路面的合理设计要求这样的计算方法:使它能绝对地保证其强度与耐久性。目前,在计算路面厚度时,计算方法的基本前提是路面的变形和土基的弹性性质,考虑汽车荷载的重复影响,对混凝土弯曲时的抗拉强度引入耐久性系数。在道路及试验路段的路面上得到了系统化的观测结果。根据 The rational design of the pavement requires such a calculation method that it can absolutely guarantee its strength and durability. At present, when calculating the thickness of pavement, the basic prerequisite of calculation method is the deformation of pavement and the elastic nature of soil foundation. Considering the repeated influence of vehicle load, the durability coefficient is introduced into the tensile strength of concrete during bending. Systematic observations were obtained on pavement of roads and test sections. according to