在众多的湿陷性黄土路基加固的施工工艺中,水泥挤密桩是一种相对比较经济和可靠的施工方法,在铁路既有线提速改造的路基基床施工中应用比较成功,文章通过分析其加固的机理和其在试验段的成果说明其具有很高的应用价值和可行性,这对其在客运专线路基处理施工的成功应用和推广有着重要的意义。 Among many collapsible loess embankment reinforcement construction techniques, cement compaction pile is a relatively economical and reliable construction method, which has been successfully applied in the construction of subgrade bed for speeding up the existing railway line. By analyzing its application, The strengthening mechanism and its results in the experimental section show that it has high application value and feasibility, which is of great significance to its successful application and promotion in the subgrade treatment of passenger dedicated lines.