级配碎石作为路面柔性结构层,主要缺陷在于易产生较大的塑性变形,其本质是粒料之间的剪切变形,而弯沉和层底拉应力指标不足以保证级配碎石不发生剪切破坏。本文结合具体实例,分析了城市高等级公路级配碎石基层配合比设计,并对其施工技术及质量检测进行了详细阐述和总结。 Graded gravel as the pavement flexible structure layer, the main defect is easy to produce large plastic deformation, its essence is shear deformation between the pellets, and deflection and the bottom of the tensile stress index is not enough to ensure the graded broken stone Shear damage occurred. In this paper, the concrete example is given to analyze the mix design of graded-stone base in urban high-grade highway, and its construction technology and quality inspection are elaborated and summarized.