沥青路面的层间接触模型研究

Interlayer Contact Models of Asphalt Pavement

沥青路面是我国高等级公路与市政道路的主要路面形式,路面各层间接触力学模型是进行沥青路面力学分析与设计的基础.传统的接触模型把沥青路面各层看作是平整且接触的,这并不符合实际情况.沥青路面各层是粗糙且不完全接触的,各层粗糙峰的高度服从高斯分布(正态分布),该文应用概率分析的方法对层间接触的实际情况进行了力学模拟,计算出不论是在弹性接触还是塑性接触情况下,沥青路面各层间的接触面积与外荷载都是成正比的.

Asphalt pavement has been widely used in highway and municipal road. Interlayer contact mechanical model is regarded as the foundation of mechanical analysis and design. In traditional contact models, interlamination of the asphalt pavement is taken as smooth contact, which is not in accordance with the actual situation. In fact, each layer of asphalt pavement is rough with incomplete contact. The height of the rough peak of each layer is in Gaussian distribution（ normal distribution）. The method of probability is adopted in this paper to simulate interlayer contact of the actual situation. It is revealed that the contact area of each layer of asphalt pavement is proportional to the load, whether it is in the case of elastic or plastic contact.