基于体积指标与分形理论的骨架密实型沥青混合料抗车辙性能预控  

Anti-rutting Performance Pre-control Method of Dense Skeleton Type Asphalt Mixture Based on Volumetric Index and Fractal Theory

作　　者：李丽民[1] 陈云勇[2] 蒋建清[3] LI Limin;CHEN Yunyong;JIANG Jianqing(Hunan University of Science and Engineering,Yongzhou 425199,China;Merchants Chongqing Communications Research and Design Institute Co.,Ltd.,Chongqing 400067,China;Hunan City University,Yiyang 413000,China)

机构地区：[1]湖南科技学院,湖南永州425199 [2]招商局重庆交通科研设计院有限公司,重庆400067 [3]湖南城市学院,湖南益阳413000

出　　处：《材料科学与工程学报》2018年第5期804-809,840,共7页Journal of Materials Science and Engineering

基　　金：湖南省教育厅重点资助项目(16A082);湖南省自然科学基金资助项目(2015JJ2073);国家自然科学基金资助项目(51308198);永州市2016年度指导性科技创新及应用研究资助项目(永科发[2016]27号)

摘　　要：为解决柔性基层沥青路面的车辙问题,通过大量试验,采用灰关联熵方法、人工神经网和遗传算法,得到了体积指标对沥青混合料车辙和疲劳性能的影响数据;基于分形理论,利用空隙率与级配粒径分维数D的强线性相关性,建立起沥青混合料抗车辙性能与级配粒径分维数D之间的联系;进而提出了一种有效的骨架密实型沥青混合料抗车辙性能的预控方法。To solve the rut problem of asphalt pavement, lots of experiments were performed and the influence of volume index on rutting and fatigue properties of asphalt mixture was investigated based on the grey relation entropy method, artificial neural networks and genetic algorithm. Furthermore, the relationship between rut-resistance of asphalt mixture and its gradation fractal dimension D were established by using the good linear relationships between void porous and gradation fractal dimension D based on fractal theory. At last, an effective anti-rutting performance pre-control method of dense skeleton type asphalt mixture is put forward.

关 键 词：骨架密实型沥青混合料 空隙率 车辙 疲劳 分形理论 

分 类 号：U416.217[交通运输工程—道路与铁道工程]