The drainage design of urban highway deals with only the surface run-off. It presents a new drainage system considering the road surface, pavement structure, and subgrade (including green belt).
城市快速路排水设计，一般只考虑路面径流的做法，主要从道路表面、路面结构内部和路基(包括绿化带)三方面时排水进行综合介绍。
This thesis presents a research program on pavement and subgrade structure in the second phase of Guangbei Section of National Highway 108 (Beijing to Kunming).
本论文针对国道108线广元段广北二期工程的路面路基结构及使用状态进行了试验研究。
Therefore, it is very important and realistic for the pavement engineering to investigate the subgrade work area depth and its impact factors and the effect on the pavement structure.
因此，研究重载交通条件下路基工作区深度及相应的工程防治措施，对提高等级路道路结构使用寿命具有十分重要的工程和现实意义。
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