软土路基侧向变形影响因素研究

在软土地区修筑公路,从路基沉降和施工中稳定控制两方面考虑,地基侧向变形的研究都是十分重要的。影响软土路基侧向变形的主要因素有:地基处理型式、土层结构、软土厚度和路堤高度。本文分析这4个影响因素变化时所对应的软土路基侧向变形特点,比较它们各自的地基侧向变形-时间-深度曲线形态、侧向变形大小、最大侧向变形发生位置以及地基中某点侧向变形收敛速率,并对这一系列现象进行理论分析,得出一些区域性结论。

Study of Influence Factors of Lateral Deformation of Soft Soil Foundation under Embankments

The lateral displacements developed in soft soil foundations under embankments were studied,because it can be considered a good indicator of the stability and influence the prediction of settlements during and after the construction of embankments.There are some main influence factors,which are the manners of improvement of foundation,soil layer structure,soft soil depth and embankment height.The characters of lateral deformation of soft soil foundation are analyzed when those four factors are changed independently.Some indexes are compared and studied,such as the curve configuration of lateral deformation of foundation and time and depth,the magnitude of lateral deformation,the position of the maximum lateral deformation and the convergence speed of lateral deformation at certain location in the foundation,and some area conclusions are gained.