| 沥青路面轴载换算新方法 |
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| 引用本文： | 吴尚,郑长安. 沥青路面轴载换算新方法[J]. 中南公路工程, 2013, 0(2): 99-102 |
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| 作者姓名： | 吴尚 郑长安 |
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| 作者单位： | [1]湖南省高速公路管理局,湖南长沙410003 [2]湖南省交通科学研究院,湖南长沙410015 |
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| 摘 要： | 现规范沥青路面轴载换算是基于疲劳损伤等效建立的，采用的是线性疲劳损伤理论，这种换算方法无法考虑既有损伤对后续加载过程的影响，低估了荷载的作用，造成换算的不科学性，为了解决这个问题，论文通过沥青混合料疲劳试验，建立了沥青混合料的非线性疲劳损伤演化方程，据此，建立了基于非线性损伤理论的沥青路面轴载换算新方法。
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| 关 键 词： | 沥青混合料 疲劳 损伤 载重换算 |
New Methods of Axle Load Conversion for Asphalt Pavement |
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| WU Shang,ZHENG Changan. New Methods of Axle Load Conversion for Asphalt Pavement[J]. Central South Highway Engineering, 2013, 0(2): 99-102 |
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| Authors: | WU Shang ZHENG Changan |
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| Affiliation: | 1. Administration of Hunan Provincial Expressway, Changsha, Hunan 410003, China; 2. Hunan Communication Research Institute, Changsha, Hunan 410015, China) |
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| Abstract: | The current asphalt pavement axle load conversion is established based on the fatigue damage equivalent principle. The linear fatigue damage theory is used. This conversion method does not consider the impact of the current damage to the subsequent loading process. The loads action is underes- timated. The conversion method is unscientific. In order to solve this problem, the nonlinear fatigue damage evolution equation of the asphalt mixture is established by the asphalt mixture fatigue test in this paper, whereby the new asphalt pavement load conversion method based on the theory of nonlinear dam- age is obtained. |
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| Keywords: | asphalt mixture fatigue damage load conversion |
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