| 半刚性基层沥青路面温缩裂缝的有限元分析 |
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| 引用本文： | 岳福青,杨春风. 半刚性基层沥青路面温缩裂缝的有限元分析[J]. 桂林工学院学报, 2004, 24(1): 52-54 |
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| 作者姓名： | 岳福青 杨春风 |
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| 作者单位： | 河北工业大学,土建学院,天津,300130 |
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| 摘 要： | 运用有限单元法计算了半刚性基层沥青路面温缩反射裂缝尖端的应力强度因子，并对影响其大小的各因素进行了敏感性分析，结果表明：基层和面层的模量、温缩系数增大会不同程度的导致裂缝尖端应力强度因子的增大；而增加面层厚度能有效降低温缩裂缝尖端强度因子．研究了行车荷载与温度荷载耦合作用下裂缝尖端应力场的强度特征，在这2种荷载共同作用时的裂缝扩展为复合型扩展．
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| 关 键 词： | 沥青路面 半刚性基层 温缩裂缝 有限元 强度因子 |
| 文章编号： | 1006-544X(2004)01-0052-03 |
| 修稿时间： | 2003-05-19 |
Semi-rigid asphalt pavement thermal reflective crack in finite element method |
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| YUE Fu-qing,YANG Chun-feng. Semi-rigid asphalt pavement thermal reflective crack in finite element method[J]. Journal of Guilin University of Technology, 2004, 24(1): 52-54 |
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| Authors: | YUE Fu-qing YANG Chun-feng |
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| Abstract: | The stress intensity factor of the semi-rigid asphalt pavement is calculated with the finite element method.Sensibility analysis is made on the parameters(modulus, thickness, thermal expansion coefficient) affecting the magnitude of the stress intensity factor. The character of the stress field on the top of the crack is analyzed in the case that both traffic load and temperature load are considered. It is shown that the temperature load and traffic load can produce a compound crack propagation model in the base. |
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| Keywords: | semi-rigid base thermal cracking finite element stress intensity factor compound crack propagation |
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