Finite element modelling of push-out tests for novel locking nut shear connectors

Steel-concrete composite beams have been used in bridge construction for decades. Novel demountable bolted shear connectors, that allow disassembly and offer high level of prefabrication, are proposed the connection deck with steel beams, as an alternative to conventional headed studs. In terms sustainability, connectors facilitate replacement deteriorating components therefore extend design life. Despite their effectiveness, research on steel–concrete is limited. order expand available literature, this paper develops a three-dimensional finite element model investigate behaviour novel connector precast bridges. The uses high-strength bolts, which fastened beam aid special locking nut configuration prevents slip bolts within holes. accuracy FE validated by comparing its predictions experimental results literature. Once validated, was then conduct parametric study evaluate effect bolt height, diameter tensile strength, pretension compressive strength concrete load-slip behaviour, resistance, capacity stiffness connectors.