According to the dynamic evolvement rules of the stress, strain and fracture distribution or fatigue cracking mechanism, fatigue equation and axle load conversion of the steel bridge deck asphalt mixture surfacing are proposed.

• 依据钢桥面沥青混合料铺装体系复合结构的应力场、应变场和损伤场在疲劳过程中的动态演变规律以及疲劳裂缝的形成机理，推导出钢桥面沥青铺装层疲劳性能方程和车辆轴载换算公式。