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老路堤的加宽是高等级公路建设中的重要课题,该文采用摩尔-库仑理想弹塑性有限元方法对新老路堤的相互作用机理进行研究,应用岩土工程专业软件Plaxis对老路的加宽过程进行了有限元数值模拟。分析表明:加宽部分路堤的填筑将会使得老路中心上抬,路肩点发生较大附加沉降,引起老路路肩与路中心间差异沉降的产生,极易导致对原路堤、路面破坏,降低道路等级,因此为确定实际地基处理施工中重点处置区的位置提供了一些理论参考。
The widening of the old embankment is an important issue in the construction of high-grade highways. In this paper, the Mohr-Coulomb ideal elastic-plastic finite element method is used to study the interaction mechanism between the old and the new embankments. The application of Geotechnical Engineering software Plaxis to the widening of the old road The process of finite element numerical simulation. The analysis shows that widening the embankment filling will cause the center of the old road to be lifted and large additional settlement will occur on the road shoulder and shoulders, causing the differential settlement between the shoulder and the center of the old road, which can easily lead to the destruction of the original embankment and the road and the reduction of the road Therefore, it provides some theoretical references for determining the location of the key disposal areas in the actual foundation treatment.