钢桥面板疲劳病害模糊综合评定方法研究
发布时间：2019-05-10 02:33
【摘要】：针对我国钢箱梁疲劳损伤问题,展开评价方法的研究,将模糊综合评定法应用于钢箱梁疲劳病害的评定。在现有疲劳评价方法分析基础上,结合钢箱梁疲劳病害多因素影响特点,建立钢箱梁疲劳病害评定指标体系,包括疲劳裂纹长度、裂纹增长速率、疲劳位置腐蚀程度、疲劳构造细节受力情况以及桥梁的在役时间。针对每个指标,通过工程实测数据及理论分析,划分5个等级并给出了相应分值。运用模糊数学理论和层次分析法,建立模糊综合评定模型,并通过实例评定,为钢桥面板疲劳病害的安全评估提供了计算步骤和过程。
[Abstract]:In view of the fatigue damage problem of steel box girder in China, the evaluation method is studied, and the fuzzy comprehensive evaluation method is applied to the assessment of fatigue disease of steel box girder. On the basis of the analysis of the existing fatigue evaluation methods, combined with the characteristics of many factors affecting the fatigue disease of steel box girder, the evaluation index system of fatigue disease of steel box girder is established, including fatigue crack length, crack growth rate and corrosion degree in fatigue position. The stress of fatigue structure details and the time in service of the bridge. According to each index, through the engineering measured data and theoretical analysis, five grades are divided and the corresponding scores are given. Based on fuzzy mathematics theory and analytic hierarchy process (AHP), the fuzzy comprehensive evaluation model is established, and the calculation steps and processes are provided for the safety assessment of steel bridge deck fatigue disease through an example.
【作者单位】： 河海大学土木与交通学院;
【基金】：国家自然科学基金项目(51478163) 中央高校基本科研业务费专项资金(2015B17414)
【分类号】：U445.71
本文编号：2473277
[Abstract]:In view of the fatigue damage problem of steel box girder in China, the evaluation method is studied, and the fuzzy comprehensive evaluation method is applied to the assessment of fatigue disease of steel box girder. On the basis of the analysis of the existing fatigue evaluation methods, combined with the characteristics of many factors affecting the fatigue disease of steel box girder, the evaluation index system of fatigue disease of steel box girder is established, including fatigue crack length, crack growth rate and corrosion degree in fatigue position. The stress of fatigue structure details and the time in service of the bridge. According to each index, through the engineering measured data and theoretical analysis, five grades are divided and the corresponding scores are given. Based on fuzzy mathematics theory and analytic hierarchy process (AHP), the fuzzy comprehensive evaluation model is established, and the calculation steps and processes are provided for the safety assessment of steel bridge deck fatigue disease through an example.
【作者单位】： 河海大学土木与交通学院;
【基金】：国家自然科学基金项目(51478163) 中央高校基本科研业务费专项资金(2015B17414)
【分类号】：U445.71
【相似文献】
相关期刊论文 前2条
1 王春生;冯亚成;;正交异性钢桥面板的疲劳研究综述[J];钢结构;2009年09期
2 ;[J];;年期
相关硕士学位论文 前1条
1 陈谦;正交异性钢桥面板疲劳性能及维修加固方法研究[D];北京交通大学;2015年
，本文编号：2473277
本文链接：https://www.wllwen.com/kejilunwen/daoluqiaoliang/2473277.html
