引言近年来交通量和载重量的迅速增加,不断对工程师提出精心改进路面分析和设计方法的新要求。通常使用两种类型的路面。柔性路面是不同层次有着不同材料的多层体系,通常把各层假定为在水平方向无限扩展。由于层与层之间的弹性模量不会急剧变化,所以轮载逐渐地向下面各层分布。另一方面,刚性路面则可看作是在弹性基础上的有限或无限平板,这是由于较高的弹性模量和足够的厚度可确保轮载通过路面的弯曲作用分布于路基 INTRODUCTION The rapid increase in traffic and load in recent years has led engineers to come up with new requirements for meticulous improvement of pavement analysis and design methods. Two types of pavement are commonly used. Flexible pavements are multilayered systems with different materials at different levels and are usually assumed to extend infinitely in the horizontal direction. As the elastic modulus between the layers does not change drastically, the wheel load is gradually distributed to the lower layers. On the other hand, rigid pavement can be regarded as a limited or infinite plate on the basis of elasticity, which is due to the higher modulus of elasticity and sufficient thickness to ensure the distribution of the wheel load through the pavement on the roadbed