路基是公路的重要组成部分。它既是路线的主体,又是路面的基础。路基质量的好坏,关系到整个公路的质量及汽车的正常行驶。因此,随着公路等级的提高,对路基的作用越来越重视,要求也越来越高。 Subgrade is an important part of the road. It is both the main route and the foundation of the road. Subgrade quality is good or bad, related to the quality of the entire road and the normal driving of the car. Therefore, with the improvement of highway level, the role of roadbed is paid more and more attention, and the requirements are getting higher and higher.