根据现场实测的钢轨长度，对钢轨的蠕变伸长进行了分析。
According to the data measured from field, this paper analyses the creep lengthening of rail.
测定了矫直前后钢轨外形尺寸变化(包括轨头宽度、轨高、钢轨长度)，分析了轨高减少的原因。
The contour size changes of rail before and after straightening, involving width of rail head, rail height and rail length, were measured. The causes of rail height decrease were analyzed.
下部结构为轨道，钢轨被离散为双层弹性基础上有限长度的梁。
The lower structure in the coupling system is railway track where rails are considered as beams with finite length rested on double layer continuous elastic foundation.
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