Relationship between International Roughness Index and Power Spectral Density of Asphalt Pavements in China

Shao Wen Liu; Xiao Zhang

doi:10.4028/www.scientific.net/AMR.742.104

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 742Relationship between International Roughness Index...

Relationship between International Roughness Index and Power Spectral Density of Asphalt Pavements in China

Abstract:

In this paper, pavement roughness is assumed as random stationary variable and used as the exciting force of theoretical analyses of the quarter car model of International Roughness Index (IRI). From the frequency response function of the quarter car, the response function of the displacement difference between sprung and unsprung mass is obtained based on random process theory. Then the relationship between IRI and power spectral density (PSD) is established from statement characteristic of the response function. Finally, the longitudinal road profiles of typical asphalt roads in China are used to validate the proposed model.

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Periodical:

Advanced Materials Research (Volume 742)

Pages:

104-108

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.742.104

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Online since:

August 2013

Authors:

Shao Wen Liu, Xiao Zhang

Keywords:

International Roughness Index, Power Spectral Density, Random Process Theory, Relationship

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References

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