Experimental and Numerical Investigation of Flexural Behavior in Steel–Concrete Composite Beams with Varying Design Parameters

DOI

10.2991/978-94-6463-936-0_7How to use a DOI?

Keywords

Composite beams; Deflection; Strain; ANSYS; FEA

Abstract

Steel–concrete composite beams have gained popularity in modern construction due to their enhanced strength and stiffness resulting from the effective interaction between steel and concrete. By combining steel and concrete, these beams utilize the tensile strength of steel and the compressive strength of concrete, making them well-suited for bridges, multi-storey buildings, and a wide range of industrial structures. This study investigates the flexural behavior of two composite beams using both experimental and numerical methods. The experimental setup involved Two-point loading on beams with a 2000 mm span. Each composite beam consisted of a steel I-section at the bottom, a profiled steel sheet above, and concrete cast over the sheet. Shear studs were used to connect the concrete and steel, enabling effective composite action. One beam featured a smaller I-section and narrower breadth, with a moderate concrete grade and fewer shear connectors. The other beam incorporated a larger I-section, wider breadth, higher concrete grade, and increased number of shear connectors. Results showed that the first beam exhibited higher initial stiffness followed by a sudden drop in load capacity, indicating brittle failure. In contrast, the second beam demonstrated a broader load-sustaining region, with ~20.5% higher load and ~84.6% greater deflection than the first beam. The load–strain response confirmed more extensive yielding in the steel I-section of the second beam, suggesting better material utilization under loading. A finite element model developed in ANSYS effectively simulated the behavior of both beams and showed good agreement with the experimental findings.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - S. Arya
AU  - P. Seena
AU  - Anjali Baburaj
PY  - 2025
DA  - 2025/12/29
TI  - Experimental and Numerical Investigation of Flexural Behavior in Steel–Concrete Composite Beams with Varying Design Parameters
BT  - Proceedings of the International Conference on Civil Engineering and Architecture for Sustainable Infrastructure Development and Environment (CEASIDE 2025)
PB  - Atlantis Press
SP  - 92
EP  - 100
SN  - 3005-155X
UR  - https://doi.org/10.2991/978-94-6463-936-0_7
DO  - 10.2991/978-94-6463-936-0_7
ID  - Arya2025
ER  -