Experimental Study on Impact Behavior of Stud Shear Connectors between Concrete Slab and Steel Beam
Publication: Journal of Structural Engineering
Volume 144, Issue 2
Abstract
This paper deals with the shear behavior of steel stud connectors between a concrete slab and steel beam under static and impact loading. An experimental program involving four static and nine impact pushout tests was designed and carried out according to the descriptions in related specification. The failure modes and the time history of impact load and slippage displacement as well as the shear strength of stud connectors are presented and investigated. It is found from static tests that the shear capacity of stud connectors reasonably met the corresponding requirements in a related specification, while the dynamic shear capacities of the connectors were improved by 33–63% compared with the static results. Based on the dynamic responses, the shear mechanism of the steel stud shear connectors under impact loading is also examined, and the failure process can be divided into three typical stages. Furthermore, based on the equations given in some existing guidelines, a design proposal is developed to accurately predict the shear capacity of stud connectors under impact loading, where the strain-rate effect is considered according to the recommendations given in a published report for the concrete strength and in a published journal paper for the steel strength under impact loading. The testing results can provide essential data for future analytical and design-oriented study of composite beam with shear stud connectors under extreme loading conditions.
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Acknowledgments
The financial support of the National Natural Science Foundation projects (51438010, 51078139, and 51408212) is gratefully acknowledged for the research described in this paper. The authors would also like to thank the support of the Program for New Century Excellent Talents in University (NCET-11-0123). Additionally, the authors are grateful to the support with the experimental work at the Center for Integrated Protection Research of Engineering Structures (CIPRES), as well as Ministry of Education Key Laboratory of Building Safety and Efficiency in Hunan University.
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Published In
Journal of Structural Engineering
Volume 144 • Issue 2 • February 2018
Copyright
©2017 American Society of Civil Engineers.
History
Received: Sep 10, 2016
Accepted: Jul 14, 2017
Published online: Nov 28, 2017
Published in print: Feb 1, 2018
Discussion open until: Apr 28, 2018
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