沥青路面结构转换基层合理模量范围研究

Research on Reasonable Modulus at the Grass-roots Level Range of Asphalt Pavement Structure Transformation

在路面标高不变的情况下,对旧路进行结构转换并实现其性能恢复。初步拟定面层结构参数,根据旧路标高和铣刨深度,确定冷再生基层结构厚度。根据AI沥青面层疲劳预估模型和重庆交通大学提出的冷再生半柔性基层疲劳寿命预估模型,提出了不同交通等级下的设计指标控制标准,并在有限元计算的基础上,得出了冷再生半柔性基层材料模量的参考范围。

Under the condition of constant road elevation, the structure of the old road was transformed and its performance was recovered. The surface structure parameters were preliminary drafted, and the thickness of cold regenerative base was determined according to the old road signs and milling planer depth. According to the AI asphalt surface fatigue forecast model and the fatigue life prediction model of cold recycling bitumen semi-flexible base presented by Chongqing Jiaotong University, the design index control standard under different traffic levels was presented, while on the basis of the finite element calculation, the modulus referenced range of the cold recycling semi-flexible base materials was obtained.