Theoretical and Experimental Studies of the Internal Force Transfer Mechanism of Perfobond Rib Shear Connector Group
Publication: Journal of Bridge Engineering
Volume 22, Issue 2
Abstract
Perfobond rib shear connector (PBL) is capable of transferring large internal force between steel and concrete components. It has been widely used in composite bridges as a key load-transferring component. In this paper, the load-transfer mechanism of the PBL shear connector group is investigated theoretically and experimentally. An analytical model was developed based on load-slip characteristics of a single shear connector and load-deformation compatibility of a perforated steel plate and concrete component. The model was validated through full-scale connection loading experiments. Test results indicate that the applied load is unevenly distributed to multiple layers of PBL shear connectors in a connector group in the elastic stage, and the load becomes more evenly distributed as plastic deformation of the connectors takes place. The presented analytical model provides an efficient way for analyzing and designing a PBL shear connector group. The analytical results indicate that increasing the number of connectors in heavily loaded layers helps effectively reduce the load shared by each connector in these layers under design loads.
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Acknowledgments
Funding for this research was provided by the Fundamental Research Funds for the Central Universities (Grant Number 2682014CX078) and the National Science and Technology Support Program of China (Grant Number 2011BAG07B03). This paper is also partly supported by the National Natural Science Foundation of China (Grant Numbers 50908192, 51178394, 51408506, and 51578455).
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Published In
Journal of Bridge Engineering
Volume 22 • Issue 2 • February 2017
Copyright
© 2016 American Society of Civil Engineers.
History
Received: May 3, 2016
Accepted: Aug 4, 2016
Published online: Sep 13, 2016
Published in print: Feb 1, 2017
Discussion open until: Feb 13, 2017
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