结构层厚度和模量对全厚式沥青路面设计指标的影响

Influence of thickness and modulus of structural layeron design index of Full Depth asphalt pavement

采用法国标准,利用法国结构设计软件ALIZE,进行全厚式沥青路面结构设计,并通过对路面结构层的厚度和模量进行正交试验设计,分析了全厚式沥青路面不同厚度处应变的变化规律,揭示了两个参数对全厚式沥青路面设计指标的影响规律。结果显示,路面承台模量对路面结构设计力学指标的影响远高于基层和面层,基层厚度对设计指标的影响较磨耗层和联结层更为显著。

In this paper,the French standard and French structural design software alize are used to design the full thickness asphalt pavement structure.Through the orthogonal test design of the thickness and modulus of the pavement structure layer,the change rule of the strain at different thickness of the full thickness asphalt pavement is analyzed,and the influence rule of two parameters on the design index of the full thickness asphalt pavement is revealed.The results show that the influence of cushion cap modulus on the design mechanical index of pavement structure is much higher than that of base course and surface course,and the influence of base course thickness on the design index is more significant than that of wearing course and connecting course.