Study on Settlement Characteristics and Prediction Models of Airport High Fill Engineering: A Case Study of a Large Airport

The study focuses on the high fill project of a large-scale airport , conducting systematic settlement monitoring and analysis to explore the settlement characteristics of the airport high fill works and compare the applicability of various settlement prediction models. The results indicate that: (1) The settlement of the fill body exhibits distinct spatial distribution characteristics, with the maximum settlement observed in the runway area; (2) The settlement rate gradually decreases over time, indicates that the fill body is gradually stabilizing; (3) Layered settlement monitoring reveals depth-dependent settlement behavior within the fill body; (4) Among three prediction models compared, the power function model demonstrates the best overall fit, with R² values generally higher than the values of the hyperbolic and logarithmic function models; (5) The 30-year post-construction settlement prediction based on the power function model shows that both the maximum settlement and maximum differential settlement meet the design requirements. The findings provide scientific evidence and technical support for settlement control and prediction in airport high-fill projects.