CONFERENCE / REACT-2024

The load-deflection behavior of hybrid fiber-reinforced polymer (FRP)-concrete-steel double-skin tubular beams (DSTBs) is quite ductile, but there may be considerable amounts of slippage between the concrete and the inner steel tube. To improve the bond performance between the concrete and the steel in heavy duty composite beams, Perfobond (PBL) shear connectors are commonly used. PBH was proposed based on the researches of PBL shear connectors The PBH shear connector consists of stirrup and stiffening ribs, which allow the steel box and concrete to work together. In this study Perfobond hoop shear connectors (PBH) provided in hybrid DSTBs for the first time. This study presents a experimental study aimed to developing a good understanding about the behavior of new hybrid double skin tubular beams with PBH shear connectors comparing with PBL shear connectors, also investigates the flexural performance of hybrid DSTBs having different cross-sections.