Application of 3D Laser Scanning on Measuring Pavement Roughness

    Volume 34, Issue 2 (March 2006)

    ISSN: 0090-3973

    CODEN: JTEOAD

    Published Online: 1 December 2005

    Page Count: 9


    Chang, J-R
    Assistant Professor, MingHsin University of Science & Technology, Hsin-Fong, Hsin-Chu,

    Chang, K-T
    Assistant Professor, MingHsin University of Science & Technology, Hsin-Fong, Hsin-Chu,

    Chen, D-H
    Special Analysis Engineering Supervisor, Material and Pavements Section, Texas Department of Transportation, Austin, TX

    (Received 7 December 2004; accepted 8 August 2005)

    Abstract

    This study evaluates the use of 3D laser scanning technology to measure pavement roughness. Three 100 m test sections, ranging from smooth to very rough (with apparent cracks, areas of distress, and manholes) were selected to investigate the capability of the 3D laser scanning technology. Rod and level surveys were conducted to establish the reference profile for each test section. In addition, Multiple Laser Profiler (MLP) was employed to measure the multiple paths of each test section. Results from multiple paths of 3D laser scanning were compared with those from MLP and rod and level surveys. The 100 m reference profiles indicate similar results between the 3D laser scanning and rod and level survey. With 95% confidence, the statistical paired-samples T-test indicates that there is no significant variation between the results from rod and level surveys and 3D laser scanning. The data include IRI from 2.83 to 13.15 m/km such that they represent a wide spectrum of pavement conditions. The coefficient of correlation (R2) between the MLP and 3D laser scanning from 20 longitudinal profiles is 0.99. The 3D laser scanning is a static method and thus the data do not have to be filtered and therefore there is no associated cut-off wavelength problem. Based on the results gathered, the 3D laser scanner is able to collect reliable profile data and has high potential to be used as a QC/QA tool for construction acceptance. Through 3D laser scanning technology, pavement engineers are able to visualize the pavement roughness covering the entire pavement width in unprecedented detail that consists of extremely rich and accurate point-cloud data.


    Paper ID: JTE13178

    DOI: 10.1520/JTE13178

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    Author
    Title Application of 3D Laser Scanning on Measuring Pavement Roughness
    Symposium , 0000-00-00
    Committee D04