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首页> 外文期刊>Journal of bridge engineering >Fatigue Reliability Assessment for Orthotropic Steel Deck Details Using Copulas: Application to Nan-Xi Yangtze River Bridge
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Fatigue Reliability Assessment for Orthotropic Steel Deck Details Using Copulas: Application to Nan-Xi Yangtze River Bridge

机译：基于Copulas的正交异性钢桥面疲劳强度评估：在南溪长江大桥中的应用

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摘要

In this study, the correlation between the fatigue equivalent stress and the stress cycle was considered using the copula function in the fatigue reliability assessment. In most earlier studies, the variables for the fatigue reliability function were assumed to be independent. However, based on the structural health monitoring (SHM) data in this study, they show that there are correlation properties in part of the variables. Hence, using the traditional method, the calculated fatigue reliability index is not accurate. For this reason, a new calculation method that considers the correlation between the variables was developed. The Gaussian copula was used to solve this problem because of its powerful connect function and concise expression. The study shows that there is a correlation between the fatigue stress and the fatigue stress cycle in the Nan-Xi Yangtze River Bridge. The values of the fatigue reliability index that consider the correlation between the variables are smaller than those calculated by the traditional method. (C) 2017 American Society of Civil Engineers.
机译：在这项研究中，在疲劳可靠性评估中使用copula函数考虑了疲劳当量应力与应力循环之间的相关性。在大多数较早的研究中，疲劳可靠性函数的变量被认为是独立的。但是，基于这项研究中的结构健康监测（SHM）数据，他们表明部分变量具有相关性。因此，使用传统方法，计算出的疲劳可靠性指标是不准确的。因此，开发了一种考虑变量之间相关性的新计算方法。高斯copula因其强大的连接功能和简洁的表达而被用于解决此问题。研究表明，南溪长江大桥的疲劳应力与疲劳应力循环之间存在相关性。考虑变量之间相关性的疲劳可靠性指标值小于传统方法计算得出的值。 （C）2017年美国土木工程师学会。

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  • 来源
    《Journal of bridge engineering》 |2018年第1期|04017123.1-04017123.13|共13页
  • 作者

    Liu Yang; Zhang Haiping; Li Deru; Deng Yang; Jiang Nan;

  • 作者单位

    Changsha Univ Sci & Technol, Sch Civil Engn & Architecture, 960,Sect 2 Wanjiali South Rd, Changsha 410114, Hunan, Peoples R China;

    Changsha Univ Sci & Technol, Sch Civil Engn & Architecture, 960,Sect 2 Wanjiali South Rd, Changsha 410114, Hunan, Peoples R China;

    Changsha Univ Sci & Technol, Sch Civil Engn & Architecture, 960,Sect 2 Wanjiali South Rd, Changsha 410114, Hunan, Peoples R China;

    Changsha Univ Sci & Technol, Sch Civil Engn & Architecture, 960,Sect 2 Wanjiali South Rd, Changsha 410114, Hunan, Peoples R China;

    Changsha Univ Sci & Technol, Sch Civil Engn & Architecture, 960,Sect 2 Wanjiali South Rd, Changsha 410114, Hunan, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Fatigue reliability assessment; Correlation; Gaussian copula; Structural health monitoring (SHM);

    机译：疲劳可靠性评估;相关性;高斯copula;结构健康监测（SHM）;

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