Yes / Steel concrete composite beams have been increasingly used in practice due to their advantages with respect to
their structural features and constructability. However, in conventional composite beam systems composite
action is applied via shear connectors welded at the top flange of the down-stand steel beam and embedded in the
concrete slabs, making it less favourable for the beam system to be disassembled and reused. This paper presents
a numerical study of a new composite beam system consisting of a cellular steel beam, metal deck flooring and
demountable shear connectors. According to the experimental study, this composite beam system made the
demounting, reassembly, and member reuse possible, and did not compromise the loading capacity. In the numerical
study presented in the paper, a finite element model was developed and validated against the results
obtained from the previous experimental study. The parametric study further examined the effects of concrete
strength, shear connector arrangements and asymmetry ratios of steel beam section to the load capacity of the
composite beam system. The analysis and comparison provided a deeper insight into the behaviour of this type of
shear connector. Through this numerical study, the structural merits of the composite beam system using
demountable shear connectors were highlighted. Finally, the mid-span plastic moment of the composite beam
was predicted using the direction method provided in SCI publications and compared with the
moment–deflection relationship obtained from FE modelling. / The research leading to these results is part of a joint project of the University of Bradford, the University of Luxemburg, the Technology University of Delft, the Steel Construction Institute, Tata Steel, Lindab S. A., BmS and AEC3 Ltd. The authors gratefully acknowledge the funding received from the European Commission: Research Fund for Coal and Steel (RFCS-2015, RPJ, 710040). In addition, deep appreciation to Mr. Stephen Robinson for his work done in the laboratory.
| Identifer | oai:union.ndltd.org:BRADFORD/oai:bradscholars.brad.ac.uk:10454/19904 |
| Date | 28 March 2023 |
| Creators | Dai, Xianghe, Yang, Jie, Zhou, Kan, Sheehan, Therese, Lam, Dennis |
| Source Sets | Bradford Scholars |
| Language | English |
| Detected Language | English |
| Type | Article, Published version |
| Rights | © 2023 The Author(s). Published by Elsevier Ltd on behalf of Institution of Structural Engineers. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/)., CC-BY |
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