考虑侧向变形的路堤沉降一维法计算修正系数研究

软土路基中三维固结效应以及路堤的应力重分布产生的水平推力，引起的侧向变形是不容忽视的。通过非线性有限元计算，分别给出了一般粘性土和软土的沉降修正系数式子，它们是在路堤高度及路基土体孔隙比之间直接建模的，主要适用于均质或近似均质的路基。实例计算表明：经过修正后，沉降一维计算结果基本上可考虑到土体的侧向变形，且修正后的沉降比较接近实测值，在工程上具有一定的参考价值。

Study on modified factors for 1-D calculation of embankment settlement considering soil lateral deformation

For the three-dimensional consolidation effect impersonal existence of roadbed and the horizontal thrust from stresses re-distribution of embankment, soil lateral deformation should not be neglected. The modification formula based on height of embankment and void ratio of roadbed for common clay and soft soil is severally given through nonlinear finite element method, which are mainly applicable to uniform or non-uniform roadbed case. It is tested that, using this method, the settlement one-dimensional calculated results can be in consideration of soil lateral displacement with engineering example. Furthermore, the modified settlement is more closed to measurement. In a way, those formulas have definite inference value in practice.