Effects of pavement roughness on rigid pavement stress

C. M. Kuo, C. R. Fu, K. Y. Chen

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


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
Issue number1
Publication statusPublished - 2011 Mar

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering
  • Applied Mathematics


Dive into the research topics of 'Effects of pavement roughness on rigid pavement stress'. Together they form a unique fingerprint.

Cite this