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WU Qing-xiong, CHEN Bao-chun, XI Ling-zhi. Comparison of PSD method and IRI method for road roughness evaluation[J]. Journal of Traffic and Transportation Engineering, 2008, 8(1): 36-41.
Citation: WU Qing-xiong, CHEN Bao-chun, XI Ling-zhi. Comparison of PSD method and IRI method for road roughness evaluation[J]. Journal of Traffic and Transportation Engineering, 2008, 8(1): 36-41.
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Comparison of PSD method and IRI method for road roughness evaluation

  • School of Civil Engineering, Fuzhou University, Fuzhou 350002, Fujian, China

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  • Author Bio:

    Wu Qing-xiong (1973-), male, PhD, associate researcher, +86-591-87892620, wuqingx@fzu.edu.an

  • Received Date: 2007-07-28
  • Publish Date: 2008-02-25
    Abstract
  • In order to analyze the relationship between power spectral density (PSD) method and international roughness index (IRI) method in evaluating road roughness, AR model was adopted to simulate road roughness condition for satisfying PSD, and Newmark β method was employed to calculate IRI values, the relationship formula between PSD method and IRI method was determined by using least square method. Analysis result shows that the relationship between IRI value and road roughness coefficient meets power function, and to correspond to IRI values in quality inspection and evaluation standards for highway engineering (JTG F80/1-2004), a "very good" item of road roughness evaluation should be complemented into technical specifications of maintenance for highway (JTJ 073-96).

     

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