中文摘要：

为更准确地进行重载沥青路面轴载换算，调查了货车的轴重及胎压分布，发现了两者之间存在的对应关系．改变轴重和胎压测试了轮迹，轮胎接地压强和接地半径均随轴载的增加而增加，荷载中心距保持不变．测试了移动车辆的轮胎接地压强分布，发现在全轮迹范围内基本属于均匀分布．根据重载车辆轮迹及轮胎接地压强分布，得到了重载道路荷载作用图式．采用该图式，并充分考虑路面结构的非线性，推导出基于弯沉等效、弯拉等效和土基顶面压应变等效的轴载换算公式．

英文摘要：

In order to get the accuracy axle load conversion formula for asphalt pavement, the inquiry about the axle load and the tire＇s inflation pressure of trucks was made, it was found that the inflation pressure of the tire varied with the axle load. One obtained the footprints of the vehicles with different axle loads and the inflation pressures of tires. It was found that the average contact pressure and the contact area increased with the axle load, and the distance between the centers of the two adjacent footprints stayed unchanged. It was also found from field tests that the distribution of contact pressure between the pavement and the tire of moving vehicle was uniform. On the basis of the researches above, the simplified load figures used in the design of pavements under heavy-load were gotten. A- dopting the simplified load figures and considering the nonlinearity of the asphalt pavement under heavy-load, the author obtained the axle load conversion formula based on deflection equivalence, tensile stress equivalence and compressive stress on the top of subgrade equivalence respectively.