公路软基沉降双曲线预测法的进一步探讨

Further Research on the Hyperbolic Fitting Method for Prediction of Subgrad Settlement

双曲线法是一种重要的沉降预测方法。由于待定参数少且其易于确定 ,表示的沉降发展规律与许多实际工程相符合 ,因而广泛应用于公路软基沉降预测中。本文通过汕汾高速公路实例 ,对双曲线法进行公路软基沉降预测的影响因素进行了深入分析 ,并提出了改进沉降预测精度的措施。

Measured settlements of many structures built on soft ground develop with hyperbola of time, so the hyperbolic fitting method is a very important settlement prediction method It has small number of parameters which are determined easily by field observed settlements, and is widely used in settlement prediction of highway embankments on soft ground In this paper, through settlement prediction of the actual case of Shan-Fen expressway, some main factors in the hyperbolic fitting method are studied Some measures to improve predicting accuracy are proposed