Research on Settlement Law of high salt sandy soil subgrade in Saline Lake area

The post construction settlement of the railway subgrade is affected by many factors usually. Based on the Xitieshan to North Hobson local railway as the engineering background, this paper discusses the settlement law of the high salt soil subgrade, the reasonable numerical model were used to fit the measured data, and compares the calculated results and the measured data, then the settlement of subgrade is summarized in this area. The research shows that the exponential function fitting model can better reflect the rule of roadbed settlement in the area, which can provide a reference for the design and construction of the same type of railway subgrade in the saline lake area.