| 宽应力比条件下的沥青混合料疲劳特性:改进的S-N模型 |
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| 引用本文： | 吕松涛,郑健龙.宽应力比条件下的沥青混合料疲劳特性:改进的S-N模型[J].公路交通科技,2011,28(8):1-6. |
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| 作者姓名： | 吕松涛 郑健龙 |
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| 作者单位： | 长沙理工大学交通运输工程学院,湖南长沙,410004 |
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| 基金项目： | 湖南省自然科学基金(10JJ4034); 湖南省教育厅科技项目(09c068); 道路结构与材料交通行业重点实验室(长沙)开放基金(kfj100202) |
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| 摘 要： | 为了避免采用分段函数的不方便性和弥补传统S-N疲劳方程分析宽应力比条件下沥青混合料疲劳特性的不足,揭示了应用反曲函数( Sigmoidal Function)描述宽应力水平下沥青混合料疲劳规律的适用性,通过原材料试验及配合比设计,确定了沥青混合料级配和最佳油石比,利用MTS810( Material Test Syst...
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| 关 键 词： | 道路工程 疲劳方程 反曲函数 沥青混合料 应力比 |
Fatigue Properties of Asphalt Mixtures under Broad Stress Ratio Conditions:Improved S-N Model |
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| L Songtao,ZHENG Jianlong.Fatigue Properties of Asphalt Mixtures under Broad Stress Ratio Conditions:Improved S-N Model[J].Journal of Highway and Transportation Research and Development,2011,28(8):1-6. |
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| Authors: | L Songtao ZHENG Jianlong |
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| Institution: | Lü Songtao,ZHENG Jianlong(School of Communication and Transportation Engineering,Changsha University of Science & Technology,Changsha Hunan 410114,China) |
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| Abstract: | For avoiding the inaccessibility of the segment function and make up the insufficiency of using traditional S-N fatigue equation to analyze the asphalt mixture's fatigue characters under broad stress ratio condition,the applicability of using sigmoidal function to describe the fatigue regularity of asphalt mixtures under broad stress ratio condition was revealed.The asphalt mixture gradation and optimum asphalt-aggregate ratio were determined by the tests of raw materials and the design of mixture proportio... |
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| Keywords: | road engineering fatigue equation sigmoidal function asphalt mixture stress ratio |
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