Abstract
Seabed liquefaction is the phenomenon by which the seabed soil loses its strength and stiffness, due to applied stress, and behaves like a non-Newtonian fluid. Seabed liquefaction can lead to severe failure of marine structures, such as buried pipelines or coastal breakwaters. Numerical modelling of liquefaction can provide valuable insights into the prevailing wave-structuresoil interaction. However, the holistic modelling of seabed liquefaction, including the transition from solid to liquid and back to solid soil, is challenging, due to the prevailing hydrogeotechnical processes. As a step towards the development of such a holistic numerical model of seabed liquefaction, this paper considers the modelling of the soil under a rocking plate as an idealised representation of a caisson breakwater as presented in [1]. The numerical model has recently been presented in [2] and includes equations for the accumulation of pore pressure and a criterion to distinguish between the liquefied and non-liquefied regions. The numerical results are compared to the experimen-tal results taken from [1]. Different numerical model setups are presented to overcome modelling challenges due to occurring punching shear failure.
| Original language | English |
|---|---|
| Title of host publication | Offshore Geotechnics |
| Publisher | American Society of Mechanical Engineers (ASME) |
| ISBN (Electronic) | 9780791885949 |
| DOIs | |
| Publication status | Published - 2022 |
| Event | ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2022 - Hamburg, Germany Duration: 5 Jun 2022 → 10 Jun 2022 |
Publication series
| Name | Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE |
|---|---|
| Volume | 9 |
Conference
| Conference | ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2022 |
|---|---|
| Country/Territory | Germany |
| City | Hamburg |
| Period | 5/06/22 → 10/06/22 |
Bibliographical note
Publisher Copyright:© 2022 by ASME.
Funding
This work was supported by the three-year (2020-2023) research program NuLIMAS (Numerical Modelling of Wave-Induced Liquefaction Around Marine Structures) project within the ERA-NET Co-fund MarTERA Program under EU Horizon 2020 Framework (http://nulimas.info, Grant No. 728053), the German Federal Ministry for Economic Affairs and Energy (Grant No.03SX524A), the Scientific and Technological Research Council of Turkey (Grant No. TEYDEB-1509/9190068), and the Polish National Centre for Research and Development. V.S.O. Kirca and B.M. Sumer acknowledge Istanbul Technical University (ITU) ARI TEKNOKENT for their ongoing support under the ITU ARI TEKNOKENT R & D activities.