Static behaviour of bolted shear connectors with mechanical coupler embedded in concrete

Branko Milosavljevic*, Ivan Milicevic, Marko Pavlovic, Milan Spremic

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)


The research of shear connectors composed from mechanical couplers with rebar anchors, embedded in concrete, and steel bolts, as a mean of shear transfer in composite connections is presented in the paper. Specific issues related to this type of connections are local concrete pressure in the connector vicinity as well as the shear flow along the connector axis. The experimental research included 18 specimens, arranged in 5 series. Nonlinear numerical analyses using Abaqus software was conducted on corresponding FE models. Different failure modes were analysed, with emphasis on concrete edge failure and bolt shear failure. The influence of key parameters on the behaviour of shear connector was examined: (1) concrete compression strength, (2) bolt tensile strength and diameter and (3) concrete edge distance. It is concluded that bolted shear connectors with mechanical couplers have sufficient capacity to be used as shear connectors in composite structures and that their behaviour is similar to the behaviour of post installed anchors as well as other types of connectors anchored without the head.

Original languageEnglish
Pages (from-to)257-272
Number of pages16
JournalSteel and Composite Structures
Issue number2
Publication statusPublished - 25 Oct 2018


  • Concrete edge breakout
  • Finite element analysis
  • Mechanical couplers
  • Push-out tests
  • Shear connectors
  • Steel-concrete composite structures


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