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从实际观察到的一种高速公路半刚性基层沥青路面的破坏现象出发,对现行沥青路面结构设计方法中的结构破坏模型进行了分析。发现,路面底基层不会先于稳定粒料基层出现疲劳破坏。高速公路沥青路面结构破坏常以水泥稳定碎石或二灰稳定碎石基层的破坏为主要形式。由此,文章提出对现行沥青路面结构设计方法假设进行了分析计算,认为假设稳定细粒土路面底基层与基层界面为光滑可能更加与实际情况吻合。
Based on the observed damage of asphalt pavement in semi-rigid basement of expressway, the structural failure model of existing asphalt pavement structure design method is analyzed. Found that the sub-base pavement will not be stable before the grassroots fatigue damage. Asphalt pavement structure damage often highway cement stabilized gravel or lime-lime stabilized gravel base damage as the main form. Therefore, the article puts forward the assumptions of the existing asphalt pavement structure design method and analyzes that the assumption that the interface between the base layer and the base layer of the stabilized fine grained soil pavement is smooth may be more in line with the actual situation.