钢轨残余应力是钢轨内部的固有应力。它影响钢轨的使用寿命。
The residual stress is the inherent stress in rails, it affects the life of rails.
结果表明，冷扩张过程所引入的切向残余压应力能保持足够的强度，以对钢轨螺栓孔起到显著的防裂和止裂作用。
It is concluded that, the residual stress induced by cold expansion can maintain enough strength to prevent and retard fatigue crack initiation and growth in rail bolt hole.
螺栓扭矩增大，接头区钢轨轨腰拉力、夹板应力、螺杆内应力都会增大，而钢轨位移会随着螺栓扭矩的增大而减小。
As the bolt tension increase, the tension of rail web, stress of joint bar and stress of joint bolt would increase accordingly, but the displacement of rail would become smaller.
分析了两种PD3钢轨钢在固定荷载循环条件下不同寿命阶段试样理论应力最大处的维氏硬度的演化。
The rigidity's evolvement of the two kinds of PD3 rail steel at different stage of life is analyzed.
本文对三种新型钢轨接头现场使用情况的测试结果进行了介绍，主要包括测点处的钢轨接头夹板上、下缘动弯应力、夹板水平中性轴处剪应力。
The testing results about the use of new rail joint was introduced, which include the dynamic flexure stress of upper limb and lower margin of joint bar, shearing stress of horizontally neutral axis.
采用两种不同的计算方法对大桥每联钢轨附加应力逐一检算，结果可行。
Two different methods were employed to check the secondary stresses in each rail on the bridge, and the results were satisfactory.
计算发现，夹杂物周围的最大剪切应力是不含夹杂物时的1.2～1.7倍，这对钢轨疲劳寿命造成有害影响。
The calculation indicates that the maximum shear stress around inclusion is 1.2-1.7 times of that without inclusion, which has a harmful effect on the fatigue endurance of rail.
自然环境条件下的温度变化会在钢轨内部产生拉伸应力，影响无缝线路轨道的稳定性。
The variability of weather and climate is a cause of considerable stress to CWR track which has influence on the stability of rail.
对于钢轨抗滑桩，把测斜仪所测横向变形当作钢轨桩的弯曲变形，然后再反算出钢轨桩的弯矩、正应力和抗滑力。
For rail anti-slide piles, the bending moment, normal stress and anti-slide force of rail anti-slide pile are calculated inversely based on flexure deformation measured by inclinometer.
影响钢轨平直度和残余应力的因素很多，其中钢轨的矫前弯曲度就是其中之一。
The impacts of the straightness and the residual stress are very many, and one of which is the curvature before straightening.
提出金属磁记忆法可以对钢轨内应力进行定量测量。
Therefore metal magnetic memory testing (MMT) equipments could be used in measuring internal stress of seamless railway.
提出金属磁记忆法可以对钢轨内应力进行定量测量。
Therefore metal magnetic memory testing (MMT) equipments could be used in measuring internal stress of seamless railway.
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