Abstract
In recent decades, the use of composite structures has increased in favor of their quick, simple, and cost-effective construction and shear connectors are the key to attaining this composite behavior by transferring horizontal shear from concrete to steel girder and avoiding vertical separation. The efficiency of the composite connection depends on the stiffness and strength of the shear connector. The current study proposes an innovative concave type shear connector for the composite steel beams-RCC slab structure in buildings and bridges, which is economical and easier to install compared to conventional headed studs. The push-out tests were simulated in ABAQUS software using finite element analysis to assess the connection's ductility, stiffness, and shear strength as well as the connection's ultimate slip. The numerical analysis observed an enhanced strength and stiffness of the concave shear connectors compared to conventional headed shear studs, achieving a material saving of 20% and satisfying the Eurocode ductility criteria.
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