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研究目的:软土路基由于压缩性高,渗透性低,固结变形持续时间长,所以其沉降规律研究就成为工程设计中的主要问题。为研究软土路基在某一段周期时间内的沉降变形规律,本文对新建胶新铁路软土路基进行2年的详细监测,以此分析软土路基的沉降变形规律。研究结论:路堤土体剖面上差异沉降变形在横向上表现出明显的不均匀性;通车前,路堤不均匀沉降程度随着路堤压缩量的加大而增大;通车1年后,路堤表现为缓慢沉降过程,路堤土体在横向上的不均匀变形程度随之减小,且路堤本体沉降变化很小;土体水平位移引起的工后沉降很小,不足总沉降的9%;磁环高程变化规律表明,路基在工后约6～8个月稳定。
Research purposes: Due to the high compressibility, low permeability and long duration of consolidation deformation of soft soil roadbed, the research on settlement law has become the major problem in engineering design. In order to study the settlement regularity of soft soil roadbed during a certain period of time, this paper conducts a detailed monitoring of the soft soil roadbed of new soft rubber railway for 2 years to analyze the settlement law of soft soil roadbed. Research conclusions: The differential settlement on the profile of embankment shows obvious inhomogeneity in horizontal direction. Before embankment, the uneven settlement of embankment increases with the increase of embankment compression. After one year of opening, the embankment behaves as During the process of slow settlement, the uneven deformation of the embankment in the horizontal direction decreases with the change of the settlement of the embankment; the settlement after the horizontal displacement of the soil is very small, less than 9% of the total settlement; The law of change shows that the subgrade is stable after about 6 to 8 months of work.