NEW MODEL AND METHOD FOR FORECASTING POST-CONSTRUCTION SETTLEMENT OF LOESS-FILL EMBANKMENTS
黄土路堤工后沉降预测新模型与方法

Post-construction settlement is one of the main issues in high grade railway construction in loess areas. The effective solution to the problem is to find the post-construction settlement law for the guidance to the design and construction based on the field monitored data. After analyzing the large quantities of monitored data from the second line of Lanzhou--Wuwei Railway in loess areas, a new model is put forward. The hyperbolic and exponential models usually used as prediction were also applied to the forecasting settlements based on the same monitored data with the presented new model. The results show that the prediction error is smaller than that with usual models~ and the forecasting data agree well with the monitored data. The new model presents a new method for analysis and prediction of settlement and it is found to be a good reference to post-construction settlement of embankment in loess areas.