Composite behavior of hybrid FRP-concrete bridge decks on steel girders

A hybrid FRP-concrete deck on steel girders specimen was subjected to a series of service flexural loading tests under seven different loading conditions to capture the global response of the specimen, and to investigate the composite action of the bridge. The experimental and finite element results demonstrated that the structural performance of the hybrid FRP-concrete bridge deck exceeds AASHTO specifications. In addition, it was observed that the hybrid deck and the steel girders are interacting in a partially composite action under service loading conditions. Effective width calculations of the hybrid deck showed that the effective flange width for hybrid decks are less than AASHTO prescribed effective width for concrete decks.