中文摘要：

为深化对正交异性钢桥面板疲劳问题的认识,从正交异性钢桥面板的疲劳性能及其评估方法、新型正交异性钢桥面板结构以及正交异性钢桥面板疲劳加固的研究进展等层面进行了分析总结,讨论了制约正交异性钢桥面板疲劳研究的主要问题,探讨了正交异性钢桥面板疲劳问题研究的现状和发展趋势。结果表明：相对于主梁和主桁等杆系结构的疲劳问题,正交异性钢桥面板的疲劳体现为由多个复杂构造细节部位的疲劳性能共同决定的空间结构疲劳问题,其疲劳破坏模式、疲劳性能、抗疲劳优化设计和疲劳开裂加固等问题更为复杂;疲劳损伤机理、新建和在役正交异性钢桥面板疲劳性能评估方法、适用的疲劳开裂加固方法,是钢桥的全寿命周期设计理论的重要基础和桥梁工程可持续发展迫切需要解决的重要研究课题;依托创新设计理念和高性能材料,发展新型结构体系和构造细节,是正交异性钢桥面板的重要发展方向;以智能化制造为代表的先进制造加工技术、以红外热成像和超声波相控阵等为代表的疲劳裂纹检测技术,为正交异性钢桥面板疲劳性能的进一步提升和疲劳裂纹检测技术的发展提供了重要支撑。

英文摘要：

In order to deepen the understanding of the fatigue problem of orthotropic steel bridge deck（OSD）,the fatigue performance and its evaluation methods of OSDs,new-type OSD structure and fatigue reinforcement of OSDs were analyzed and summarized.The main problems restricting fatigue research of OSDs were discussed.The current state and development tendency of the fatigue problem of OSDs were explored as well.The results show that compared with the fatigue problem of skeletal structures such as main girder and main truss,the fatigue problem of OSDs is a spatial structure fatigue problem codetermined by fatigue performance of multiple complex structural details, whose fatigue failure mode,fatigue performance,anti-fatigue optimization design and fatigue cracking reinforcement are more complex than skeletal structures.The fatigue damage mechanism,evaluation method of fatigue performance for building and existing OSDs as well as feasible method for fatigue reinforcement are important foundation for whole life-cycle design theory of steel bridge and research topic to be solved urgently in the sustainable development of bridge engineering.Relying on innovative design concept and highperformance materials,the progresses of new structural system and details are the significant development orientations of OSDs. The advanced fabrication technology represented by intelligent manufacturing and detection technology of fatigue crack represented by infrared thermography（IRT）and ultrasonic phased array provide an important support for the further improvement of fatigue performance of OSDs and development of fatigue crack detection technology.