ABSTRACT
Fiber reinforced polymer (FRP) has been adopted in short span bridges due to its advantages such as high tensile strength, light weight, high fatigue resistance and high corrosion resistance. In this study, flexural behavior of the Hybrid FRP (HFRP) and ultra high-strength fiber reinforced concrete (UHSFRC) composite girders were checked by changing some variables such as the UHSFRC slab width and thickness, bonding of UHSFRC slab to the top flange with epoxy and the performance of steel bolts and steel anchors as the shear connectors. The experimental results showed that the combined use of UHSFRC slab and epoxy was increased the flexural capacity and the stiffness of the composite girder compared to the HFRP I-beam alone. Therefore, the tensile capacity of the HFRP I-beam can be effectively utilized. Failure loads of UHSFRC and HFRP composite girders with steel bolts and epoxy bonding can be approximately estimated by fiber model.
