面-基层间接触条件对半刚性沥青混凝土路面极限轴载的影响

通过对典型结构的理论分析．探讨沥青混凝土面层与半刚性基层之间的接触条件对半刚性沥青混凝土路面极限轴载的影响。计算与分析显示：对于给定的路面结构．存在一个极限轴载；面—基层间接触条件对极限轴载有重要影响，层间条件从连续到滑动的变化可以导致极限轴载降低大约40％；路面极限轴载与现实超载车辆轴载处于同一量级，所讨论结构在不同的接触条件下的极限轴载在183～399kN之间变化；虽然在某种意义上有破坏，半刚性沥青混凝土路面在极限轴载作用后不一定丧失承载能力。

Effects of Base-Surface Inter-Layer Contact Conditions of Semi-Rigid Asphalt Pavement on Ultimate Axle Load

The effects of surface-base inter-layer contact conditions of asphalt pavement on ultimate axle load are explored, through theoretical analyses on a typical structure. Results of the analysis show that there exists an ultimate axle load for a given pavement structure. The contact conditions between the surface and base have significant effects on the load. A change in contact conditions from continuous to sliding may result in a decrease in ultimate axle load by about 40%. The ultimate axle load of pavement is in similar level of that of common overload vehicles. In different conditions, the loads vary from 183 to 399 kN for the structure in discussion. Although it fails in a sense, the semi-rigid asphalt pavement may not lose its bearing capacity under the application of the ultimate axle load.