软弱地基沉降规律及预测方法

控制路基沉降是保证高速公路建设质量的关键。选取常用的双曲线法、指数曲线法和灰色系统法对软弱地基沉降进行预测，对比分析三种方法预测的沉降量的大小，提出适宜的软弱地基沉降预测方法。结果表明：对于沉降观测值来说，灰色系统法与三点法和双曲线法相比，误差稍微有些偏大，但对于最终沉降量的预测。灰色系统法预测结果比较安全、可信程度高，因此，应用灰色模型预测软弱地基沉降具有良好的适用性。

Soft Foundations Settlement and Its Prediction Methods

Proper control of the foundation settlement is essential to the highway construction quality. Commonly used hyperbola method, exponential curve method and grey system method are selected to predict the soft foundation settlement. Through comparing and analyzing the settling volume measured by the above three methods, proper prediction method for soft foundation settlement measurement is carried out. The result shows that through the measured value of settlement, grey system method deviates more than the other two methods. However, settling volume measured under grey system method is safer and more trustful. Thus, it is concluded that the grey system method is the most suitable to the soft foundation settlement measurement.