沥青路面三维纹理分形维数及其抗滑性能  

3-D textural fractal dimension and skid resistance of asphalt pavement

作　　者：钱振东[1] 薛永超[1] 张令刚[1] QIAN Zhendong XUE Yongchao ZHANG Linggang(Intelligent Transportation System Research Center, Southeast University, Nanjing 210096, China)

机构地区：[1]东南大学智能运输系统研究中心,江苏南京210096

出　　处：《中南大学学报（自然科学版）》2016年第10期3590-3596,共7页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(51178114)~~

摘　　要：研究沥青路面抗滑性能与三维纹理分形维数的关系。成型4种SMA沥青混凝土车辙板,采用数字图像处理技术重构车辙板表面三维纹理模型,实测车辙板表面构造深度检验重构的三维纹理模型的有效性,通过差分盒维数法计算三维纹理模型的分形维数,研究分形维数与抗滑性能的关系。研究结果表明:重构的三维纹理模型在纹理构造特征上以较高精度恢复原沥青路面的表面形貌,计算的分形维数与实测的摆值、构造深度具有良好的相关性,可以较好地表征沥青路面的抗滑性能;构造深度随着分形维数的增加而减小,摆值随着分形维数的增加先减小后增加。The relationship between skid resistance and three-dimensional（3-D） textural fractal dimension of asphalt pavement was studied. At first, four kinds of SMA rut plate specimens were formed and the 3-D textural models of rut plate specimens were reconstructed based on digital image processing technology. According to the measured texture depth, the effectiveness of models was then examined. In the end, the fractal dimension was calculated by differential box-counting method and its relationship with skid resistance was studied. The results show that the reconstructed 3-D textural model accurately restores the surface topography of original asphalt pavement on the textural structure characteristics. The calculated fractal dimension has a good correlation with measured British pendulum number and texture depth, and can well represents the skid resistance of asphalt pavement. The texture depth decreases all the time with the increase of the fractal dimension, but the British pendulum number decreases to the minimum value and then increases.

关 键 词：沥青路面 抗滑性能 三维纹理模型 分形维数 

分 类 号：U416.217[交通运输工程—道路与铁道工程]