| 荷载与温度耦合下沥青路面结构复合型反射裂缝断裂分析 |
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| 引用本文： | 元松,张显安.荷载与温度耦合下沥青路面结构复合型反射裂缝断裂分析[J].长沙交通学院学报,2008,24(1):49-53. |
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| 作者姓名： | 元松 张显安 |
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| 作者单位： | 1. 上海市市政规划设计研究院,上海,200031
2. 湖北省公路局,科研所,湖北,武汉,430000 |
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| 摘 要： | 根据疲劳断裂理论，以ANSYS中APDL参数化命令为开发平台，编制出荷载与温度耦合作用下的沥青路面结构复合型反射裂缝疲劳扩展分析程序，并采用最大周向拉应力理论，判断复合型裂纹的扩展路径和方向，计算分析了荷载作用位置、层间接触状态、各结构层参数对裂缝扩展过程中复合型应力强度因子的影响变化规律．
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| 关 键 词： | 反射裂缝 疲劳断裂 复合型应力强度因子 |
| 文章编号： | 1000-9779(2008)01-0049-05 |
| 修稿时间： | 2007年10月24 |
Analysis of fracture on composite reflective crack under the loads of traffic and temperature load in asphalt pavement |
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| YUAN Song,ZHANG Xian-an.Analysis of fracture on composite reflective crack under the loads of traffic and temperature load in asphalt pavement[J].Journal of Changsha Communications University,2008,24(1):49-53. |
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| Authors: | YUAN Song ZHANG Xian-an |
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| Institution: | YUAN Song, ZHANG Xian-an (Shanghai Municipal Design and Research Institute, Shanghai 200031, China;Research Agency, Hubei Province Highway Bureau, Wuhan 430000, China) |
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| Abstract: | According to the theory of fatigue fracture,the program based on APDL parameters' command in ANSYS was firstly applied to analyze the fatigue-propagation of composite reflective crack in asphalt pavement under traffic and temperature loads.Moreover,maximal circumferential stress is used to identify the path and direction of composite crack fatigue propagation.And then,the impact of loading location,bonded states,material parameters on composite stress intensifying factor was indicated qualitatively. |
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| Keywords: | reflective crack fatigue fracture composite stress intensifying factor |
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