交通荷载作用下软土路基沉降有限元分析

Finite element analysis of the settlement of the soft roadbed under traffic load

基于典型的路基路面体系设计方法，利用有限元分析软件ABAQUS分析交通荷载作用下软土路基沉降与荷载振动的关系，并对比了交通荷载与静荷载作用下路基的变形特性。结果表明，可以通过测定各点振动振幅来推测出该点沉降，也可以通过测定各点沉降来评价交通荷载对环境的振动影响；交通荷载作用下路基的变形特性与静荷载作用下不同，且交通荷载作用下路基沉降是静荷载下的沉降的3～4倍。

Based on the design of the typical pavement and roadbed system, by using the finite element program ABAQUS, the relationship between the settlement of the soft subsoil under traffic load and the vibration has been analysed, and the deformation characteristics of the roadbed under traffic load are compared with that under the static loading. The results indicate that through determining the amplitude of each vibration the settlement could be speculated, and through determining the settlement the influence of the environment vibration induced by traffic load could be appraised; the deformation characteristics of the roadbed under traffic load is difficult with it under the static loading, and the settlement of the roadbed under traffic load is there or four four times longer than its under the static loading.