RETROFIT of BRIDGE DECKS SUPPORTED by STEEL GIRDERS
This study investigates the retrofit of bridges using continuous decks partially debonded from the ends of simply-supported steel girders. The bridge may behave as a partially continuous structure for loads applied after casting the deck. Long term serviceability and improved aesthetics and safety are achieved by eliminating deck joints and providing a continuous waterproof deck. This paper presents a nonlinear finite element approach that investigates the behavior of jointless bridge deck system subjected to instantaneous effects. The analysis was validated using experimental testing results. The study investigated some variables affecting the steel girders’ behavior including support configurations, link slab stiffness, debonded length, and ratio of deck reinforcement. The study suggests that the use of such a beam-slab system is a simple and economical response to bridge damage due to the existence of deck joints.