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正交异性钢桥面板焊接接头疲劳评估方法

崔闯,  刘益铭,  廖贵星,  张清华,  卜一之

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文章导航 > 西南交通大学学报  > 2015 >  28(6): 1011-1017.
崔闯, 刘益铭, 廖贵星, 张清华, 卜一之. 正交异性钢桥面板焊接接头疲劳评估方法[J]. 西南交通大学学报, 2015, 28(6): 1011-1017. doi: 10.3969/j.issn.0258-2724.2015.06.006
引用本文: 崔闯, 刘益铭, 廖贵星, 张清华, 卜一之. 正交异性钢桥面板焊接接头疲劳评估方法[J]. 西南交通大学学报, 2015, 28(6): 1011-1017. doi: 10.3969/j.issn.0258-2724.2015.06.006
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CUI Chuang, LIU Yiming, LIAO Guixing, ZHANG Qinghua, BU Yizhi. Fatigue Evaluation Approaches of Welded Joints on Orthotropic Steel Bridge Deck[J]. Journal of Southwest Jiaotong University, 2015, 28(6): 1011-1017. doi: 10.3969/j.issn.0258-2724.2015.06.006
Citation: CUI Chuang, LIU Yiming, LIAO Guixing, ZHANG Qinghua, BU Yizhi. Fatigue Evaluation Approaches of Welded Joints on Orthotropic Steel Bridge Deck[J]. Journal of Southwest Jiaotong University, 2015, 28(6): 1011-1017. doi: 10.3969/j.issn.0258-2724.2015.06.006
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正交异性钢桥面板焊接接头疲劳评估方法

doi: 10.3969/j.issn.0258-2724.2015.06.006
基金项目: 

国家科技支撑计划资助项目(2011BAG07B03)

国家自然科学基金资助项目(51178394)

详细信息
    作者简介:

    崔闯(1989-),男,博士研究生,研究方向为钢结构桥梁与钢-混凝土组合结构桥梁,E-mail:swjtu_cc@126.com

Fatigue Evaluation Approaches of Welded Joints on Orthotropic Steel Bridge Deck

    摘要
  • 摘要: 传统正交异性钢桥面板疲劳性能评价方法评估精度不足,为准确评估其焊接接头的疲劳性能,基于线性累积损伤理论,探讨了结构应力法、切口应力法用于正交异性钢桥面板焊缝疲劳性能评估的可行性和准确性.以典型正交异性钢桥面板为研究对象,采用足尺模型试验和仿真分析,并结合已有试验数据对上述评估方法进行验证.研究结果表明:与结构应力法相比,采用切口应力法或传统名义应力法评价正交异性钢桥面板的疲劳性能时,评价结果的离散性大;采用结构应力法(离散度为3倍标准差的主S-N曲线时)更准确,适用于正交异性钢桥面板焊接接头疲劳性能评估.

     

    Abstract: The traditional fatigue evaluation approach for orthotropic steel bridge deck is not sufficiently accurate. To accurately evaluate the fatigue properties of welded joints on a orthotropic steel bridge deck, the validities and accuracies of the structural stress method and the notch stress method were investigated based on the liner cumulative damage theory. By taking a typical orthotropic steel bridge deck as an investigated subject, the evaluation methods were discussed by a full-scale segment model test and numerical analysis, and they were verified by the data from the existing full-scale model fatigue tests. The research results indicate that compared with the structural stress method, the notch stress method and the traditional fatigue evaluation approach have high data scatters. The structural stress method may be suitable to the fatigue evaluation of welded joints on a orthotropic steel bridge deck under the condition that the data scatter of a master S-N curve is three times of standard deviation.

     

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出版历程
  • 收稿日期:  2014-12-23
  • 刊出日期:  2015-12-25

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