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<p>Cold Formed Steel(CFS)–concrete composite structures are increasingly recognised in the literature as an efficient and sustainable solution, offering lightweight, economical, and high-performance characteristics for modern construction applications. The study focuses on the advancements in CFS-concrete composite members, particularly in composite beams, highlighting their structural behaviour, design considerations, and performance benefits. The interaction between CFS sections and concrete slabs through mechanical shear connectors is examined to understand composite action and load transfer mechanisms. The paper reviews experimental investigations, analytical models, and numerical studies that evaluate flexural behaviour, shear resistance, deflection characteristics, and failure modes of composite beams. Special attention is given to the influence of shear connector type, spacing, and material properties on overall structural performance. Design challenges associated with local buckling, interface slip, and construction practicality are also discussed. The findings indicate that CFS–concrete composite systems offer significant structural efficiency while reducing material usage and construction time. The study concludes that with proper design provisions and code development, CFS–concrete composite structures can serve as a reliable and sustainable alternative to traditional structural systems.&#xa0;</p>

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A comprehensive review on advances in cold-formed steel–concrete composite structures and their shear-connection technologies

  • 期刊论文

  • 发表日期：

    2026年5月29日

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  • Prathmesh A. Powar,
  • P. B. Salgar

摘要

Cold Formed Steel(CFS)–concrete composite structures are increasingly recognised in the literature as an efficient and sustainable solution, offering lightweight, economical, and high-performance characteristics for modern construction applications. The study focuses on the advancements in CFS-concrete composite members, particularly in composite beams, highlighting their structural behaviour, design considerations, and performance benefits. The interaction between CFS sections and concrete slabs through mechanical shear connectors is examined to understand composite action and load transfer mechanisms. The paper reviews experimental investigations, analytical models, and numerical studies that evaluate flexural behaviour, shear resistance, deflection characteristics, and failure modes of composite beams. Special attention is given to the influence of shear connector type, spacing, and material properties on overall structural performance. Design challenges associated with local buckling, interface slip, and construction practicality are also discussed. The findings indicate that CFS–concrete composite systems offer significant structural efficiency while reducing material usage and construction time. The study concludes that with proper design provisions and code development, CFS–concrete composite structures can serve as a reliable and sustainable alternative to traditional structural systems.