钢桥面板厚度小，铺装层的相对刚度较大，钢桥面板疲劳设计时，应该考虑铺装层与钢桥面板的共同作用。假设桥面铺装与顶板没有相对滑移，采用有限元方法探讨了桥面铺装弹性模量和厚度对正交异性钢桥面板疲劳应力幅的影响。

Because the thickness of orthotropic steel deck is thin and the stiffness of pavement is relatively large, the interaction between orthotropic steel deck and pavement on it can not be neglected in the fatigue design of orthotropic steel deck. Based on the assumption of non-slip between pavement and the bridge deck, influences of elastic modulus and thickness of pavement on the fatigue stress range of four typical details in orthotropic steel deck were discussed according to FEM(finite element method) analysis results.