面层模量对沥青路面结构受力特性影响分析

面层模量是沥青路面结构设计的重要参数。为分析面层模量对沥青路面结构受力特性的影响，采用有限元软件计算各面层模量变化、模量比对典型半刚性基层沥青路面结构层底拉应变、面层内部剪应力、基层层底拉应力和土基顶压应变等力学特性的影响。分析结果表明:各面层模量对沥青路面结构的受力有显著影响，路面结构设计时应综合考虑选择各面层模量及面层之间模量比。

Analysis on Effect of Surface Modulus on Force Characteristics of Asphalt Pavement Structure

Surface modulus is an important parameter for destgn ox aspnmt paveme,~L ~ analyze the effect of surface modulus on force characteristics of asphalt pavement structure, the finite element software was used to study that how the modulus change in the surface layers and the modulus ratio thereof affect the mechanical properties of typical semi-rigid base asphalt pavement structure, including tensile strain at the bottom, shear stress in the surface layers, tensile stress at the base bottom and compressive strain at the top of soil base. The results show that the modulus in surface layers has significant influence on force characteristics of asphalt pavement structure, hence in the design of pavement structure the modulus in surface layers and the modulus ratio between these layers should be selected through comprehensive considerations.