标准编号:	TB/T 1354-1979
中文名称:	钢轨实物弯曲疲劳试验方法
中标分类:	S10    铁路建筑设备综合
行业分类:	TB    铁路运输行业标准
发布机构:	中国人民共和国铁道部
发布日期:	1980-04-01
实施日期:	1980-4-1
标准状态:	superseded
被新标准替代:	TB/T 2344.1-2020 钢轨 第1部分：43kg/m～75kg/m钢轨
被替代日期:	2021-7-1
翻译语言:	英文
文件格式:	PDF
翻译字数:	4000 字
交付时间:	1 个工作日

I. General 1. The bending fatigue test for the rail is conducted to obtain the fatigue curve and fatigue limit of the rail under alternating stress. 2. During the test, the rail is simply supported on two bearings with a support span of 1,000mm, its rail head being upward, and its concentrated load applied to the midpoint of the span. 3. The radius of the indenter running surface curve applied with load is 420±5mm, and the width of the running surface (perpendicular to the rail length) shall be greater than that of the rail head. The indenter hardness is HRC 50~60, and the surface finish is not less than 4. 4. The rail stress may be calculated according to the following Equation: