随着道路交通需求量的增加,许多旧路已经无法满足交通需求。改造扩建原来的道路,对提高道路的通行能力和改善交通运行条件有着重要意义。而在扩建道路的设计中,道路路线、路面和路基的设计对扩建工程的质量有着直接影响。本文以惠安大道工程为例,仔细分析了其路基路面的扩建设计方案。 With the increasing demand for road traffic, many old roads have been unable to meet the traffic demand. The reconstruction and expansion of the original roads have great significance for improving the capacity of roads and improving traffic conditions. In the design of expansion roads, the design of road routes, pavements and embankments has a direct impact on the quality of the expansion project. Taking Huian Avenue project as an example, this paper carefully analyzes the design scheme of subgrade expansion.