钢桥面板顶板-U肋焊缝疲劳失效研究综述  

Review of fatigue failure of roof-U rib weld in steel bridge deck

作　　者：袁周致远 吉伯海[1] 夏良辰 YUAN Zhouzhiyuan;JI Bohai;XIA Liangchen(College of Civil and Transportation Engineering,Hohai University,Nanjing 210098,China)

机构地区：[1]河海大学土木与交通学院,江苏南京210098

出　　处：《交通科学与工程》2025年第2期11-19,共9页Journal of Transport Science and Engineering

基　　金：国家自然科学基金项目(52308166)。

摘　　要：正交异性钢桥面板疲劳损伤问题突出,是当前桥梁工程领域亟待攻克的关键难题之一。由于顶板-U肋焊缝构造特殊,在随机轮载、残余应力、焊接缺陷等因素的作用下,该部位受力复杂,已成为钢桥面板疲劳损伤控制的关键部位。针对正交异性钢桥面板顶板-U肋焊缝疲劳问题,调研了国内外顶板-U肋焊缝疲劳研究情况和进展,从疲劳损伤特征及成因、研究方法和疲劳强度三个方面展开综述,阐述了目前针对该构造细节的疲劳研究和试验的具体方法,分析了顶板-U肋焊缝疲劳受力特征,探讨了该部位典型的疲劳裂纹扩展规律,并基于已有疲劳试验结果,对比分析了不同失效模式下焊缝的疲劳强度,揭示了不同失效模式对其疲劳性能的影响。结果表明,钢桥面板顶板-U肋焊缝存在多种疲劳失效形式,并且各失效形式下的疲劳强度存在一定差异,然而目前关于该部位的疲劳研究往往关注整体的疲劳性能,对特定失效形式下的疲劳性能以及损伤机理缺少针对性的研究,难以准确反映该部位真实的疲劳性能。The fatigue damage of orthotropic steel bridge decks is a prominent problem,which is one of the key problems in bridge engineering.Due to the special structure of roof-U rib weld,the stress on this part is complicated under the action of random wheel load,residual stress,welding defects,and other factors,and it has become the key part of the fatigue damage control of steel bridge decks.With respect to the fatigue of roof-U rib weld of orthotropic steel bridge decks,this paper investigated the research status and progress of the fatigue of roof-U rib weld at home and abroad,summarized the fatigue damage characteristics and causes,research methods,and fatigue strength,described the fatigue research and test methods for the structure,and analyzed the fatigue stress characteristics of roof-U rib weld.The typical fatigue crack propagation law of this part was discussed,and the fatigue strength under different failure modes was compared and analyzed based on the fatigue test results.Further,the influence of different failure modes on the fatigue properties was revealed.The results show that there are various fatigue failure modes of roof-U rib weld in steel bridge decks,and there are certain differences in fatigue strength under different failure modes.However,current fatigue studies on this part tend to focus on the overall fatigue performance and lack targeted research on fatigue performance and damage mechanism under specific failure modes.It is difficult to accurately reflect the real fatigue performance of this part.

关 键 词：钢桥面板 顶板-U肋焊缝 受力特征 失效模式 疲劳强度 综述 

分 类 号：U448.36[建筑科学—桥梁与隧道工程]