| 沥青混合料疲劳损伤非线性演化统一模型试验研究 |
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| 引用本文： | 吴旷怀,张肖宁.沥青混合料疲劳损伤非线性演化统一模型试验研究[J].公路,2007(5):125-129. |
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| 作者姓名： | 吴旷怀 张肖宁 |
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| 作者单位： | 1. 广州大学土木工程学院,广州市,510006
2. 华南理工大学交通学院,广州市,510640 |
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| 摘 要： | 通过相同条件下一组大样本沥青混合料应变控制小梁弯曲疲劳试验,将弯曲疲劳循环次数和对应循环次数的模量无量纲化后,拟合得到了一组疲劳损伤和对应循环次数比的关系曲线,发现各曲线之间非常相似,尽管各试件的疲劳寿命相差较大。对曲线族进一步分析,归纳得到了此沥青混合料疲劳损伤的非线性演化的统一模型。
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| 关 键 词： | 沥青混合料 疲劳损伤 非线性演化 试验研究 |
| 文章编号： | 0451-0712（2007）05-0125-05 |
| 修稿时间： | 2007-01-12 |
Experimental Research on Uniform Model for Nonlinear Evolution Equation of Fatigue Damage of Asphalt Mixture |
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| WU Kuang-huai,ZHANG Xiao-ning.Experimental Research on Uniform Model for Nonlinear Evolution Equation of Fatigue Damage of Asphalt Mixture[J].Highway,2007(5):125-129. |
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| Authors: | WU Kuang-huai ZHANG Xiao-ning |
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| Institution: | 1. College of Civil Engineering, Guangzhou University, Guangzhou 510006, China; Institute of Road Engineering, South China University of Technology, Guangzhou 510640, China |
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| Abstract: | Four point bending beam fatigue tests are carried out with a large sample under the sameconditions in this paper,and relation of each specimen between stiffness ratio(SR) and cycle ratio(CR) isfitted from the fatigue testing results.It is found that the shapes of SR-CR curves are all similar,althoughthe differences of fatigue life among the specimens are very large.Furthermore,a uniform model fornonlinear evolution equation of fatigue damage of the asphalt mixture is obtained based on statisticalanalysis. |
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| Keywords: | asphalt mixture fatigue damage nonlinear evolution equation experimental research |
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