The jacking force has apparent effects on displacement and stress distribution of segments, and it is the most adverse load case during construction stage.
千斤顶顶力对施工阶段管片的位移、应力有明显的影响，千斤顶顶力作用是管片在施工状态下最不利的工况。
The effects of case parameters on the distribution of elastic-plastic stress hi railhead are analyzed including lateral displacement, gross rail load on axle and constrained conditions of rail bottom.
对于工况参数，主要分析了横移量、轴重和轨底约束对轮轨滚动接触应力场的影响。
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