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Poro-Elasto-Plastic Model for Wave-Induced Liquefaction

[+] Author Affiliations
Chengcong Liao

Shanghai Jiao Tong University, Shanghai, China

Hongyi Zhao, Dong-Sheng Jeng

Griffith University Gold Coast Campus, QLD, Australia

Paper No. OMAE2014-24480, pp. V003T10A029; 8 pages
doi:10.1115/OMAE2014-24480
From:
  • ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 3: Offshore Geotechnics
  • San Francisco, California, USA, June 8–13, 2014
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-4541-1
  • Copyright © 2014 by ASME

abstract

In this study, a two-dimensional poro-elasto-plastic model for the wave-induced liquefaction in a porous seabed was presented. Two mechanisms of the wave-induced pore pressures were considered. Both elastic components (for oscillatory) and the plastic components (for residual) were integrated to predict the wave-induced excess pore pressures in marine sediments. The proposed 2D poro-elasto-plastic model allows for the pore pressure build-up process in a sandy seabed. The proposed model overall agreed well with the previous wave experiments and centrifuge tests. Numerical example shows that the pattern of progressive waves -induced liquefaction gradually changed from 2D to 1D.

Copyright © 2014 by ASME
Topics: Liquefaction , Waves

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