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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 4 0 % ;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～ 399k N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。
Through the theoretical analysis of the typical structure, the influence of the contact conditions between asphalt concrete pavement and semi-rigid base on the ultimate axle load of semi-rigid asphalt pavement is discussed. Computation and analysis show that there exists a limit axle load for a given pavement structure. The surface-base contact conditions have an important influence on the ultimate shaft load. The change of the inter-story condition from continuous to slip can lead to a reduction of the ultimate axle load by about 40% %; The ultimate axle load of the road surface is on the same order of magnitude as that of the actual overloaded vehicle, and the ultimate axle load of the structure under discussion varies between 183 and 399 kN under different contact conditions. Although in some sense, the semi-rigid Asphalt concrete pavements do not necessarily lose bearing capacity after the ultimate axle loading.