Investigation of Circular Hollow Concrete Columns Reinforced with GFRP Bars and Spirals

Article

Ahmad, Afaq, Bahrami, Alireza, Alajarmeh, Omar, Chairman, Nida and Yaqub, Muhammad. 2023. "Investigation of Circular Hollow Concrete Columns Reinforced with GFRP Bars and Spirals." Buildings. 13 (4). https://doi.org/10.3390/buildings13041056
Article Title

Investigation of Circular Hollow Concrete Columns Reinforced with GFRP Bars and Spirals

ERA Journal ID210216
Article CategoryArticle
AuthorsAhmad, Afaq, Bahrami, Alireza, Alajarmeh, Omar, Chairman, Nida and Yaqub, Muhammad
Journal TitleBuildings
Journal Citation13 (4)
Article Number1056
Number of Pages26
Year2023
PublisherMDPI AG
Place of PublicationSwitzerland
ISSN2075-5309
Digital Object Identifier (DOI)https://doi.org/10.3390/buildings13041056
Web Address (URL)https://www.mdpi.com/2075-5309/13/4/1056
AbstractGlass fiber-reinforced polymer (GFRP) reinforcements are useful alternatives to traditional steel bars in concrete structures, particularly in vertical structural elements such as columns, as they are less prone to corrosion, and impart increasing strength and endurance of buildings. There is limited research on the finite element analysis (FEA) of the structural behavior of hollow glass fiber-reinforced polymer reinforced concrete (GFRPRC) columns. The hollow portion can be used for the service duct and for reducing the self-weight of the members. Numerical analysis of the compressive response of circular hollow concrete columns reinforced with GFRP bars and spirals is performed in this study. This article aims to investigate the axial behavior of hollow GFRP concrete columns and compare it with that of solid steel reinforced concrete (RC) columns as well as hollow steel RC columns. The Abaqus software is used to construct finite element models. After calibration of modeling using an experimental test result as a control model, a parametric study is conducted. The columns with the same geometry, loading, and boundary conditions are analyzed in the parametric study. It is resulted that the hollow GFRP concrete columns provide a greater confinement effect than the solid steel RC columns. The average variation in the ultimate axial load-carrying capacities of the experimental results, from that of the FEA values, is noted to be only 3.87%, while the average difference in the corresponding deformations is 7.08%. Moreover, the hollow GFRP concrete columns possess greater axial load and deformation capacities compared with the solid steel RC columns. © 2023 by the authors.
KeywordsAbaqus; finite element analysis; glass fiber-reinforced polymer bars; hollow reinforced concrete column; spirals; axial loading
ANZSRC Field of Research 2020400510. Structural engineering
Byline AffiliationsUniversity of Engineering and Technology, Pakistan
University of Gävle, Sweden
Centre for Future Materials
University of Westminster, United Kingdom
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