Numerical Investigation of Concrete Filled Steel Tubular Beams

Authors

  • Rahul R Department of Civil Engineering, TKM College of Engineering, Kollam, Kerala , APJ Abdul Kalam Technological University, Kerala Author
  • Rekha Ambi Department of Civil Engineering, TKM College of Engineering, Kollam, Kerala , APJ Abdul Kalam Technological University, Kerala Author
  • Raji R Department of Civil Engineering, Younus College of Engineering and Technology, Kollam, Kerala , APJ Abdul Kalam Technological University, Kerala Author

DOI:

https://doi.org/10.21467/proceedings.7.8.9

Keywords:

CFST, ANSYS, concrete

Abstract

Concrete-filled steel tubular (CFST) structure offers numerous structural benefits, and has been widely used in Civil Engineering structures. CFST’s advantages over RCC in terms of load bearing, ductility, and flexural strength, make it a promising option in structural applications. The concrete-filled steel tubular structure can be treated as an alternative system to the steel or the reinforced concrete system. With the rapid development of research and application of concrete filled steel tubular structures all over the world in the past decades, the scope of “concrete-filled steel tube” has been extended greatly by researchers and engineers. Numerical investigation on the performance of CFST beams by varying the shape (Rectangular, Square), grade of infilled concrete (M25, M30), and the thickness of steel tube (8mm, 10mm, 12mm) using ANSYS software are conducted in the present study. Rectangular cross-sections provided significantly higher flexural rigidity compared to square cross-sections, making them more suitable for applications requiring higher stiffness. Higher concrete grade improved flexural rigidity, but the improvement is relatively small. Increasing thickness of steel tube improved flexural rigidity, but the relative benefit of using higher-grade concrete diminished as thickness increases.

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Published

2025-11-27

Issue

Vol. 7 No. 8 (2025): Proceedings of the National Conference on Emerging Trends and Innovation (NCETI-25)

Section

Articles

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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

How to Cite

[1]
Rahul R, R. Ambi, and Raji R, “Numerical Investigation of Concrete Filled Steel Tubular Beams”, AIJR Proc., vol. 7, no. 8, pp. 74–79, Nov. 2025, doi: 10.21467/proceedings.7.8.9.