Advertisement

Evolution of Packing Structure in Cyclic Mobility and Post-liquefaction of Granular Soils

  • Jiangtao Wei
  • Gang WangEmail author
Conference paper
Part of the Springer Series in Geomechanics and Geoengineering book series (SSGG)

Abstract

Micromechanical change in packing structures can provide significant insights to better understand the cyclic mobility and post-liquefaction behaviors of granular soils. In this study, Discrete Element Method (DEM) is used to investigate the evolution of the packing structure under undrained cyclic loading. The coordination number is used to indicate the formation and destruction of a load-carrying structure in the post-liquefaction stage. A new index, termed as centroid distance, is proposed to quantify the effect of void and particle redistribution during cyclic loading. The new index is found to have a strong correlation with the mobilized maximum cyclic strain in post-liquefaction deformation.

Keywords

Representative Volume Element Discrete Element Method Voronoi Cell Granular Soil Discrete Element Method Simulation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

The study was financially supported by Research Project Competition (UGC/HKUST) grant No. RPC11EG27 and DAG11EG03G.

References

  1. Castro G (1975) Liquefaction and cyclic mobility of saturated sands. J Geotech Eng Div ASCE 101(GT6):551–569Google Scholar
  2. Ng TT, Dobry N (1994) Numerical simulations of monotonic and cyclic loading of granular soil. Int J Geotech Eng 120(2):388–403CrossRefGoogle Scholar
  3. Seed HB, Lee KL (1966) Liquefaction of saturated sands during cyclic loading. J Soil Mech Found Eng ASCE 92:105–134Google Scholar
  4. Sitharam TG, Vinod JS, Ravishankar BV (2009) Post-liquefaction undrained monotonic behavior of sands: experiments and DEM simulations. Géotechnique 59(9):739–749CrossRefGoogle Scholar
  5. Thornton C (2000) Numerical simulations of deviatoric shear deformation of granular media. Géotechnique 50(1):43–53CrossRefGoogle Scholar
  6. Youd TL (1977) Packing changes and liquefaction susceptibility. J Geotech Eng Div ASCE 103(8):918–922Google Scholar

Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  1. 1.Department of Civil and Environmental EngineeringThe Hong Kong University of Science and TechnologyClear Water BayHong Kong

Personalised recommendations