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The Prediction of Fatigue Damage using Dynamic Characteristics for Steel Structures in 154kV Substation

机译:使用154kV变电站钢结构动态特性预测疲劳损伤

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Fatigue damage increases with applied load cycles in a cumulative manner. Cumulative fatigue damage analysis plays a key role in life prediction of structures subjected to field load histories. Steel structures of substations are subjected to a large number of repetitive loading of different magnitudes caused mainly by mechanical equipment such as gas insulated switchgear (GIS). In this paper, a method is presented to predict the fatigue damage of the steel structures of a 153kV substation using dynamic characteristics. Through the field measurements and the fatigue analysis, it was observed that the accumulated fatigue damage was very small after a year of operation and the amount of accumulated fatigue damage will be smaller than 0.2 until the end of the working life. The structural safety of the 153kV substation can be guaranteed by the normal inspection.
机译:疲劳损坏随着累计的方式施加载荷周期增加。累积疲劳损伤分析在经过现场负荷历史的结构的生命预测中起着关键作用。变电站的钢结构受到主要由机械设备(如气体绝缘开关设备(GIS))的大量重复载荷。本文提出了一种方法,以使用动态特性预测153kV变电站的钢结构的疲劳损坏。通过现场测量和疲劳分析,观察到累计疲劳损坏在一年的运行后非常小,并且累积疲劳损伤的量将小于0.2直到工作寿命结束。正常检测可以保证153kV变电站的结构安全性。

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