正交异性钢桥面板疲劳问题的研究进展

发布时间：2018-03-21 13:02

本文选题：桥梁工程　切入点：正交异性钢桥面板　出处：《中国公路学报》2017年03期 　论文类型：期刊论文

【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。
[Abstract]:In order to deepen the understanding of the fatigue problem of orthotropic steel bridge panel, the fatigue performance of orthotropic steel bridge panel and its evaluation method are discussed. The new orthotropic steel bridge slab structure and the research progress of orthotropic steel bridge slab fatigue reinforcement are analyzed and summarized, and the main problems restricting the orthotropic steel bridge panel fatigue research are discussed. The present situation and development trend of the fatigue problem of orthotropic steel bridge face are discussed. The results show that the fatigue problem is relative to the main beam and truss. The fatigue of orthotropic steel bridge panel is the fatigue problem of space structure determined by the fatigue performance of many complicated structural details, and its fatigue failure mode and fatigue performance. The fatigue damage mechanism, fatigue damage mechanism, fatigue performance evaluation method of new and in service orthotropic steel bridge panels, the applicable fatigue cracking strengthening method, and so on are more complicated. It is the important foundation of the whole life cycle design theory of the steel bridge and the important research subject which the bridge engineering sustainable development needs to solve urgently, relying on the innovation design idea and the high performance material, develops the new structure system and the construction detail, It is an important development direction of orthotropic steel bridge panel, advanced manufacturing technology represented by intelligent manufacturing, fatigue crack detection technology represented by infrared thermal imaging and ultrasonic phased array, etc. It provides important support for the further improvement of fatigue performance of orthotropic steel bridge panel and the development of fatigue crack detection technology.
【作者单位】：西南交通大学土木工程学院;
【基金】：国家自然科学基金项目(51578455,51178394,51378431) “十二五”国家科技支撑计划项目(2011BAG07B03) 中央高校基本科研业务费专项资金项目(2682014CX078)
【分类号】：U441.4

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