The effects of the existing asphalt layer on the stress of UTW have been analyzed in elastic three layer system.
利用弹性三层体系，分析了沥青层对应力的影响规律。
Fatigue is one of criterions in asphalt concrete pavement design, failure of asphalt concrete fatigue has correlation with the magnitude of tensile strain of asphalt layer bottom.
疲劳是沥青路面设计标准之一，沥青混凝土的疲劳失效与沥青层底拉应变值的大小相关。
Based on the model of simplified road, the effects of different double-wheels sizes of lorry on the bottom strain of asphalt layer were analyzed by the method of numerical calculation.
以简化道路模型为对象，以数值计算方法为手段，研究了载重货车不同单边双轮轮距对沥青面层层底应变的影响。
This paper also discusses the prevention treatment measures of crosswise cracking in asphalt layer materials, cohesion between the layers and construction and maintenance of semi-rigid base.
从面层材料、层间粘结、基层施工及养护等方面提出横缝的防治措施。
Each asphalt layer assume different function, performance of the designed asphalt mixture should be adapted to their respective structure layer functional requirements.
各沥青结构层承担不同功能，设计的沥青混合料性能应适应各自结构层层位功能需要。
Each asphalt layer assume different function, performance of the designed asphalt mixture should be adapted to their respective structure layer functional requirements.
各沥青结构层承担不同功能，设计的沥青混合料性能应适应各自结构层层位功能需要。
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