Steel and Composite Structures

  • 제27권5호
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  • Pages.545-554
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  • 2018
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Structural performance of cold-formed steel composite beams

  • Dar, M. Adil (Department of Civil Engineering, Indian Institute of Technology Delhi) ;
  • Subramanian, N. ;
  • Anbarasu, M. (Department of Civil Engineering, Government College of Engineering Salem) ;
  • Dar, A.R. (Department of Civil Engineering, National Institute of Technology Srinagar) ;
  • Lim, James B.P. (Department of Civil & Environmental Engineering, University of Auckland)
  • 투고 : 2017.04.13
  • 심사 : 2018.04.23
  • 발행 : 2018.06.10
⟨ 이전 논문 다음 논문 ⟩

초록

This study presents a novel method of improving the strength and stiffness of cold-formed steel (CFS) beams. Flexural members are primary members in most of the structures. Hence, there is an urgent need in the CFS industry to look beyond the conventional CFS beam sections and develop novel techniques to address the severe local buckling problems that exist in CFS flexural members. The primary objective of this study was to develop new CFS composite beam sections with improved structural performance and economy. This paper presents an experimental study conducted on different CFS composite beams with simply supported end conditions under four point loading. Material properties and geometric imperfections of the models were measured. The test strengths of the models are compared with the design strengths predicted by using Australian/New Zealand Standard for cold-formed steel structures. Furthermore, to ensure high precision testing, a special testing rig was also developed for testing of long span beams. The description of test models, testing rig features and test results are presented here. For better interpretation of results, a comparison of the test results with a hot rolled section is also presented. The test results have shown that the proposed CFS composite beams are promising both in terms of better structural performance as well as economy.

키워드

참고문헌

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피인용 문헌

  1. Behaviour of partly stiffened cold-formed steel built-up beams: Experimental investigation and numerical validation vol.22, pp.1, 2018, https://doi.org/10.1177/1369433218782767
  2. Flexural Strength of cold-formed steel built-up composite beams with rectangular compression flanges vol.34, pp.2, 2018, https://doi.org/10.12989/scs.2020.34.2.171
  3. Efficient cross-sectional profiling of built up CFS beams for improved flexural performance vol.34, pp.3, 2018, https://doi.org/10.12989/scs.2020.34.3.333
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  5. Investigation of cold-formed steel open channel element under gravity loads vol.1136, pp.1, 2018, https://doi.org/10.1088/1757-899x/1136/1/012025
  6. Axial capacity of back-to-back built-up cold-formed stainless steel unlipped channels-Numerical investigation and parametric study vol.40, pp.5, 2018, https://doi.org/10.12989/scs.2021.40.5.761
  7. Development of an efficient steel truss system using CFS sections: a comparative study with a hot-rolled steel truss vol.12, pp.6, 2018, https://doi.org/10.1108/ijsi-06-2020-0060