路堤荷载作用下硬壳层软土地基的破坏模式分析

摘要

针对路堤荷载作用下上覆硬壳层的软土地基的破坏模式,依托某沿海高速公路工程,基于大型通用有限元分析软件ABAQUS,对软土硬壳层地基路堤的分层填筑过程进行了数值分析.研究了硬壳层软土地基在路堤荷载作用下塑性区开展的过程及土中应力、应变特性,总结分析了其破坏模式.%Aiming at the failure mode of soft soil foundation with overlying hard crust under the action of embankment load,the process of filling in layers for such embankment of certain coastal highway was analyzed numerically with large universal FEM software ABAQUS.Thus the development of plastic zone thereof and the stress,strain behavior therein were studied,and the failure mode was generalized,offering basis for the study of bearing capacity and failure mode of soft soil foundation with overlying hard crust,as well as the construction of such foundation.