半填半挖路基边坡稳定性力学机制研究

Research on the Mechanical Mechanism of the Stability of Semi-filled and Semi-excavated Subgrade Slope

为保证公路路基建设水平,文章总结了半填半挖路基的类型和破坏模式,分析了填挖交界面力学参数选择方法。同时,以某高速公路连接线K2+100处的半填半挖边坡为研究对象,利用有限元软件建立计算模型,分析了填土宽度、填料含水量、土工格栅层数等对边坡安全系数和稳定性的影响,研究成果可供类似项目借鉴。

In order to ensure the construction level of highway subgrade,this paper summarizes the types and failure modes of semi-filled and semi-excavated subgrade,and analyzes the selection method of mechanical parameters of filling-excavation interface.At the same time,taking the semi-filled and semi-excavated slope at K2+100 of an expressway connecting line as the research object,the finite element software is used to establish the calculation model,and the influence of filling width,filling material water content,and geogrid layer number on the safety factor and stability of the slope is analyzed.The research results can be used for reference in similar projects.