Effects of pavement roughness on rigid pavement stress

Chen-Ming Kuo, C. R. Fu, K. Y. Chen

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Pavement roughness causes pavement stress fluctuation along the road. However, the dynamic effects were not taken into account in most pavement design and studies. To investigate the influences of roadway roughness on pavement stresses, this study developed a coupled system consisting of a quarter-car model and an equivalent lump pavement model. The coupled system also incorporated measured road profiles. By means of transfer function in frequency domain, the deflections and stresses of pavements were computed in seconds. The results were validated with Westergaard's solutions satisfactorily. It was found that the critical roughness, which might cause extreme responses, is related to the vehicle speed and suspension of vehicles. The maximum tension at the bottom of pavements also depends on the size of bump. In addition, the study demonstrates the correlation between roughness index, IRI, and ISO roughness classifications. It was also found that disturbance due to model boundary affects simulation results significantly.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalJournal of Mechanics
Volume27
Issue number1
DOIs
Publication statusPublished - 2011 Mar 1

Fingerprint

pavements
Pavements
Roughness
roughness
Surface roughness
Coupled System
roads
vehicles
Deflection
Transfer Function
Frequency Domain
causes
Extremes
Disturbance
Model
Fluctuations
transfer functions
Transfer functions
deflection
Railroad cars

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering
  • Applied Mathematics

Cite this

Kuo, Chen-Ming ; Fu, C. R. ; Chen, K. Y. / Effects of pavement roughness on rigid pavement stress. In: Journal of Mechanics. 2011 ; Vol. 27, No. 1. pp. 1-8.
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Effects of pavement roughness on rigid pavement stress. / Kuo, Chen-Ming; Fu, C. R.; Chen, K. Y.

In: Journal of Mechanics, Vol. 27, No. 1, 01.03.2011, p. 1-8.

Research output: Contribution to journalArticle

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