Abstract: An exponential function is induced to predict the piled supported bridge pier settlement during the construction of high-speed rail lines. This paper briefly introduces the characteristics of this exponential function and method to determine its parameters. This paper also presents a case history of the new construction of Congli railway bridge. Different models were used to predict the piled foundation settlement: index function model, Logistic function model as well as exponential function model. The results indicate that the exponential function have a better prediction of the foundation settlement.

Key words: Pile Supported Bridge Foundations, Settlement Prediction, Exponential Function Model, High Speed Rail