Structural Engineering and Mechanics

  • 제74권3호
  • /
  • Pages.381-394
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  • 2020
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
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Behavior of CFS built-up battened columns: Parametric study and design recommendations

  • Vijayanand, S (Department of Civil Engineering, Kongu Engineering College) ;
  • Anbarasu, M (Department of Civil Engineering, Government College of Engineering)
  • 투고 : 2019.11.05
  • 심사 : 2019.12.12
  • 발행 : 2020.05.10
⟨ 이전 논문 다음 논문 ⟩

초록

The structural performance of cold-formed steel (CFS) built-up battened columns were numerically investigated in this paper. The built-up column sections were formed by connecting two-lipped channels back-to-back, with a regular spacing of battens plates, and have been investigated in the current study. Finite element models were validated with the test results reported by the authors in the companion paper. Using the validated models, the parametric study was extended, covering a wider range of overall slenderness to assess the accuracy of the current design rules in predicting the design strengths of the CFS built-up battened columns. The parameters viz., overall slenderness, different geometries, plate slenderness (b/t ratio) and yield stress were considered for this study. In total, a total of 228 finite element models were analyzed and the results obtained were compared with current design strength predicted by Effective Width Method of AISI Specifications (AISI S100:2016) and European specifications (EN1993-1-3:2006). The parametric study results indicated that the current design rules are limited in predicting the accuracy of the design strengths of CFS built-up battened columns. Therefore, a design equation was proposed for the AISI and EC3 specifications to predict the reliable design strength of the CFS Built-up battened columns and was also verified by the reliability analysis.

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피인용 문헌

  1. Parametric study and Improved design guidelines of CFS battened built-up columns vol.40, pp.5, 2020, https://doi.org/10.12989/scs.2021.40.5.733
  2. Cold-formed steel battened built-up columns: Experimental behaviour and verification of different design rules developed vol.25, pp.2, 2022, https://doi.org/10.1177/13694332211048006