Wave-induced residual response and liquefaction of a nonhomogeneous layered seabed
Numerical studies were conducted on the wave-induced residual liquefaction of a silt–coarse sand layered seabed. Fully dynamic soil equations and residual seabed response equations were incorporated into the development of a numerical model. The numerical results were compared with theoretical solut...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2024-04-01
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| Series: | Frontiers in Marine Science |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fmars.2024.1360641/full |
| _version_ | 1797228793800163328 |
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| author | Titi Sui Musheng Yang Li Peng Jiandong Chen Chi Zhang Jinhai Zheng |
| author_facet | Titi Sui Musheng Yang Li Peng Jiandong Chen Chi Zhang Jinhai Zheng |
| author_sort | Titi Sui |
| collection | DOAJ |
| description | Numerical studies were conducted on the wave-induced residual liquefaction of a silt–coarse sand layered seabed. Fully dynamic soil equations and residual seabed response equations were incorporated into the development of a numerical model. The numerical results were compared with theoretical solutions and experimental data from previous studies. Relatively good agreement was found in this comparison, validating the reliability of the proposed numerical model. The present model was applied to systematically investigate the wave-induced residual response with a silt–coarse sand layered seabed. The effects of coverage thickness, permeability, Young’s modulus in the upper silt layer on the residual response of the seabed were carefully examined. Numerical simulations indicate that the potential liquefaction is prone to occur with low permeability of the upper silt layer and shallower water depth, and the effect of coverage thickness of the silt layer on pore pressure and liquefaction potential is determined by shear stress ratio (χ) and effective normalized spreading parameter (Se) which represent the “generation power” and “dissipation potential” for residual pore pressure. The performance of the pore pressure and liquefaction in the layered seabed is the result of a trade-off between two non-dimensional parameters. |
| first_indexed | 2024-04-24T15:02:21Z |
| format | Article |
| id | doaj.art-aba5cdeb55a34fca80b966abe3928011 |
| institution | Directory Open Access Journal |
| issn | 2296-7745 |
| language | English |
| last_indexed | 2024-04-24T15:02:21Z |
| publishDate | 2024-04-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Marine Science |
| spelling | doaj.art-aba5cdeb55a34fca80b966abe39280112024-04-02T14:59:25ZengFrontiers Media S.A.Frontiers in Marine Science2296-77452024-04-011110.3389/fmars.2024.13606411360641Wave-induced residual response and liquefaction of a nonhomogeneous layered seabedTiti Sui0Musheng Yang1Li Peng2Jiandong Chen3Chi Zhang4Jinhai Zheng5Key Laboratory of Coastal Disaster and Protection, Hohai University, Ministry of Education, Nanjing, Jiangsu, ChinaKey Laboratory of Coastal Disaster and Protection, Hohai University, Ministry of Education, Nanjing, Jiangsu, ChinaKey Laboratory of Coastal Disaster and Protection, Hohai University, Ministry of Education, Nanjing, Jiangsu, ChinaSurvey and Design, Nanjing Hydraulic Research Institute, Nanjing, Jiangsu, ChinaThe National Key Laboratory of Water Disaster Prevention, Hohai University, Nanjing, Jiangsu, ChinaKey Laboratory of Coastal Disaster and Protection, Hohai University, Ministry of Education, Nanjing, Jiangsu, ChinaNumerical studies were conducted on the wave-induced residual liquefaction of a silt–coarse sand layered seabed. Fully dynamic soil equations and residual seabed response equations were incorporated into the development of a numerical model. The numerical results were compared with theoretical solutions and experimental data from previous studies. Relatively good agreement was found in this comparison, validating the reliability of the proposed numerical model. The present model was applied to systematically investigate the wave-induced residual response with a silt–coarse sand layered seabed. The effects of coverage thickness, permeability, Young’s modulus in the upper silt layer on the residual response of the seabed were carefully examined. Numerical simulations indicate that the potential liquefaction is prone to occur with low permeability of the upper silt layer and shallower water depth, and the effect of coverage thickness of the silt layer on pore pressure and liquefaction potential is determined by shear stress ratio (χ) and effective normalized spreading parameter (Se) which represent the “generation power” and “dissipation potential” for residual pore pressure. The performance of the pore pressure and liquefaction in the layered seabed is the result of a trade-off between two non-dimensional parameters.https://www.frontiersin.org/articles/10.3389/fmars.2024.1360641/fullseabed responselayered seabedpore pressure accumulationliquefactionnumerical simulation |
| spellingShingle | Titi Sui Musheng Yang Li Peng Jiandong Chen Chi Zhang Jinhai Zheng Wave-induced residual response and liquefaction of a nonhomogeneous layered seabed Frontiers in Marine Science seabed response layered seabed pore pressure accumulation liquefaction numerical simulation |
| title | Wave-induced residual response and liquefaction of a nonhomogeneous layered seabed |
| title_full | Wave-induced residual response and liquefaction of a nonhomogeneous layered seabed |
| title_fullStr | Wave-induced residual response and liquefaction of a nonhomogeneous layered seabed |
| title_full_unstemmed | Wave-induced residual response and liquefaction of a nonhomogeneous layered seabed |
| title_short | Wave-induced residual response and liquefaction of a nonhomogeneous layered seabed |
| title_sort | wave induced residual response and liquefaction of a nonhomogeneous layered seabed |
| topic | seabed response layered seabed pore pressure accumulation liquefaction numerical simulation |
| url | https://www.frontiersin.org/articles/10.3389/fmars.2024.1360641/full |
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