基于高精度激光断面高程的沥青路面MTD测量  

MTD measurement of asphalt pavement based on high precision laser section elevation

作　　者：丁世海[1,2] 战友 阳恩慧[1,2] 王郴平[1,3] Ding Shihai;Zhan You;Yang Enhui;Wang Chenping(School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,China;Highway Engineering Key Laboratory of Sichuan Province,Southwest Jiaotong University,Chengdu 610031,China;School of Civil and Environmental Engineering,Oklahoma State University,Stillwater 74078,USA)

机构地区：[1]西南交通大学土木工程学院,成都610031 [2]西南交通大学道路工程四川省重点实验室,成都610031 [3]School of Civil and Environmental Engineering,Oklahoma State University,Stillwater 74078,USA

出　　处：《东南大学学报（自然科学版）》2020年第1期137-142,共6页Journal of Southeast University：Natural Science Edition

基　　金：国家自然科学基金资助项目(U1534203,51478398)

摘　　要：为实现沥青路面构造深度非接触式自动测量,借助三维激光技术提出了一种基于断面高程的沥青路面构造深度测量方法.采用高精度三维激光扫描仪,采集不同级配沥青路面纹理高程数据,通过数字图像处理技术和平均曲率流光顺算法,提取并处理路面断面高程轮廓.结合蒙特卡洛期望法估算断面构造深度,实现平均构造深度测量,利用铺砂法进行对比验证,并与摆式摩擦仪测量结果进行相关性分析.试验结果表明,针对不同级配沥青路面,采用所提方法与铺砂法测量的MTD值的相对误差均小于等于6.63%,与抗滑值的相关系数高达0.97.To realize the non-contact automatic measurement of the depth of the asphalt pavement structure, the depth measurement method of asphalt pavement based on the section elevation was proposed by three-dimensional(3 D)laser technology. The high-precision 3 D laser scanner was used to collect the elevation data of different graded asphalt pavement textures. The digital image processing technology and the average curvature flow smoothing algorithm were used to extract and process the elevation profile of the pavement section. The Monte Carlo prediction method was used to estimate the depth of the section structure and realize the average structural depth measurement. The sand paving method was used for comparative verification and the correlation analysis with the measurement results of pendulum friction instrument. The experimental results show that as for different grades of asphalt pavement, the relative errors of the mean texture depth(MTD)measured by the proposed method and the sanding method are no higher than 6.63%, and the correlation coefficient with the anti-slip value is as high as 0.97.

关 键 词：沥青路面 数字图像处理 平均曲率流光顺算法 三维激光技术 蒙特卡洛期望法 

分 类 号：U416.2[交通运输工程—道路与铁道工程]