Connection performance in steel-concrete composite truss bridge structures

Guo-an Yin, Fa-xing Ding, Hai-bo Wang, Yu Bai, Xue-mei Liu

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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. © 2016 American Society of Civil Engineers.
Original languageEnglish
Article number04016126
Number of pages16
JournalJournal of Bridge Engineering
Issue number3
Publication statusPublished - 1 Mar 2017


  • Composite truss bridge
  • Connection
  • Failure models
  • Finite-element analysis
  • Ultimate bearing capacity
  • Bridges
  • Concretes
  • Safety factor
  • Trusses
  • Composite truss
  • Design and construction
  • Experimental parameters
  • Failure model
  • Steel-concrete composite
  • Threedimensional (3-d)
  • Finite element method

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