| 沥青路面表面裂纹扩展模拟及影响因素分析 |
| |
| 引用本文： | 毛成,邱延峻,李云鹏.沥青路面表面裂纹扩展模拟及影响因素分析[J].西南交通大学学报,2004,39(4):437-441. |
| |
| 作者姓名： | 毛成 邱延峻 李云鹏 |
| |
| 作者单位： | 石油大学,北京,机电工程学院,北京,102249 |
| |
| 基金项目： | 教育部高等学校博士学科点专项科研基金资助项目(20020613007) |
| |
| 摘 要： | 用基于线弹性断裂力学的有限元法，计算了3种深度路面表面裂纹分别在5种载荷(工况)作用下的应力强度因子及裂纹起裂角，模拟了表面裂纹向下扩展的路径，并分析了路面结构层组合和温度对沥青路面表面裂纹扩展的影响．结果表明，温度、结构层厚度和面层弹性模量对裂纹扩展有明显的影响，且表面裂纹深度越大，影响越显著．
|
| 关 键 词： | 沥青路面 表面裂纹 裂纹扩展路径 应力强度因子 数值模拟 |
| 文章编号： | 0258-2724(2004)04-0437-05 |
Simulation of Surface Crack Propagation in Asphalt Pavements and Analysis of Its influential Factors |
| |
| MAO Cheng,QIU Yan-jun,LI Yun-peng.Simulation of Surface Crack Propagation in Asphalt Pavements and Analysis of Its influential Factors[J].Journal of Southwest Jiaotong University,2004,39(4):437-441. |
| |
| Authors: | MAO Cheng QIU Yan-jun LI Yun-peng |
| |
| Institution: | MAO Cheng~1,QIU Yan-jun~1,LI Yun-peng~2 |
| |
| Abstract: | By using the finite element method (FEM) based on theory of linear elastic fracture mechanics, stress intensity factor and crack initiation angle were calculated for surface cracks in asphalt concrete (AC) pavements with three different crack depths under five load cases. Top-down propagation path in AC pavements was simulated and the effects of pavement structure and temperature on the surface crack propagation were analyzed. The analytical results show that crack propagation is obviously influenced by temperature, thickness of pavement structure and elastic modulus of AC, and the degree of influence increases with the increase of surface crack depth. |
| |
| Keywords: | asphalt pavement surface crack crack propagation path stress intensity factor numerical simulation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
