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Modeling consolidation of soft clay by developing a fractional differential constitutive model in conjunction with an intelligent displacement inversion method

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Listed:
  • Zhen Liu
  • Wei Hu
  • Weihua Ming
  • Shenghua Xiong
  • Cuiying Zhou
  • Lihai Zhang

Abstract

Studying the constitutive relation of soft clays is of critical importance for fundamentally understanding their complex consolidation behavior. This study proposes a fractional differential constitutive model in conjunction with an intelligent displacement inversion method based on the classic particle swarm optimization for modeling the deformation behavior of soft clay. The model considered the rheological properties of soft clay at different consolidation stages. In addition, statistical adaptive dynamic particle swarm optimization-least squares support vector machines were implemented to identify the model parameters efficiently. The accuracy and effectiveness of the model were validated using available experimental results. Finally, the application results showed that the proposed model could efficiently simulate coupling properties of soft clay’s primary and secondary consolidations.

Suggested Citation

  • Zhen Liu & Wei Hu & Weihua Ming & Shenghua Xiong & Cuiying Zhou & Lihai Zhang, 2022. "Modeling consolidation of soft clay by developing a fractional differential constitutive model in conjunction with an intelligent displacement inversion method," PLOS ONE, Public Library of Science, vol. 17(9), pages 1-24, September.
    • Handle: RePEc:plo:pone00:0275034
    DOI: 10.1371/journal.pone.0275034
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    References listed on IDEAS

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    1. Deepak Bhat & N. Bhandary & R. Yatabe, 2013. "Residual-state creep behavior of typical clayey soils," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 69(3), pages 2161-2178, December.
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