中文摘要：

为了弥补现行沥青路面设计规范在利用传统疲劳方程进行疲劳设计时的不足,通过对沥青混合料进行不同程度的长期老化试验模拟了路面实际的老化程度。通过不同加载速率下的沥青混合料强度试验,揭示了强度随加载速率的变化规律。基于不同加载速率下的强度值,得到了与疲劳加载速率对应的疲劳真实应力比,建立了基于名义应力比和真实应力比的沥青混合料疲劳方程。基于名义应力比的疲劳方程曲线后延后与横坐标的交点远比1大,不具有后延性,而基于真实应力比的疲劳方程曲线可以后延到疲劳寿命为1的强度破坏点,统一了强度破坏与疲劳破坏的内在联系。建立了基于真实应力比的老化沥青混合料疲劳方程,疲劳方程曲线均通过（1,1）点。研究结果可为沥青路面设计时考虑老化效应的影响和抗拉强度结构系数的正确计算提供理论方法和依据。

英文摘要：

In order to make up for the fatigue design shortage of asphalt pavement design specitication in using traditional fatigue equation, the actual aging degree of asphalt pavement was simulated by different long term aging degree tests of asphalt mixture. The regularity of strength varying with loading rate was revealed mixture fatigue equations based on nominal and real stress ratios were created. The intersection of fatigue curve characterized by nominal stress ratio and abscissa axis is much larger than 1, it cannot be extended; while the fatigue curve characterized by real stress ratio can be extended to the strength failure point, which the fatigue life is 1, it unified the inner relationship between strength and fatigue failures. The fatigue equation of aged asphalt mixtures based on real stress ratio was established, all the fatigue curves （1, 1）. The results could provide the theoretical method and foundation for asphalt pavement design considering the aging effect and for the calculation of structure coefficient of tensile strength correctly.