Shear Behavior of Y-Shaped Perfobond Rib Shear Connector with UHPC Grout
Publication: Journal of Structural Engineering
Volume 150, Issue 9
Abstract
To improve shear capacity, as well as reduce on-site casting and steel consumption, a novel Y-shaped perfobond rib (Y-PBL) shear connector with ultra-high-performance concrete (UHPC) grout was proposed. The shear behavior of the Y-PBL shear connector was investigated by six groups of pushout specimens. Their failure modes, load–slip curves, load–separation curves, strain analysis, and shear transfer mechanisms were discussed. Subsequently, finite-element analysis (FEA) models were established to study the effect of parameters on the shear behavior of the Y-PBL shear connector, as well as to compare the shear capacity contributions with straight-shaped PBL (S-PBL) shear connectors. Analytical models were proposed to predict the shear capacity of the Y-PBL shear connector. The results reveal that the proposed Y-PBL shear connector has superior shear capacity and stiffness. The contribution of the perforating rebar is minor compared with the end-bearing effect of UHPC. The analytical predictions agree well with the experimental and FEA results. This study can be used to guide the design and application of the Y-PBL shear connector in steel-concrete composite bridges.
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Data Availability Statement
All data that support the findings of this study are available from the corresponding author upon reasonable request, including the experimental data (load and displacement) and FEA models presented in this paper.
Acknowledgments
This work was funded by the National Natural Science Foundation of China (NSFC) (Grant Nos. 52338010; 52208454). These supports are gratefully acknowledged. The results and conclusions presented in the paper are those of the authors and do not necessarily reflect the views of the sponsors.
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Published In
Journal of Structural Engineering
Volume 150 • Issue 9 • September 2024
Copyright
© 2024 American Society of Civil Engineers.
History
Received: Nov 22, 2023
Accepted: Mar 29, 2024
Published online: Jun 17, 2024
Published in print: Sep 1, 2024
Discussion open until: Nov 17, 2024
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