Advertisement

Numerical Investigation of the Interface Shear Behaviors Between Double Soil Layers Using PFC2D

  • Zhong-Liang Zhang
  • Zhen-Dong CuiEmail author
  • Ling-Zi Zhao
Conference paper
Part of the Advances in Science, Technology & Innovation book series (ASTI)

Abstract

The influence of the interface morphology and stiffness ratio of the deformation modulus of upper and lower layers on the stress-shear displacement curves and shear strength parameters were investigated with numerical shear tests in PFC2D. The shear strength of the specimen increases with the increase of the normal stress. The lager the normal stress, the later the peak shear stress would appear. In case of saw teeth at the interface, the peak values of the shear stress appear in the end of the shear tests. The increase of the stiffness ratio can cause the connection fracture in the lower layer particles with smaller stiffness and reduce the thickness of the shear band. The smaller saw teeth size and stiffness ratio, the larger the shear stress.

Keywords

Double soil layers Interface Shear test Saw teeth Stiffness ratio 

Notes

Acknowledgements

This work was funded by the National Key R&D Program of China (2016YFC0600903).

References

  1. 1.
    Hu, L., Pu, J.: Testing and modeling of soil-structure interfaces. J. Geotech. Geoenviron. Eng. 130(8), 851–860 (2004)CrossRefGoogle Scholar
  2. 2.
    Hu, L., Zhang, B., Ma, J.: Mechanical characteristics for interface between granular materials. Mech. Res. Commun. 37(1), 42–46 (2010)CrossRefGoogle Scholar
  3. 3.
    Lashkari, A.: A simple critical state interface model and its application in prediction of shaft resistance of non-displacement piles in sand. Comput. Geotech. 88, 95–110 (2017)CrossRefGoogle Scholar
  4. 4.
    Kock, I., Huhn, K.: Numerical investigation of localization and micromechanics in a stratified soil specimen. Struct. Geol. 29(10), 1679–1694 (2007)CrossRefGoogle Scholar
  5. 5.
    Gu, X.Q., Huang, M.S., et al.: Discrete element modeling of shear band in granular materials. Theoret. Appl. Fract. Mech. 72, 37–49 (2014)CrossRefGoogle Scholar
  6. 6.
    Zhu, H., Zhou, W.H., et al.: Numerical study of the formation of shear bands in soil under interface shearing. Procedia Eng. 175, 102–109 (2017)CrossRefGoogle Scholar
  7. 7.
    Lei, D., Huang, J., et al.: Deformation analysis of shear band in granular materials via a robust plane shear test and numerical simulation. Powder Technol. 323, 285–392 (2018)CrossRefGoogle Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Zhong-Liang Zhang
    • 1
  • Zhen-Dong Cui
    • 1
    Email author
  • Ling-Zi Zhao
    • 1
  1. 1.State Key Laboratory for Geomechanics and Deep Underground Engineering, School of Mechanics and Civil EngineeringChina University of Mining and TechnologyXuzhouChina

Personalised recommendations