沥青路面设计中增加抗车辙设计指标的探讨

分析我国现行沥青路面设计指标,指出弯沉指标不能有效的控制路面车辙,在吸收国外沥青路面设计指标的基础上,增加路基顶面压应变指标作为沥青路面抗车辙设计指标;在参考城市道路设计规范,分析路面剪应力分布的基础上,提出面层材料剪应力也可作为沥青路面抗车辙设计指标。

An Approach to Design Indexes for Addition of Rut-Resistance in Design of Asphalt Pavement

The paper analyzes the design indexes for asphalt pavement in force,points out that the deflection index can't effectively control the rut on pavement,therefore the index for increment of compressive strain on the top of subgrade is taken as design index for rut-resistance on the basis of design index for asphalt pavement abroad.At the same time on the basis of refering to design specification for municipal highway and analyzing the distribution of pavement shear stress,the paper poses the shear stress of surface material is also taken as design index for rut-resistance on asphalt pavement.