行车道设计宽度对沥青混凝土路面病害的影响及改进措施的探讨

Discussion About Impact of Driveway Projected Width on Asphalt Concrete Pavement Damages and Relative Improvement Measures

公路行车道宽度主要是根据设计行车速度确定的,现行《公路沥青路面设计规范》(JTG D50-2006)中只考虑了标准轴载的车道分布系数,并没有考虑轮迹在行车道内的分布规律。通过理论计算和实际比对,提出了行车道宽度同轮迹分布概率的规律,通过调整行车道宽度来改善路面受力状况,使车道内轮迹分布趋于均匀,减少路面病害,延长使用寿命,提高社会和经济效益。

The width of the driveway is primarily determined by the speed of the traffic. The current Specifications for Design of Highway Asphalt Pavement（JTG D50-2006）, however, has only taken into consideration the lane distributing coefficient of the standard axle carrying capacity, with no consideration of the rut distributing discipline on the driveway. On the basis of theoretical calculation and practical caparison, a new discipline of the rut distribution against driveway width is put forward. The conclusion is that by regulating driveway width, force on the pavement can be improved, thereby, rut distribution on the driveway is liable to be regular. With damages to pavement reduced and duration prolonged, both social and commercial profits will he increased.