介绍目前山区铁路在小半径曲线较多、轨源不足、无法使用大型机械集中作业等困难条件下,以人工作业为主的既有线无缝化改造工序。同时也介绍了目前正在大力提高山区铁路线路质量的情况下,线路无缝化改造的施工方案、施工步骤、应力放散及钢轨最终焊接无缝化的全部施工过程,供大家探讨指点。 At present, the mountainous railway at present has a seamless transformation process of existing lines, which mainly consists of manual work, under the difficult conditions such as small radius curve, insufficient track, unable to use large-scale machinery centralized operation and so on. At the same time, it also introduces the whole construction process of seamlessly transforming the construction scheme, construction steps, stress dissipation and seamless welding of the railroad under the circumstance of greatly improving the quality of mountain railway lines.