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Cold-Formed Steel Built-Up I-Beam with the Trapezoidal Corrugated Web: Tests and Numerical Simulation

Cold-Formed Steel Built-Up I-Beam with the Trapezoidal Corrugated Web: Tests and Numerical... The use of cold-formed steel (CFS) sections as the primary load-carrying members in residential and industrial buildings is rising. Different forms of cross sections are adopted for flexural members. This article presents a detailed study on the flexural performance of CFS built-up flexural members with corrugated web. The influence of different parameters, such as the aspect ratio and angle of corrugation, towards evaluating the appropriateness of the current design methods in the design of cold-formed steel built-up I-beam with the trapezoidal corrugated web was assessed. Twenty-eight simply supported beam specimens under monotonically applied four-point bending were studied. A nonlinear finite element analysis (FEA) was also conducted by using ANSYS software, and the numerical models were validated against the test results. The FEA results were in close agreement with that of the experiment. Further, the experimental as well as the numerical flexural strengths of specimens were compared with the design strengths predicted by using North American Specifications (AISI S100-2007) and Australian/New Zealand standards (AS/NZ: 4600-2005) for cold-formed steel structures. The current design specifications were assessed by conducting a reliability analysis. The comparison of the results shows that the corrugation angle and aspect ratio have a significant influence on the flexural capacity of beams. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of The Institution of Engineers (India): Series A Springer Journals

Cold-Formed Steel Built-Up I-Beam with the Trapezoidal Corrugated Web: Tests and Numerical Simulation

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Publisher
Springer Journals
Copyright
Copyright © The Institution of Engineers (India) 2021
ISSN
2250-2149
eISSN
2250-2157
DOI
10.1007/s40030-021-00571-8
Publisher site
See Article on Publisher Site

Abstract

The use of cold-formed steel (CFS) sections as the primary load-carrying members in residential and industrial buildings is rising. Different forms of cross sections are adopted for flexural members. This article presents a detailed study on the flexural performance of CFS built-up flexural members with corrugated web. The influence of different parameters, such as the aspect ratio and angle of corrugation, towards evaluating the appropriateness of the current design methods in the design of cold-formed steel built-up I-beam with the trapezoidal corrugated web was assessed. Twenty-eight simply supported beam specimens under monotonically applied four-point bending were studied. A nonlinear finite element analysis (FEA) was also conducted by using ANSYS software, and the numerical models were validated against the test results. The FEA results were in close agreement with that of the experiment. Further, the experimental as well as the numerical flexural strengths of specimens were compared with the design strengths predicted by using North American Specifications (AISI S100-2007) and Australian/New Zealand standards (AS/NZ: 4600-2005) for cold-formed steel structures. The current design specifications were assessed by conducting a reliability analysis. The comparison of the results shows that the corrugation angle and aspect ratio have a significant influence on the flexural capacity of beams.

Journal

Journal of The Institution of Engineers (India): Series ASpringer Journals

Published: Dec 1, 2021

Keywords: Aspect ratio; Cold-formed steel beams; Corrugation angle; Lipped I-section; Trapezoidal corrugation

References