Published on: June 2026
PERFORMANCE EVALUATION OF CFST COLUMNS UNDER BIAXIAL LOADING WITH AND WITHOUT SHEAR CONNECTORS
Sathe Pooja R Aghav Pooja Aghav Pravin Aher Arjun Adsare Gayatri Doke Ganesh
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Abstract
Concrete Filled Steel Tube (CFST) columns are advanced composite structural members widely used in modern construction because of their high strength, stiffness, ductility, and ease of construction. These columns consist of hollow steel sections filled with concrete, combining the compressive strength of concrete and tensile strength of steel. The steel tube acts as permanent formwork and provides confinement to the concrete core, while the concrete delays inward buckling of the steel tube. Due to these advantages, CFST columns are increasingly used in multistory buildings, bridges, industrial structures, and earthquake-resistant construction.
This research paper presents an experimental investigation on the axial load carrying capacity of circular and square CFST columns with and without shear connectors. Different grades of concrete such as M20, M30, and M40 were considered to evaluate the influence of concrete strength. The test specimens were subjected to axial compression loading using a Universal Testing Machine (UTM). The obtained experimental results were compared with predictions from ACI 318, AISC-LRFD, and Eurocode 4 design standards. The study concludes that higher concrete grades and the use of shear connectors significantly improve the load carrying capacity and ductility of CFST columns.
Keywords- CFST columns, composite construction, axial load, steel tube, shear connectors, concrete confinement, Eurocode 4.
How to Cite this Paper
R, S. P., Pooja, A., Pravin, A., Arjun, A., Gayatri, A. & Ganesh, D. (2026). Performance Evaluation of CFST Columns under Biaxial Loading with and without Shear Connectors. International Journal of Creative and Open Research in Engineering and Management, <i>02</i>(6). https://doi.org/10.55041/ijcope.v2i6.210
R, Sathe, et al.. "Performance Evaluation of CFST Columns under Biaxial Loading with and without Shear Connectors." International Journal of Creative and Open Research in Engineering and Management, vol. 02, no. 6, 2026, pp. . doi:https://doi.org/10.55041/ijcope.v2i6.210.
R, Sathe,Aghav Pooja,Aghav Pravin,Aher Arjun,Adsare Gayatri, and Doke Ganesh. "Performance Evaluation of CFST Columns under Biaxial Loading with and without Shear Connectors." International Journal of Creative and Open Research in Engineering and Management 02, no. 6 (2026). https://doi.org/https://doi.org/10.55041/ijcope.v2i6.210.
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References
- ACI 318 – Building Code Requirements for Structural Concrete.
- AISC LRFD Specifications for Composite Columns.
- Eurocode 4 – Design of Composite Steel and Concrete Structures.
- Research papers on CFST behavior under axial compression.
- Standard textbooks on steel-concrete composite construction.
- G.N. Sreekant et al., Load Bearing Capability of CFST Columns.
- Georgiou Giakoumelis a, Dennis Lam b “Axial capacity of circular concrete-filled tube columns” Journal of Constructional Steel Research 60 (2004) 1049–1068.
- Rolando Chacón “Circular Concrete-Filled Tubular Columns: State of the Art Oriented to the Vulnerability Assessment “The open civil Engg, journal 9(suppl.1, M4) 249-259.
- Manojkumar V. Chitawadagi Mattur C.Narasimhan, S.M. Kulkarni “Axial strength of circular concrete-filled steel tube columns” Journal of Constructional Steel Research 66 (2010) 1248_1260.
- Zhong Tao, Han Lin-Hai, Wang Dong-Ye. “Strength and ductility of stiffened Thin-walled hollow steel structural stub columns filled with concrete”. Thin-Walled Structures 2008; 46:1113_28
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- •Published on: Jun 17 2026
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