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通常国内无碴轨道设计中不进行疲劳损伤设计,而实际情况中道床板结构承受轮轨垂向力荷载等循环荷载作用,极有可能在其使用年限内产生疲劳损伤,故对道床板的疲劳损伤及其使用寿命进行研究有着非常重要的意义.本文主要阐述了利用S-N曲线(又称Wholer曲线)法对国内设计中24 m单孔箱梁上Rheda2000型无碴轨道道床板进行疲劳寿命预测分析.
Usually, the design of ballastless track in China is not designed for fatigue damage. However, in actual conditions, the ballast structure of track slab is subjected to cyclic load such as wheel-rail vertical load, which is likely to cause fatigue damage during its service life. Damage and its service life.It mainly expounds the prediction and analysis of the fatigue life of Rheda2000 ballastless track railings on 24 m single-hole box girder by using SN curve (also known as Wholer curve) .