Fatigue Damage Assessment For Steel-Concrete Composite Deck

This paper shows the damage process of steel-concrete composite deck subjected to high-cycle moving load by using experimental study and numerical analysis. The analysis is based on fatigue constitutive models for concrete as well as proposed interface element between steel and concrete. Both experiment and analysis proved that the failure mode of composite deck is strongly affected by the surface condition of the ribs. Especially the cracks on the surface concrete caused by the bond loss are considered to be a damage indicator of composite deck. In order to find this indicator, periodical inspection of pavement and nondestructive test are recommended