本文以某路段大修工程为依托,分析了路面病害特点,并通过现场勘测分析了路面病害的主要原因。针对路基强度衰减的现状,提出了设置级配碎石过渡层的补强措施,通过一系列的研究提出过渡层的设置厚度为30cm。在进行现场轴载谱调查分析的基础上,对设计路面结构进行了验算,结果满足路面结构力学性能要求。 In this paper, a section of overhaul project as the basis, analysis of the characteristics of the road disease, and by site survey analysis of the main causes of road disease. Aiming at the status quo of subgrade attenuation, a set of reinforcement measures to set up the transition layer of graded gravel was put forward. According to a series of researches, the set thickness of the transition layer was 30cm. On the basis of investigation and analysis of on-site axle load spectrum, the design of pavement structure was checked and the results meet the requirements of pavement structure mechanics performance.