Finite Element Analysis on Shear Behavior of High-Strength Bolted Connectors under Inverse Push-Off Loading

High-strength bolted shear connectors (HSBSCs), which can be demounted easily and efficiently during deconstruction, are recommended to replace the conventional steel studs in steel–concrete composite beams (SCCBs) meet requirements of sustainable development. The existing investigations on behavior HSBSCs mainly focus positive moment area beams, concrete slab is compress condition. In this paper, a three-dimensional finite element model (FEM) was developed investigate performance subjected inverse push-off loading. Material nonlinearities interactions among all components were included FEM. accuracy reliability proposed FEM initially validated against available test results. Load-carrying capacity load–slip response under loading further studied by verified A parametric study carried out determine influence strength, diameter tensile strength bolt clearance between as well pretension HSBSCs. Based extensive analyses, design recommendations for estimating load at first slip load-bearing resistance verified.