Analytical and laboratory modelling of shear behaviour of regular rock joints under constant normal stiffness

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This paper describes an improved formulation of an analytical shear strength model developed by Haque & Kodikara (2012) by incorporating the failure of regular concrete/rock joints subjected to CNS condition. Sokolovskii's analytical solutions developed for failure stress of slopes have been found to be effective in this regard. The analytical models have been validated for predicting the shear behaviour of concrete/rock joints subjected to various CNS loading conditions. The model has been found to accurately predict the dilation, normal stress and shear stress behaviour for a regular triangular saw-tooth joint up to the peak shear stress. Moreover, the peak shear stresses of concrete-rock joints with asperity angles ranging from 5 to 27.5° compared reasonably well with the available laboratory test results.

Original languageEnglish
Title of host publicationIRSM 2015: 13th International Congress of Rock Mechanics
EditorsJohn Hadjigeorgiou, Jamie Archibald
Place of PublicationLisbon Portugul
PublisherInternational Society for Rock Mechanics
Number of pages8
Volume2015- MAY
ISBN (Electronic)9781926872254
ISBN (Print)9781926872254
Publication statusPublished - 2015
EventInternational Society of Rock Mechanics Series of Symposia and Conferences 2015 - Montréal Convention Centre, Montréal, Canada
Duration: 10 May 201513 May 2015
Conference number: 13th


ConferenceInternational Society of Rock Mechanics Series of Symposia and Conferences 2015
Abbreviated titleISRM 2015
OtherISRM 13th International Congress on Rock Mechanics


  • Analytical modelling
  • Constant normal stiffness
  • Rock joints
  • Shear strength

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