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１ 钢轨实物弯曲疲劳试验受力方式的选择钢轨实物弯曲疲劳试验方法已纳入铁道部标准（ＴＢ１３５４—７９）。这个标准规定，“该方法适用于各种类型和材质的实物钢轨在弯曲应力作用下疲劳试验”。但是对于断面不对称的５０ＡＴ、６０ＡＴ钢轨来说，如果真的使用该标准，就显?
1 Rail physical bending fatigue test The choice of force mode Rail physical bending fatigue test method has been incorporated into the Ministry of Railways standards (TB1354-79). This standard states: “This method is applicable to all types and materials of physical rail fatigue test under bending stress.” But for asymmetric section 50AT, 60AT rail, if you really use the standard, it shows?