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

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Bifurcation and Degradation of Geomaterials in the New Millennium (IWBDG 2014)

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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.

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Acknowledgments

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

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Authors and Affiliations

  1. Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong

    Jiangtao Wei & Gang Wang

Authors
  1. Jiangtao Wei
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  2. Gang Wang
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Corresponding author

Correspondence to Gang Wang .

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Editors and Affiliations

  1. Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong, China

    Kam-Tim Chau

  2. Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Kowloon, Hong Kong, China

    Jidong Zhao

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Wei, J., Wang, G. (2015). Evolution of Packing Structure in Cyclic Mobility and Post-liquefaction of Granular Soils. In: Chau, KT., Zhao, J. (eds) Bifurcation and Degradation of Geomaterials in the New Millennium. IWBDG 2014. Springer Series in Geomechanics and Geoengineering. Springer, Cham. https://doi.org/10.1007/978-3-319-13506-9_38

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  • DOI: https://doi.org/10.1007/978-3-319-13506-9_38

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-13505-2

  • Online ISBN: 978-3-319-13506-9

  • eBook Packages: EngineeringEngineering (R0)

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