|
|||||
|
|
| 沥青路面裂纹扩展数值模拟及影响因素分析 | |
| 引用本文： | 毛成,邱延峻,李云鹏.沥青路面裂纹扩展数值模拟及影响因素分析[J].重庆交通大学学报(自然科学版),2006,25(3):36-39. |
| 作者姓名： | 毛成 邱延峻 李云鹏 |
| 作者单位： | 1. 西南交通大学,土木工程学院,四川,成都,610031;四川省交通厅公路规划勘察设计研究院,四川,成都,610041 2. 西南交通大学,土木工程学院,四川,成都,610031 3. 石油大学(北京)机电工程学院,北京,102249 |
| 基金项目： | 高等学校博士学科点专项科研项目 |
| 摘 要： | 应用线弹性断裂力学理论结合同时考虑交通与温度载荷的有限元方法来研究沥青路面裂纹扩展路径.采用1/4等参奇异性单元模拟裂纹尖端的应力奇异性,运用窗口移动技术模拟裂纹扩展路径,并发展了沥青路面裂纹扩展模拟程序.应用该程序模拟了不同荷载作用位置下路面结构中表面和基层底面裂纹的扩展情况,同时研究了路面结构层模量组合对沥青路面裂纹扩展的影响.模拟表明,该方法能较好地模拟裂纹扩展行为,有助于更好地了解沥青路面的开裂行为. |
| 关 键 词： | 沥青路面 裂纹扩展路径 应力强度因子 温度应力 数值模拟 弹性模量 |
| 文章编号： | 1001-716X(2006)03-0036-04 |
| 修稿时间： | 2005年4月25日 |
Numerical simulation of asphalt pavement crack propagation and analysis of influence factors |
|
| MAO Cheng,QIU Yan-jun,LI Yun-peng.Numerical simulation of asphalt pavement crack propagation and analysis of influence factors[J].Journal of Chongqing Jiaotong University,2006,25(3):36-39. | |
| Authors: | MAO Cheng QIU Yan-jun LI Yun-peng |
| Abstract: | In order to study asphalt pavement crack propagation paths,the linear elastic fracture mechanics(LEFM) theory and finite element method(FEM) that incorporate traffic load and temperature stress are used in this paper.Using quarter point collapsed singular isoparametric element,the stress singularity at the vicinity of crack tip is simulated.The crack propagation paths are simulated by using window moving technique(WMT).Based on these,an asphalt pavement crack propagation paths simulation(APCPPS~(2D)) program is developed.Under the various load location cases,the crack propagation behavior of surface crack and base bottom crack are simulated using APCPPS~(2D).The influences of layer modulus combination on pavement cracking are studied.The simulation results indicate that this method can simulate crack propagation paths and help to understand crack behavior of asphalt pavement in a better way. |
| Keywords: | asphalt pavement crack propagatoin path stress intensity factor temperature stress numerical simulation elastic modulus |
| 本文献已被 万方数据 等数据库收录！ | |