Journal of South China University of Technology (Natural Science Edition) ›› 2018, Vol. 46 ›› Issue (11): 142-149,156.doi: 10.3969/j.issn.1000-565X.2018.11.019

• Traffic & Transportation Engineering • Previous Articles     Next Articles

Effect of 3D Laser Data Scanning Density on Pavement Macrotexture Depth Measurement

HUI Bing1,2,3 GUO Mu1 LIU Xiaofang1   

  1. 1． School of Highway，Chang’an University，Xi’an 710064，Shaanxi，China; 2． Key Laboratory of Highway Engineering in Special Areas of the Ministry of Education，Xi’an 710075，Shaanxi，China; 3． China Communications Tongli Construction Co． ，Ltd． ，Xi’an 710075，Shaanxi，China
  • Received:2018-02-01 Revised:2018-06-16 Online:2018-11-25 Published:2018-10-02
  • Contact: Bing Hui,惠冰( 1982) ，男，博士，副教授，主要从事路面检测与养护管理研究 E-mail:82628532@qq.com
  • About author:惠冰( 1982) ，男，博士，副教授，主要从事路面检测与养护管理研究
  • Supported by:
    The National Natural Science Foundation of China( 51508034)The Natural Science Foundation of Shaanxi Province( 2017JM5130) 

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Abstract: In order to study the effect of 3D laser data scanning density on the measurement results when the 3D laser technology is applied to acquire the asphalt pavement mean texture depth (MTD). Using 3D laser Laboratory Testing System, to capture the surface data of asphalt pavement specimens involved AC10、AC13、AC16, considering 16 combinations types of scanning density to calculate the results of MTD on several laser scanning density, and the influence of 3D laser data scanning density on the result of MTD was analyzed. The results show that:3D laser scanning technology has a good reliability on MTD calculation of asphalt pavement; when the laser data scanning density drop from 0.5mm×0.5mm to 5mm×5mm, the MTD averages among three types asphalt pavement specimens declined the most with a 36.52% drop, and the variation coefficient increases to 0.543mm. In addition, only change the direction interval of laser data scanning density is not significant to the results of MTD calculation. There is a significant logarithmic correlation between the MTD of the three types of asphalt pavement and the drop ratio of the laser data density, and the correlation coefficient is above 0.95. The pavement with larger particle size is more affected by the change of laser data scanning density.

Key words: road pavement engineering, anti-skid performance, texture depth, 3D laser scanning technology, laser data scanning density

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