Sensitivity of Road Unevenness Indicators to Distresses of Composite Pavements

Peter Múčka

《International Journal of Pavement Research and Technology》 8卷2期 (2015/03) Pp. 72-84

https://doi.org/10.6135/ijprt.org.tw/2015.8(2).72

並列摘要

The paper examined the sensitivity of nineteen road unevenness indicators (RUI) to the distresses (reflection cracks, transverse cracks) of the composite pavements. The simulated longitudinal road profiles with superimposed distresses were compared with the pure random part of profiles to estimate the difference in roughness. The influence of distress width, depth, density, and road data pre-processing (moving average base length and sampling interval) was estimated. Analysis of variance was provided to detect the significance of differences in estimated RUIs for distressed and random profiles. The most sensitive indicators to the presence of the reflection cracks were the root mean square (RMS) value in the short wave band, the road elevation spectrum parameters in the whole and short wave bands. A weak sensitivity was observed for the International Roughness Index (IRI), Ride Number (RN), Profilograph Index (PrI) or the road elevation RMS values in the long and medium wave bands.

並列關鍵字

Composite pavement ； Distress ； International Roughness Index ； Longitudinal road profile ； Power spectral density ； Straightedge