沥青路面三维纹理分形维数及其抗滑性能-中南大学学报.PDF

第 47 卷第 10 期 中南大学学报( 自然科学版) Vol.47 No.10 2016 年 10 月 Journal of Central South University (Science and Technology) Oct. 2016 DOI: 10.11817/j.issn.1672-7207.2016.10.041 沥青路面三维纹理分形维数及其抗滑性能 钱振东，薛永超，张令刚 ( 东南大学 智能运输系统研究中心，江苏 南京，210096) 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。 关键词：沥青路面；抗滑性能；三维纹理模型；分形维数 中图分类号： U416.217 文献标志码：A 文章编号：1672−7207(2016)10−3590−07 3-D textural fractal dimension and skid resistance of asphalt pavement QIAN Zhendong, XUE Yongchao, ZHANG Linggang (Intelligent Transportation System Research Center, Southeast University, Nanjing 210096, China) Abstract: 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 ch