carbon fiber-reinforced polymer (CFRP) was investigated using numerical simulation. The study's objective was to validate a finite element model to match results of experimental testing, to ensure consistent failure modes and load-displacement profiles. The investigation explored the impact of various parameters, including concrete strength, CFRP layer numbers, slenderness ratio, steel reinforcement ratio, and cross-sectional area, on CFRP column behavior. The analysis revealed valuable insights into stress-strain relationships and ultimate load-bearing capacity. This study provides vital information for structure engineering practices and design strategies in the industry, highlighting the significance to utilize CFRP technology to enhance structural performance, especially the consistent stress distribution on the concrete core. To understand the mechanical response of CFRP circular concrete columns, engineers can optimize design and construction techniques to create more efficient and durable structures elements, ultimately to improve public safety and to reduce maintenance processes.
[1] L.H. Han, W. Li, R. Bjorhovde, Developments and advanced applications of concrete-filled steel tubular (CFST) structures: members, Journal of Constructional Steel Research 100, (2014) 211–228. http://dx.doi.org/10.1016/j.jcsr.2014.04.016
[2] L. C. Hollaway, and J. G. Teng. 2008. Strengthening and rehabilitation of civil infrastructures using fibre-reinforced polymer (FRP) composites. (2008), Hardback ISBN: 9781845694487, eBook ISBN: 9781845694890, Netherlands: Elsevier.
[3] L. Lam, and J. G. Teng. “Design-oriented stress–strain model for FRP-confined concrete.” Construction and Building Materials, (2003), 471–489. https://doi.org/10.1016/S0950-0618(03)00045-X
[4] J. G. Teng, G. Lin, and T. Yu. 2015. “Analysis-oriented stress-strain model for concrete under combined FRP-steel confinement. (2014), Journal Composite Construction.: 04014084 (1-14).
[7] M.N.S. Hadi, W. Wang, M.N. Sheikh, Axial compressive behavior of GFRP tube reinforced concrete columns, Construction and Building Materials, (2015), 81, 198–207. http://dx.doi.org/10.1016/j.conbuildmat.2015.02.025
[8] Bernat Csuka, and Laszlo P. Kollár. “FRP-confined circular columns subjected to eccentric loading. Journal of Reinforced Plastics and Composites, (2011), 30 (14): 1167–1178. https://doi.org/10.1177/0731684410397844
[9] Ghali, K., S. Rizkalla, M. Kassem, T. Fawzy, and M. Mahmoud.2003. “FRP-confined circular columns under small eccentric loading.” In Proc., 5th Alexandria Int. Conf. on Structural and Geotechnical Engineering, 20–22. Alexandria, Egypt: Alexandria University.
[10] Muhammad N.S. Hadi, and Ida Bagus Rai Widiarsa.. “Axial and flexural performance of square RC columns wrapped with CFRP under eccentric loading.” journal of composites for construction. (2012), 16 (6): 640–649. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000301
[11] M.N.S. Hadi. “The behavior of FRP wrapped HSC behavior under different eccentric loads.” Composite Structures, (2005), 78 (4): 560–566. doi: 10.1016/j.compstruct.2005.11.018
[12] D. Y Wang, Z. Y. Wang, S. T. Smith, and T. Yu. “Size effect on axial stress-strain behavior of CFRP-confined square concrete columns.” Construction and Building Materials, (2016), 118: 116–126. https://dx.doi.org/10.1016/j.conbuildmat.2016.04.158
[13] Concrete Society 2012. Design guidance for strengthening concrete structures using fiber composite materials: Refiber of a Concrete Society Working Party. 3rd ed. Technical Rep. No. 55. Camberley, UK: Concrete Society.
[14] Alper Ilki1, Onder Peker, Emre Karamuk, Cem Demir, and Nahit Kumbasar. “FRP Retrofit of Low and Medium Strength Circular and Rectangular Reinforced Concrete Columns”. journal of material in civil engineering, FEB-2008, pp 169-188.
[15] DOI: 10.1061/(ASCE)0899-1561(2008)20:2(169)
[16] Zhenyu Wang, Daiyu Wang, Scott T. Smith, Dagang Lu. “Experimental testing and analytical modeling of CFRP-confined large circular RC columns subjected to cyclic axial compression” Engineering Structures, (2012), 40, 64–74.
[20] Zhong Tao, Zhi-Bin Wang, Qing Yu, Finite element modeling of concrete-filled steel stub columns under axial compression. Journal of Constructional Steel Research, (2013), 89, 121–131. http://dx.doi.org/10.1016/j.jcsr.2013.07.001
[21] Ali Khajeh Samani, Mario M. Attard. A stress–strain model for uniaxial and confined concrete under compression. Engineering Structures, (2012), 41, 335–349. http://dx.doi.org/10.1016/j.engstruct.2012.03.027
[22] Baris Binici, An analytical model for stress–strain behavior of confined concrete. Engineering Structures, (2005), 27 (7), 1040–1051. Doi :10.1016/j.engstruct.2005.03.002
[23] Najwa F. Hany, Elie G. Hantouche, Mohamed H. Harajli, Finite element modeling of FRP-confined concrete using modified concrete damaged plasticity. Engineering Structures, (2016), 125, 1–14. http://dx.doi.org/10.1016/j.engstruct.2016.06.047
[24] Yan Xiao1, Wenhui He, and Kang-kyu Choi. Confined concrete-filled tubular columns. Journal of Structural Engineering, (2005), 131 (3), 488–497. DOI: 10.1061/(ASCE)0733-9445(2005)131:3(488)
[25] J.B. Mander, M.J.N. Priestley, and R. Park, “Theoretical stress-strain model for confined concrete”, Journal of Structural Engineering. (1988), 114 (8), 1804-1825.