Analysis of Fatigue Behavior of Steel-Concrete Composite Bridge Deck

Bridge deck is directly exposed to external environments and traffic loads. The deck can be more easily deteriorated than other bridge members and is often needed to be repaired or strengthened during the service life. Therefore, development of high strength and durable bridge deck that requires minimum maintenance during the service life is demanded. This study has been conducted to obtain basic data that are essential for the establishment of a fatigue design guideline of a steel-concrete composite bridge deck. The developed deck has high flexural rigidity compared to the conventional reinforced concrete deck. In this paper, the results of a detailed structural analysis and a fatigue test on the developed deck are presented. A guideline for the fatigue design of the developed deck is also proposed.