Connection Performance in Steel–Concrete Composite Truss Bridge Structures
Publication: Journal of Bridge Engineering
Volume 22, Issue 3
Abstract
Connections for steel–concrete composite trusses (SCCTs) for bridge applications were investigated. Eight specimens on a scale of 1/3 of the actual bridge were tested under static loading using connections with different gusset plates, including rectangular (RGP), π shape (PSGP), and J shape (JSGP). A detailed account of the design considerations, loading procedure, and experimental parameters is provided. A three-dimensional (3D) finite-element (FE) model was developed to analyze the mechanical behavior of these three composite truss connections. The results of the FE analysis were in good agreement with the experimental results. Both indicated excellent mechanical behavior for the investigated composite truss connections, with sufficient safety factors. The minimum yielding, cracking, and ultimate loads obtained from specimens were 2.65, 2.21, and 3.87 times the design load (907 kN), respectively. All specimens underwent considerable deformation, thereby suggesting satisfactory ductility. The presented overall investigation may provide a reference for the design and construction of composite joints in composite truss bridges.
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Acknowledgments
This research was financially supported by the National Natural Science Foundation of China (Grants 50908230 and 51578548) and the Innovative Research Project in Central South University (Grant 2016zzts071).
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Information
Published In
Journal of Bridge Engineering
Volume 22 • Issue 3 • March 2017
Copyright
© 2016 American Society of Civil Engineers.
History
Received: May 10, 2016
Accepted: Sep 5, 2016
Published online: Nov 3, 2016
Published in print: Mar 1, 2017
Discussion open until: Apr 3, 2017
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