| 沥青路面反射裂缝问题的损伤力学守恒积分 |
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| 引用本文： | 唐雪松,郑健龙.沥青路面反射裂缝问题的损伤力学守恒积分[J].应用力学学报,2004,21(2):91-94. |
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| 作者姓名： | 唐雪松 郑健龙 |
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| 作者单位： | 1. 长沙交通学院,长沙,410076;华东理工大学上海,200237
2. 长沙交通学院,长沙,410076 |
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| 基金项目： | 国家自然科学基金 (项目编号 :5 0 1780 12 )，湖南省自然科学基金 (项目编号 :0 2JJY2 0 68)联合资助 |
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| 摘 要： | 基于损伤力学理论，建立了沥青路面反射裂缝问题的损伤力学守恒积分，证明了在反射裂缝形成过程中应变能密度的守恒性。在此基础上，导出了预估反射裂缝形成寿命的简便方法与公式。本文研究成果对于沥青路面设计与旧路补强设计具有一定理论指导意义。
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| 关 键 词： | 沥青路面 反射裂缝 损伤力学 守恒积分 疲劳寿命预估 |
| 文章编号： | 1000-4939(2004)02-0091-04 |
Conservative Integral of Damage Mechanics for the Reflective Cracking in Asphalt Pavements |
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| Tang Xuesong , Zheng Jianlong.Conservative Integral of Damage Mechanics for the Reflective Cracking in Asphalt Pavements[J].Chinese Journal of Applied Mechanics,2004,21(2):91-94. |
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| Authors: | Tang Xuesong Zheng Jianlong |
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| Institution: | Tang Xuesong 1,2 Zheng Jianlong 1 |
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| Abstract: | The conservative integral of damage mechanics for the reflective cracking in asphalt pavements is established based on the elastic damage theory developed by the authors. It is demonstrated that the strain energy density is conservative during the damage process. A practical method for predicting the reflective crack initiation life is developed, and the corresponding formula in the closed form is obtained. The results provide the guidance for the asphalt pavement design and the old pavement reinforcement design. |
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| Keywords: | asphalt pavement reflective crack damage mechanics conservative integral fatigue life prediction |
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