Abstract
This study conducts static and fatigue loading simulations of bridge steel deck which is overlay-reinforced by Engineered Cementitious Composite (ECC), and the composite effect is analytically evaluated. The fatigue model of ECC is developed based on micromechanics, the concept of the material design of ECC, and flexural fatigue analysis is carried out in order to show the validity. As a result of FEM analysis of the composite deck, deflection and deck strain decrease due to the reinforcement effect of ECC, and it is shown that the high tensile resistance of ECC can improve the fatigue durability of steel deck. Furthermore, it is expected that the controlled crack opening displacement of ECC is beneficial to prevent the structural degradation caused by environmental influences.
