In order to prolong lifespan of pavement and improve the utilization ratio of pavement,from the per-spective of retarding damage of staple wheel-path pavement, a method of balancing axle load distribution by lane line translation was proposed.With traffic composition and volume on 15 stripes of Tianjin-Jincheng highway's car-riageway detected,Gaussian fitting were used to get frequency distribution of different vehicle types,and then inte-grated wheel-path distribution of vehicle types and distribution coefficients of accumulated standard axles frequency on the wheel-path were obtained.The area method and the analytical method of determination of possible transla-tional amount were proposed,according to the function relationship of translational amount and cumulative wheel-path distribution of pre-translation/post-translation,and the translational amount was obtained considering require-ments of road cross-sectional layout.According to superposed effects of the staple wheel-path and the nonstaple wheel-path of pre-translation/post-translation damage simultaneously,a lane line translation model based on the ac-cumulated standard axles on the wheel-path was obtained,and then translational timing and pavement life were de-rived.The example shows that prolonged lifespan of pavement arrived to 20%and 50%respectively when transla-tional amount were 25 cm and 50 cm.Lane line translation can balance load distribution and improve the use effi-ciency of pavement,which can provide reference for highway pavement maintenance and management.%为延长路面总体寿命和提高路面利用效率,从减缓路面主轮迹带破坏的角度,提出通过平移车道标线位置均衡轴载分布的方法.实地调查了津晋高速行车道上15条条带的交通组成及流量,运用高斯拟合得到车型频率分布函数,得到综合车型轮迹分布和累计标准轴次分布系数计算方法;依据平移前/后平移量与累计轮迹分布的函数关系,提出判定可能平移量的面积法和解析法,并考虑道路横断面的布置要求确定平移量;依据平移前/后主轮迹带与非主轮迹带的叠加作用效果同时达到极限破坏状态,建立基于轮迹带累计标准轴次的车道标线平移模型,可推导满足指标下限的平移时机和路面使用寿命.实例表明,当平移量为25 cm、50 cm时,路面使用寿命可分别延长20%、50%以上.车道标线平移可均衡路面荷载分布,可提高路面利用效率,为高速公路路面养护管理提供参考.
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