车辆轴载偏差对路面使用寿命的影响

The effect of axle load difference on pavement life

路面上实际行驶的车辆其荷载的大小与路面设计时所采用的理论值有一定的偏差，偏差的大小直接影响车辆对路面的损害程度和路面的使用寿命。目前，在路面设计中尚没有考虑车辆实际荷载与设计荷载之间的差异这问题。轴载不同对路面造成的损害也不同，而这种损害与轴载的大小呈非线性关系，现有的轴载换算公式不能解决这一问题。文中分析了车辆轴载偏差对设计轴载换算数量和路面使用寿命的影响，提出了解决这一问题的方法。

There are great differences between the axle load used in the pavement design and the load moving at the actual pavement. The difference affects the degree of pavement damage due to axle load and the pavement life. The difference is not yet considered in present pavement design. Different axle load causes different pavement damage, and the damage is not linear with the magnitude of axle load. In this paper the effect of axle load difference on the equivalent axle load number and the pavement life was analyzed.