山区高速公路陡坡上路基稳定性分析方法与治理对策

Analysis and Remediation of Stability of Freeway Roadbed on Steep Slope in Mountainous Region

结合湖南某山区高速公路陡坡上路基工程的特点,深入探讨了山区陡坡上路基破坏机理与破坏模式,在综合运用极限平衡分析与离散单元分析方法基础上,探讨了山区陡坡上高速公路路基稳定性的分析方法,并在深入研究高速公路路基支护型式与支护效果的基础上,提出了对山区高速公路陡坡上路基采用反压护道加固路堤、挡土墙加固路基、土工格栅加筋法加固路堤等治理措施与对策。

The failure mechanism and modes of roadbed on steep slope in mountain area are deeply discussed by combining with the characteristics of the roadbed engineering of a certain freeway in Hunan province, and then the algorithm for analysis of stability of the roadbed on the steep slope in mountain district is probed based on analysis of limit equilibrium and discrete element method. Finally, the reasonable countermeasures such as loading berm consolidated embankment, retaining wall consolidated roadbed and geogrid reinforced embankment, for disposal of the roadbed on the steep slope in mountain district are put forward on the basis of that the modes and effect for disposal of the roadbed of freeway are investigated.