Experimental and Numerical Evaluation of a Welded Demountable Shear Connector through Horizontal Pushout Tests
Publication: Journal of Structural Engineering
Volume 148, Issue 2
Abstract
A novel welded demountable shear connector for sustainable steel-concrete composite structures is proposed. The proposed connector consists of a grout-filled steel tube bolted to a compatible partially threaded stud, which is welded on a steel section. This connector allows for an easy deconstruction at the end of the service life of a building, promoting the reuse of both the concrete slabs and the steel sections. This paper presents the experimental evaluation of the structural behavior of the proposed connector using a horizontal pushout test arrangement. The effects of various parameters, including the tube thickness, the presence of grout infill, and the concrete slab compressive strength, were assessed. A nonlinear finite element model was also calibrated against the experimental results, and the validated numerical model was used to extend the validity of the experimental results and to perform further parametric studies. The experimental and numerical results show that the tested connectors have similar stiffness, but higher shear resistance and slip capacity compared with traditional welded shear studs and can be classified as ductile according to Eurocode 4.
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Data Availability Statement
Some or all data, models, or codes that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
The authors acknowledge with appreciation the financial support of the Engineering and Physical Science Research Council of the UK, Grant EP/P004253/1, and the Horizon 2020–Marie Skłodowska-Curie Individual Fellowship of European Commission (REUSE: 793787). Hanson Cement & Packed Products Ltd. have generously donated some raw materials for the specimens. The first author thanks Emeritus Professor Roger P. Johnson of the University of Warwick for valuable technical discussions. The authors are grateful to the technicians at the Heavy Structures Lab at Heriot-Watt University, Edinburgh, UK. Any opinions, findings, and conclusions expressed in this article are those of the authors and do not reflect the views of the sponsors and supporters.
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Published In
Journal of Structural Engineering
Volume 148 • Issue 2 • February 2022
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Jun 15, 2021
Accepted: Oct 15, 2021
Published online: Nov 26, 2021
Published in print: Feb 1, 2022
Discussion open until: Apr 26, 2022
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- Jun He, Ahmed S. H. Suwaed, George Vasdravellis, Sihao Wang, Standard Pushout Tests and Design Rules for a Bolted–Welded Hybrid Demountable Shear Connector, Journal of Structural Engineering, 10.1061/(ASCE)ST.1943-541X.0003404, 148, 8, (2022).
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