| 摘要: |
| 采用有限元法，对倒装式基层沥青路面结构的力学行为进行分析.结果显示：倒装式基层沥青路面结构面层的底面受拉应力作用，随着轴载的增大，拉应力近似呈线性递增；倒装式基层沥青路面结构的底面拉应力明显小于典型半刚性基层沥青路面结构的底面拉应力，因而具有更好的抗裂性；级配碎石层底面始终处于受压状态. |
| 关键词: 道路工程 沥青路面 倒装式基层 力学行为 有限元 |
| DOI：103969/jissn1007 9629201404015 |
| 分类号: |
| 基金项目:贵州省交通科技项目（2010 122 008） |
|
| Mechanical Behavior Analysis of Asphalt Pavement Structurewith an Inverted Base Layer |
|
CHEN Shangjiang1, ZHANG Xiaoning2
|
|
1.School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, China;2.School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China
|
| Abstract: |
| The finite element method was used to analyze the mechanical behavior of asphalt pavement structure with an inverted base layer. Results show that the tensile stress takes effect at the bottom of surface layer for inverted base layer structure and with increase in load, the stress becomes linear increase approximately. The tensile stress at the bottom of base layer for inverted base layer structure is much smaller than that for typical semi rigid base layer structure, that means the inverted base layer structure has a better crack resistance than typical semi rigid base layer structure. Pressure stress always takes effect at the bottom of macadam layer. |
| Key words: road engineering asphalt pavement inverted base layer mechanical behavior finite element |
