Push-out behaviour of demountable injected vs. blind-bolted connectors in FRP decks

The main challenge for realizing competitive hybrid steel-FRP structures, such as bridges, carparks, is to make the steel and FRP components work together. In this study shear resistance, stiffness ductility of three types demountable bolted connectors are examined. Two blind-bolted M20 a novel, injected steel-reinforced resin (SRR) connection selected perform push-out experiments in web-core decks. Failure modes excessive bearing bolt failure connectors, respectively, identified. Nonlinear, highly detailed finite element (FE) models were also built validated by results tests provide insights load-transfer mechanism. Analysis internal forces deformation through FE reveals that blind high resistance slip capacity thanks sleeves catenary effects. SRR connector shows distinct centric load transfer owing gapless design.