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Development of a shear damage constitutive model and dynamic slip numerical program for soil‒rock interfaces based on shear tests.

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Title: Development of a shear damage constitutive model and dynamic slip numerical program for soil‒rock interfaces based on shear tests.
Authors: Wang, Linfeng1,2 (AUTHOR), Zhou, Xiaohan2 (AUTHOR), Liu, Xinrong2 (AUTHOR) liuxrong@126.com, Suliman, Lojain2 (AUTHOR), Zhou, Zihan2 (AUTHOR), Xiong, Fei3 (AUTHOR), Liu, Xin1 (AUTHOR)
Source: Canadian Geotechnical Journal. 3/18/2026, Vol. 63, p1-30. 30p.
Subject Terms: *Damage models, *Shear (Mechanics), *Slope stability, *Mechanical behavior of materials, *Shear strength, *Measurement of shear strength, *Geotechnical engineering
Abstract (English): Current analyses of excavation stability in soil and rock strata do not account for strength degradation due to interfacial sliding offset, resulting in errors. In this work, the morphological characteristics of the soil‒rock interface are statistically characterized, the shear mechanical properties and damage characteristics of the interface are elucidated through shear tests, a shear damage constitutive model is constructed, and an interface dynamic slip numerical program is developed. The main conclusions are as follows: (1) With increasing normal pressure, water content, and interface relief, the peak shear stress τp at the non-cohesive soil‒rock interface shows linearly increasing, first increasing then decreasing, and bilinear increasing trends, respectively. In contrast, τp at the cohesive soil‒rock interface shows linearly increasing, linearly decreasing, and bilinear increasing trends, respectively. (2) There are three failure modes in both sandy soil and cohesive soil at the interface with the rock strata, with the cohesive soil also accompanied by diagonal compression shear cracks. (3) The descriptive effect of the constitutive model is satisfactory for all test groups. (4) Considering the dynamic mechanical behavior of the soil‒rock interface, the interface breaks off and slides with formation deformation, which is consistent with the actual situation. [ABSTRACT FROM AUTHOR]
Abstract (French): Les analyses actuelles de la stabilité des excavations dans les strates de sol et de roche ne tiennent pas compte de la dégradation de la résistance due au décalage du glissement interfacial, ce qui entraîne des erreurs. Dans ce travail, les caractéristiques morphologiques de l'interface sol-roche sont caractérisées statistiquement, les propriétés mécaniques de cisaillement et les caractéristiques d'endommagement de l'interface sont clarifiées par des essais de cisaillement, un modèle constitutif d'endommagement par cisaillement est construit, et un programme numérique de glissement dynamique de l'interface est développé. Les principales conclusions sont les suivantes : (1) Avec l'augmentation de la pression normale, de la teneur en eau et du relief de l'interface, la contrainte de cisaillement maximale τp à l'interface sol-roche non cohésive présente respectivement des tendances d'augmentation linéaire, d'augmentation puis de diminution, et d'augmentation bilinéaire. En revanche, τp à l'interface sol-roche cohésive présente respectivement des tendances d'augmentation linéaire, de diminution linéaire et d'augmentation bilinéaire. (2) Il existe trois modes de défaillance à l'interface entre le sol sableux et le sol cohésif avec les strates de roche, les sols cohésifs étant également accompagnés de fissures de cisaillement en compression diagonale. (3) L'effet descriptif du modèle constitutif est satisfaisant pour tous les groupes d'essai. (4) En tenant compte du comportement mécanique dynamique de l'interface sol-roche, l'interface se déforme et glisse avec la formation, ce qui est conforme à la situation réelle. [ABSTRACT FROM AUTHOR]
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  Label: Title
  Group: Ti
  Data: Development of a shear damage constitutive model and dynamic slip numerical program for soil‒rock interfaces based on shear tests.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Wang%2C+Linfeng%22">Wang, Linfeng</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhou%2C+Xiaohan%22">Zhou, Xiaohan</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Xinrong%22">Liu, Xinrong</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> liuxrong@126.com</i><br /><searchLink fieldCode="AR" term="%22Suliman%2C+Lojain%22">Suliman, Lojain</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhou%2C+Zihan%22">Zhou, Zihan</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xiong%2C+Fei%22">Xiong, Fei</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Xin%22">Liu, Xin</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Canadian+Geotechnical+Journal%22">Canadian Geotechnical Journal</searchLink>. 3/18/2026, Vol. 63, p1-30. 30p.
