Interface modeling for mechanistic analysis of geogrid reinforced flexible pavements

J. Kwon, M. Kim, E. Tutumluer

Research output: Contribution to journalConference articlepeer-review


Recent research at the University of Illinois has focused on the development of a finite element based mechanistic model to provide design tools and solutions for constructing geogrid reinforced flexible pavements. One essential feature of the mechanistic model is the representation of the soil/aggregate-geogrid interface by the use of a simple, realistic interface element having normal and shear spring stiffnesses between the geogrid and soil/aggregate continuum elements. Varying the shear stiffnesses in the interface elements specified the various levels of interface bonding, i.e., perfect bonding and partial bonding. The mechanistic model pavement response predictions including interface shear stresses compared favorably with the ABAQUS contact model results for a set of model parameters. Further, relative displacements computed at the soil/aggregate-geogrid interfaces were small and unlikely to cause any large movement or slip of the geogrid at the interface indicating the use interface elements with spring stiffnesses was adequate.

Original languageEnglish (US)
Pages (from-to)267-281
Number of pages15
JournalGeotechnical Special Publication
Issue number130-142
StatePublished - 2005
EventGeo-Frontiers 2005 - Austin, TX, United States
Duration: Jan 24 2005Jan 26 2005

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology


Dive into the research topics of 'Interface modeling for mechanistic analysis of geogrid reinforced flexible pavements'. Together they form a unique fingerprint.

Cite this