三维激光断面仪调查系统工作原理及其应用  

Three-dimensional laser profilometer survey system of pavement slip characteristics

作　　者：徐粒 呙润华[2] 彭慧婷 施鹏程 XU Li;GUO Runhua;PENG Huiting;SHI Pengcheng(College of Construction Engineering,Xinjiang University,Urumqi 830047,China;Department of Civil Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[1]新疆大学建筑工程学院,乌鲁木齐830047 [2]清华大学土木工程系,北京100084

出　　处：《清华大学学报（自然科学版）》2021年第10期1202-1211,共10页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金-地区基金项目(51568063)。

摘　　要：该文介绍了高速车载三维激光断面仪横向布置架构、工作原理及其在路面三维纹理中的调查应用。通过该设备提取了8种沥青路面纹理的平均高度(Ra)、平均断面深度(mean profile depth,MPD)、平均构造深度(mean texture depth,MTD)、均方根高度(root mean square height,Rq)、峰体积(peak volume,Vmp)、波长(λ)、二维功率谱密度(power spectral density, PSD)信息。结果表明:Ra、 MPD与摆值(British pendulum number,BPN)抗滑关联性高达80%以上;PSD可以独立于样本对抗滑性能进行评估,PSD随波矢q增大而减小;AC13、 AC16系列新成型道面的微观和宏观纹理波长主要集中在0~3 mm, 1 mm以下纹理波段与抗滑正相关性高达80%以上,1~1.25 mm波段对抗滑性能作用减弱,1.25~2.5 mm波段将衰减抗滑性能。车辙会导致道面三维纹理粗糙度损失,具体表现在其表面PSD明显低于常规道面。A 3 D laser profilometer was used to measure the average height(Ra), average section depth(MPD), average structure depth(MTD), root mean square height(Rq), peak volume(Vmp), wavelength(λ), and two-dimensional power spectral density(PSD) of eight asphalt pavements. The results show that the anti-slip characteristics correlate with Ra, MPD, and MTD with over 80% correlation. PSD decreases with increasing wave vector q, which can also be used to independently evaluate the anti-skid characteristics of the pavement. The micro-and macro-texture wavelengths of the AC13 and AC16 series samples mainly range from 0-3 mm, with the texture band below 1 mm correlating positively with the anti-slip characteristics with up to 80% correlation, with less correlation in the 1-1.25 mm band, and even less in the 1.25-2.5 mm band. Rutting reduces the roughness as seen in the lower PSD than for the original pavement.

关 键 词：沥青路面 激光断面仪 抗滑性能 三维纹理 二维功率谱密度 

分 类 号：U416.217[交通运输工程—道路与铁道工程]