针对武广铁路客运专线某一区段路基的沉降观测数据,定量的计算出路基沉降范围值及沉降速率,并分析其原因;借助合理曲线回归方法,预测不同地基处理方式下路基的工后沉降量与路基填高的关系;以试验区段中的某一观测断面的沉降数据,探讨分析路基沉降时程发展规律及合理的放置观测期。 According to the subsidence observation data of subgrade in a section of Wuhan-Guangzhou Passenger Dedicated Railway, the settlement value and settlement rate of subgrade are calculated quantitatively, and the reasons are analyzed. With the help of rational curve regression method, post-construction settlement of subgrade under different ground treatment methods is predicted And the relationship between the subgrade and the subgrade filling height. Based on the settlement data of a certain observation section in the test section, the development rule of subgrade settlement time and the reasonable placement observation period are discussed.