摘要
为深入了解沥青路面表面宏观构造与抗滑性能间的关系,选取了不同等级、不同路面类型的11条公路共33个测试点,利用采样间距为1.067 1 mm的激光断面仪和动态摩擦系数测试仪(DFT)开展了路面表面宏观构造和抗滑性能的现场测试.计算了路面断面统计特征、分形特征、几何特征指标以及平均断面深度等宏观构造指标,依据相关性分析,选择平均断面深度、偏斜度、驼峰度、分形维数、平均斜率和平均曲率等6个指标对路面表面宏观构造进行描述,在此基础上开展的路面表面宏观构造与抗滑性能关系的多元统计分析表明,二者之间存在显著的二次多项式关系,采用上述6个宏观构造指标能精确地描述与抗滑性能的关系.
To deeply understand the relationship between surface macrotexture skid resistance of asphalt pavement,field tests are conducted using laser profile tester with 1.067 1 mm sample interval and dynamic friction tester in 33 test sites of 11 sections of various highway grades and pavement types.Statistical character,fractal character and geometric character indicators of pavement surface profile and Mean Profile Depth are calculated.Mean Profile Depth,Skewness,Kurtosis,Fractal Dimension,Average Slope and Average Curvature are finally selected to describe asphalt pavement macrotexture through correlation analysis.Multiple regression analysis shows a significant quadratic polynomial relation between macrotexture and skid resistance.Relationship of surface macrotexture and skid resistance of asphalt pavement can be precisely characterized using above mentioned 6 macrotexture indicators.
出处
《北京工业大学学报》
EI
CAS
CSCD
北大核心
2011年第4期547-553,共7页
Journal of Beijing University of Technology
基金
国家自然科学基金资助项目(50908004)
道路结构与材料交通行业重点实验室(北京)开放课题(2008)
关键词
公路工程
沥青路面
宏观构造
抗滑性能
多元回归分析
highway engineering
asphalt pavement
macrotexture
skid resistance
multiple regression analysis
