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软弱岩土挖方段路基换填深度一直是业内备受关注且未能较好解决的一个问题。文中基于路基路面协同设计的思想,结合贵州省高速公路所惯用的典型沥青路面结构,采用动变形控制方法对重交通条件下软弱岩土挖方段路基适宜换填深度展开研究,给出了软弱岩土挖方路基强度与换填深度之间的对应关系。研究成果可供路面结构和交通荷载相近的省份设计参考。
The depth of embankment replacement at the soft rock and soil excavation section has been a problem that has received much attention in the industry and has not been well resolved. Based on the idea of collaborative design of subgrade and pavement and the typical asphalt pavement structure commonly used in expressway in Guizhou Province, the dynamic deformation control method is used to study the suitable replacement depth of subgrade in soft rock and soil under heavy traffic conditions. Corresponding relationship between soil embankment embankment strength and replacement depth. The research results can be used as reference for the design of pavement with similar traffic load.