机场高填方工程沉降特性及预测模型研究

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

本文以某大型机场高填方工程为研究对象,通过系统的沉降监测与分析,深入研究了机场高填方工程的沉降特性,并对比了多种沉降预测模型的适用性。研究结果表明:(1)填筑体沉降呈现明显的空间分布特征,跑道区域沉降最大;(2)沉降速率随时间逐渐减小,表明填筑体逐步趋于稳定;(3)分层沉降监测揭示了填筑体内部沉降的深度依赖性;(4)在对比的三种预测模型中,幂函数模型整体拟合效果最佳,R2值普遍高于双曲线和对数函数模型;(5)基于幂函数模型的30年总沉降预测结果显示,最大沉降量和最大差异沉降均满足设计要求。研究成果为机场高填方工程的沉降控制和预测提供了科学依据和技术支持。

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.