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应用了一种称为均匀试验设计的部分因子设计方法,开展了外界环境影响因素与沥青混合料疲劳性能之间的关系研究。考虑的外界环境影响因素包括应变水平、温度、加载频率和沥青老化水平。建立了外界环境影响因素与初始劲度模量、疲劳寿命、滞后角以及累计耗散能间的关系,发现外界环境影响因素与沥青混合料疲劳性能之间存在很好的相关性。结果表明,均匀试验设计是一种有效的试验设计方法,均匀试验设计可以在较少的试验次数下获得同等的试验效果。
A partial factor design method called uniform test design was applied to study the relationship between environmental factors and the fatigue behavior of asphalt mixture. Environmental factors considered include strain levels, temperature, loading frequency and asphalt aging. The relationship between external environmental factors and initial stiffness modulus, fatigue life, retard angle and cumulative dissipation energy is established. It is found that there is a good correlation between external environmental factors and fatigue performance of asphalt mixture. The results show that the uniform test design is an effective experimental design method, and the uniform test design can obtain the same test result with fewer test times.