中南大学学报（自然科学版）2016，Vol.47Issue(12)：4282-4290,9.DOI:10.11817/j.issn.1672-7207.2016.12.042
考虑材料正交各向异性时的沥青路面结构力学性能
Mechanical properties of asphalt pavement considering orthotropy of each layer materials
摘要
Abstract
Based on orthotropy theory, the anisotropy degrees of elastic modulus, Poisson’s ratio and shear modulus were defined respectively. Finite element calculations were carried out for one of typical asphalt pavement structure. The mechanical properties of pavement structure were analyzed when the three types of anisotropy degree varied simultaneously and alone. The analysis results indicate that the shear stress in asphalt surface course is only affected by the anisotropy between two directions of the plane of asphalt surface course. The anisotropy between two directions of the plane of base course has the greatest impact on the tensile stress at bottom of base course. The anisotropy between two directions of the subgrade plane has the greatest impact on surface deflection. Shear modulus anisotropy has little effect on surface deflection, Poisson’s ratio anisotropy has little effect on shear stress in asphalt surface course. Mechanical properties of pavement are greatly affected by elastic modulus anisotropy. The anisotropy between two directions of the plane of subgrade and pavement can not be ignored.关键词
正交各向异性/沥青路面/有限元/弹性模量/泊松比/剪切模量Key words
orthotropy/asphalt pavement/finite element/elastic modulus/Poisson’s ratio/shear modulus分类
交通工程引用本文复制引用
杨涛,郑健龙,关宏信,林淼,曾勇..考虑材料正交各向异性时的沥青路面结构力学性能[J].中南大学学报（自然科学版）,2016,47(12):4282-4290,9.基金项目
国家自然科学基金资助项目(51038002)(Project(51038002) supported by the National Natural Science Foundation of China) （51038002）
