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沉降预测是修建在软土地基上的高速公路迫切需要解决的问题。概述了现有的各种传统和新的沉降预测方法,并分析各预测方法的优缺点,指出影响各预测方法精度的主要因素有交通荷载及超载、软土路基沉降变形机理,以及沉降观测数据典型性与采集时间序列长度。通过比较分析表明,有限元方法在沉降计算时的独特优势越来越明显,用有限元方法来预测软土路基沉降是个很好的发展方向。
Subsidence prediction is an urgent problem to be solved on expressway built on soft soil foundation. The existing traditional and new settlement prediction methods are summarized. The advantages and disadvantages of each prediction method are analyzed. The main factors affecting the accuracy of each prediction method are traffic load and overloading, settlement and deformation mechanism of soft soil subgrade and settlement observation data Typicality and acquisition time series length. The comparative analysis shows that the unique advantages of finite element method in settlement calculation are more and more obvious. It is a good development direction to predict the settlement of soft soil subgrade by finite element method.