– Name: Subject
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  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Damage+models%22">Damage models</searchLink><br />*<searchLink fieldCode="DE" term="%22Shear+%28Mechanics%29%22">Shear (Mechanics)</searchLink><br />*<searchLink fieldCode="DE" term="%22Slope+stability%22">Slope stability</searchLink><br />*<searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink><br />*<searchLink fieldCode="DE" term="%22Shear+strength%22">Shear strength</searchLink><br />*<searchLink fieldCode="DE" term="%22Measurement+of+shear+strength%22">Measurement of shear strength</searchLink><br />*<searchLink fieldCode="DE" term="%22Geotechnical+engineering%22">Geotechnical engineering</searchLink>
– Name: Abstract
  Label: Abstract (English)
  Group: Ab
  Data: Current analyses of excavation stability in soil and rock strata do not account for strength degradation due to interfacial sliding offset, resulting in errors. In this work, the morphological characteristics of the soil‒rock interface are statistically characterized, the shear mechanical properties and damage characteristics of the interface are elucidated through shear tests, a shear damage constitutive model is constructed, and an interface dynamic slip numerical program is developed. The main conclusions are as follows: (1) With increasing normal pressure, water content, and interface relief, the peak shear stress τp at the non-cohesive soil‒rock interface shows linearly increasing, first increasing then decreasing, and bilinear increasing trends, respectively. In contrast, τp at the cohesive soil‒rock interface shows linearly increasing, linearly decreasing, and bilinear increasing trends, respectively. (2) There are three failure modes in both sandy soil and cohesive soil at the interface with the rock strata, with the cohesive soil also accompanied by diagonal compression shear cracks. (3) The descriptive effect of the constitutive model is satisfactory for all test groups. (4) Considering the dynamic mechanical behavior of the soil‒rock interface, the interface breaks off and slides with formation deformation, which is consistent with the actual situation. [ABSTRACT FROM AUTHOR]
– Name: Abstract
  Label: Abstract (French)
  Group: Ab
  Data: Les analyses actuelles de la stabilité des excavations dans les strates de sol et de roche ne tiennent pas compte de la dégradation de la résistance due au décalage du glissement interfacial, ce qui entraîne des erreurs. Dans ce travail, les caractéristiques morphologiques de l'interface sol-roche sont caractérisées statistiquement, les propriétés mécaniques de cisaillement et les caractéristiques d'endommagement de l'interface sont clarifiées par des essais de cisaillement, un modèle constitutif d'endommagement par cisaillement est construit, et un programme numérique de glissement dynamique de l'interface est développé. Les principales conclusions sont les suivantes : (1) Avec l'augmentation de la pression normale, de la teneur en eau et du relief de l'interface, la contrainte de cisaillement maximale τp à l'interface sol-roche non cohésive présente respectivement des tendances d'augmentation linéaire, d'augmentation puis de diminution, et d'augmentation bilinéaire. En revanche, τp à l'interface sol-roche cohésive présente respectivement des tendances d'augmentation linéaire, de diminution linéaire et d'augmentation bilinéaire. (2) Il existe trois modes de défaillance à l'interface entre le sol sableux et le sol cohésif avec les strates de roche, les sols cohésifs étant également accompagnés de fissures de cisaillement en compression diagonale. (3) L'effet descriptif du modèle constitutif est satisfaisant pour tous les groupes d'essai. (4) En tenant compte du comportement mécanique dynamique de l'interface sol-roche, l'interface se déforme et glisse avec la formation, ce qui est conforme à la situation réelle. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1139/cgj-2025-0439
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 30
        StartPage: 1
    Subjects:
      – SubjectFull: Damage models
        Type: general
      – SubjectFull: Shear (Mechanics)
        Type: general
      – SubjectFull: Slope stability
        Type: general
      – SubjectFull: Mechanical behavior of materials
        Type: general
      – SubjectFull: Shear strength
        Type: general
      – SubjectFull: Measurement of shear strength
        Type: general
      – SubjectFull: Geotechnical engineering
        Type: general
    Titles:
      – TitleFull: Development of a shear damage constitutive model and dynamic slip numerical program for soil‒rock interfaces based on shear tests.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Wang, Linfeng
      – PersonEntity:
          Name:
            NameFull: Zhou, Xiaohan
      – PersonEntity:
          Name:
            NameFull: Liu, Xinrong
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            NameFull: Suliman, Lojain
      – PersonEntity:
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            NameFull: Zhou, Zihan
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            NameFull: Xiong, Fei
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            NameFull: Liu, Xin
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          Dates:
            – D: 18
              M: 03
              Text: 3/18/2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 00083674
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            – Type: volume
              Value: 63
          Titles:
            – TitleFull: Canadian Geotechnical Journal
              Type: main
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