运营状态下悬索桥钢桥面板疲劳效应监测与分析

宋永生, 丁幼亮, 王晓晶, 李爱群, 李万恒, 闫昕

宋永生, 丁幼亮, 王晓晶, 李爱群, 李万恒, 闫昕. 运营状态下悬索桥钢桥面板疲劳效应监测与分析[J]. 工程力学, 2013, 30(11): 94-100. DOI: 10.6052/j.issn.1000-4750.2012.07.0551
引用本文: 宋永生, 丁幼亮, 王晓晶, 李爱群, 李万恒, 闫昕. 运营状态下悬索桥钢桥面板疲劳效应监测与分析[J]. 工程力学, 2013, 30(11): 94-100. DOI: 10.6052/j.issn.1000-4750.2012.07.0551
Song Yong-sheng, Ding You-liang, Wang Xiao-jing, Li Ai-qun, Li Wan-heng, Yan Xin. Monitoring and analysis of fatigue effects oN steel deck of a suspension bridge IN WORKING conditions[J]. Engineering Mechanics, 2013, 30(11): 94-100. DOI: 10.6052/j.issn.1000-4750.2012.07.0551
Citation: Song Yong-sheng, Ding You-liang, Wang Xiao-jing, Li Ai-qun, Li Wan-heng, Yan Xin. Monitoring and analysis of fatigue effects oN steel deck of a suspension bridge IN WORKING conditions[J]. Engineering Mechanics, 2013, 30(11): 94-100. DOI: 10.6052/j.issn.1000-4750.2012.07.0551

运营状态下悬索桥钢桥面板疲劳效应监测与分析

基金项目: 国家自然科学基金项目(51178100)
详细信息
    作者简介:

    宋永生(1984―),男,安徽蚌埠人,博士生,从事结构健康监测及安全评估研究(E-mail:song1984419@163.com);王晓晶(1973―),男,宁夏吴忠人,副研究员,硕士,从事特大桥综合管理系统的研发研究(E-mail:1074174389@qq.com);李爱群(1962―),男,湖南耒阳人,教授,博士,博导,从事结构健康监测及安全评估研究(E-mail:aiqunli@seu.edu.cn);李万恒(1972―),男,山东烟台人,副研究员,博士,从事桥梁结构设计和安全管理研究(E-mail:wh.li@rioh.cn);闫昕(1978―),男,吉林长春人,副研究员,博士,从事桥梁结构设计和安全评估研究(E-mail:yanxin66hrb@yahoo.com.cn).

    通讯作者:

    丁幼亮(1979―),男,江苏苏州人,副研究员,博士,博导,从事结构健康监测及安全评估研究(E-mail: civilding@163.com).

  • 中图分类号: TU318

Monitoring and analysis of fatigue effects oN steel deck of a suspension bridge IN WORKING conditions

  • 摘要: 基于润扬大桥悬索桥7个月的长期疲劳效应监测结果,建立了铺装层-钢桥面板一体化疲劳分析模型,并研究了两类关键焊接细节的疲劳效应与车流量、环境温度间的相关性关系。结果表明,两类焊接细节的应力循环次数与车流量线性相关而与环境温度无关,等效应力幅与环境温度线性相关而与车流量无关。由疲劳设计指南推荐的疲劳效应计算模型得到的应力循环次数较监测结果偏低,顶板-纵肋焊接细节的等效应力幅与监测结果吻合良好而纵肋对接焊接细节的结果较为保守。上述分析结果为疲劳设计指南的进一步改进和完善提供参考和依据。
    Abstract: One integrated fatigue analytical model consisting of asphalt pavement layer and orthotropic steel bridge deck was established based on long-term fatigue effect monitoring results of Runyang Suspension Bridge in seven months. The correlations between fatigue effects of two pivotal welded joints and traffic flow as well as ambient temperature were then investigated respectively. The investigation results show that the number of stress cycles is merely in linear correlation with traffic flow, and is irrelevant with ambient temperature. In addition, the calculated number of stress cycles according to the fatigue computation model recommended by design code is lower than that by monitoring results. The equivalent stress amplitude of deck-rib is coincident with monitoring results while the equivalent stress amplitude of rib-rib welded joint is relatively conservative. The above results are beneficial and referential for further improvement and completion of design code.
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  • 被引次数: 23
出版历程
  • 收稿日期:  2012-07-25
  • 修回日期:  2012-10-18
  • 刊出日期:  2013-11-24

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