Effect of transient dynamic loading on flexible pavements

Pyeong Jun Yoo, Imad L Al-Qadi

Research output: Chapter in Book/Report/Conference proceedingChapter


The effect of transient dynamic loading on flexible pavements was estimated. Transient dynamic loads within a tire-to-pavement contact area are characterized by continuously increasing or decreasing local dynamic contact stresses, depending on vehicle speed. A transient dynamic load model was successfully incorporated into a three-dimensional finite element model. Dynamic flexible pavement responses to one pass of a heavy vehicular load through a dual-tire assembly were calculated. Results of this study indicate that the flexible pavement response at different pavement temperatures varies depending on whether the analysis was quasi-static or dynamic, where the mass inertia and damping forces by the transient local dynamic loads are considered in the equation of motion. Results also show that the time-dependent history of the calculated pavement responses in the dynamic analysis is more comparable to measurements in the field. The transverse and longitudinal tensile strains at the bottom of the hot-mix asphalt and the compressive stress at the top of the subgrade are underestimated when the mass inertia and damping forces exerted by the transient local dynamic load are ignored.

Original languageEnglish (US)
Title of host publicationPavement Management; Monitoring, Evaluation, and Data Storage; and Accelerated Testing 2007
Number of pages12
StatePublished - Dec 1 2007

Publication series

NameTransportation Research Record
ISSN (Print)0361-1981

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Mechanical Engineering

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