Steel and Composite Structures

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Design models for predicting the resistance of headed studs in profiled sheeting

  • Vigneri, Valentino (Faculty of Science, Technology & Communication, University of Luxembourg) ;
  • Hicks, Stephen J. (University of Warwick, School of Engineering) ;
  • Taras, Andreas (ETH Zurich, D-BAUG, Institute of Structural Engineering) ;
  • Odenbreit, Christoph (Faculty of Science, Technology & Communication, University of Luxembourg)
  • Received : 2021.10.20
  • Accepted : 2022.02.23
  • Published : 2022.03.10
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Abstract

This paper presents the results from reliability analyses of the current Eurocode 4 (EN 1994-1-1) and AISC 360-16 design models for predicting the resistance of headed stud shear connectors within profiled steel sheeting, when the ribs are oriented transverse to the supporting beam. For comparison purposes, the performance of the alternative "Luxembourg" and "Stuttgart" model were also considered. From an initial database of 611 push-out tests, 269 cases were included in the study, which ensured that the results were valid over a wide range of geometrical and material properties. It was found that the current EN 1994-1-1 design rules deliver a corrected partial safety factor γM* of around 2.0, which is significantly higher than the target value 1.25. Moreover, 179 tests fell within the domain of the concrete-related failure design equation. Notwithstanding this, the EN 1994-1-1 equations provide satisfactory results for re-entrant profiled sheeting. The AISC 360-16 design equation for steel failure covers 263 of the tests in the database and delivers 𝛾M*≈2.0. Conversely, whilst the alternative "Stuttgart" model provides an improvement over the current codes, only a corrected partial safety factor of 𝛾M*=1.47 is achieved. Finally, the alternative "Luxembourg" design model was found to deliver the required target value, with a corrected partial safety factor 𝛾M* between 1.21 and 1.28. Given the fact that the Luxembourg design model is the only model that achieved the target values required by EN 1990, it is recommended as a potential candidate for inclusion within the second generation of Eurocodes.

Keywords

Acknowledgement

Financial support for the first author was provided by ArcelorMittal Global R&D Long Products Luxembourg in the scope of the research project ShearCON under the grant agreement UL-E-AGR-0022-10-C. As Member and Convenor of Project Team CEN/TC250/SC4.T3 between 2015 and 2018, the second and fourth author, respectively acknowledge with thanks the financial support provided by the EU under Grant Agreement SA/CEN/GROW/EFTA/515/2014-02.

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