华北地区典型地基土分区和路基沉降变形特征研究

华北地区广泛分布软土、松软土，由于其成因不同，导致变形特性差异较大。近年该区域新建铁路众多，本文针对该区域不同分区的铁路项目典型地层进行统计，通过理论及数值沉降变形分析，得出不同区域铁路路基在不进行地基处理的情况下路基沉降变形规律，给出在工期条件容许下的地基处理建议。

Study on the Typical Foundation Soil Partition and Deformation Characteristics of Subgrade Settlement in North China

Soft soil and mollisol are widely distributed in North China. The difference of soil origin causes the big difference of the deformation characteristics. In recent years, a large number of new railways have been built in this area. Based on the statistics of the different partition stratum of the typical railway project, through the theory and numerical analysis of settlement, the different regional railway subgrade settlement deformation law without foundation treatment is obtained. The foundation treatment advices are given under the time limit of a project.