依据疲劳损伤累积理论，确定了公轨两用钢桁桥轨道横梁与整体节点连接头验证性疲劳试验的试验荷载。
According to fatigue damage accumulation theory, test load of verified fatigue test on rail across beam and welded connections with integral joint of combined steel truss bridge was gotten.
通过热处理可提高轨钢的强度及硬度，接触疲劳强度也随之提高。
Heat treatment can increase the tensile strength and the hardness of the rail steel, and the contact fatigue strength is also increased.
粘附磨损和疲劳磨损是轨钢的主要磨损形式。
Adhesive wear and surface - fatigue wear are the two major wear forms in rail steel.
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