Simulation of suction caisson foundations under uplift load considering strain softening and rate effect of clay
It is of great significance to study the uplift bearing characteristics of suction caisson foundations for the safe service performance of offshore tension leg platform (TLP) and multi-leg wind turbine. Based on the secondary development of ABAQUS, a numerical model of suction caisson foundations co...
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| Format: | Article |
| Language: | English |
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Science Press (China Science Publishing & Media Ltd.)
2023-01-01
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| Series: | Shenzhen Daxue xuebao. Ligong ban |
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| Online Access: | https://journal.szu.edu.cn/en/#/digest?ArticleID=2491 |
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| author | DAI Jialin ZHANG Wei LUO Lunbo LI Zhou YU Guangming |
| author_facet | DAI Jialin ZHANG Wei LUO Lunbo LI Zhou YU Guangming |
| author_sort | DAI Jialin |
| collection | DOAJ |
| description | It is of great significance to study the uplift bearing characteristics of suction caisson foundations for the safe service performance of offshore tension leg platform (TLP) and multi-leg wind turbine. Based on the secondary development of ABAQUS, a numerical model of suction caisson foundations considering strain softening and rate effect of soft clay is established. The numerical results are compared with the theoretical and experimental results to verify the reliability of the numerical model. The simulation results show that the change of soft clay strain softening parameters has less than five percent influence on the peak of uplift load, while the rate effect has obvious influence on the peak of uplift load and the difference caused by the change of rate effect parameters is more than forty percent. The peak of uplift load increases linearly withthe caisson outer wall roughness, and the effect of strain softening and rate effect on the uplift load caused by the caisson outer wall roughness can be ignored. For the caisson groups foundation, the caisson group effect becomes obvious with the decrease of caisson spacing, and the bearing capacity can be reduced by up to ten percent. When the caissons spacing is more than one and a half times of the caisson diameter, the caisson groups effect can be ignored. |
| format | Article |
| id | doaj-art-aae9f21a39e94b8b904a7b8f8828ac5a |
| institution | DOAJ |
| issn | 1000-2618 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | Science Press (China Science Publishing & Media Ltd.) |
| record_format | Article |
| series | Shenzhen Daxue xuebao. Ligong ban |
| spelling | doaj-art-aae9f21a39e94b8b904a7b8f8828ac5a2025-08-20T03:02:55ZengScience Press (China Science Publishing & Media Ltd.)Shenzhen Daxue xuebao. Ligong ban1000-26182023-01-01401839110.3724/SP.J.1249.2023.010831000-2618（2023）01-0083-09Simulation of suction caisson foundations under uplift load considering strain softening and rate effect of clayDAI Jialin0ZHANG Wei1LUO Lunbo2LI Zhou3YU Guangming4China Three Gorges Group Co.Ltd., Beijing 100038, P.R.ChinaChina Three Gorges Group Co.Ltd., Beijing 100038, P.R.ChinaChina Three Gorges Group Co.Ltd., Beijing 100038, P.R.ChinaChina Three Gorges Group Co.Ltd., Beijing 100038, P.R.ChinaChina Three Gorges Group Co.Ltd., Beijing 100038, P.R.ChinaIt is of great significance to study the uplift bearing characteristics of suction caisson foundations for the safe service performance of offshore tension leg platform (TLP) and multi-leg wind turbine. Based on the secondary development of ABAQUS, a numerical model of suction caisson foundations considering strain softening and rate effect of soft clay is established. The numerical results are compared with the theoretical and experimental results to verify the reliability of the numerical model. The simulation results show that the change of soft clay strain softening parameters has less than five percent influence on the peak of uplift load, while the rate effect has obvious influence on the peak of uplift load and the difference caused by the change of rate effect parameters is more than forty percent. The peak of uplift load increases linearly withthe caisson outer wall roughness, and the effect of strain softening and rate effect on the uplift load caused by the caisson outer wall roughness can be ignored. For the caisson groups foundation, the caisson group effect becomes obvious with the decrease of caisson spacing, and the bearing capacity can be reduced by up to ten percent. When the caissons spacing is more than one and a half times of the caisson diameter, the caisson groups effect can be ignored.https://journal.szu.edu.cn/en/#/digest?ArticleID=2491geotechnical engineeringsoft claysuction caisson foundationstrain softeningrate effectuplift loadcaisson groups effect |
| spellingShingle | DAI Jialin ZHANG Wei LUO Lunbo LI Zhou YU Guangming Simulation of suction caisson foundations under uplift load considering strain softening and rate effect of clay Shenzhen Daxue xuebao. Ligong ban geotechnical engineering soft clay suction caisson foundation strain softening rate effect uplift load caisson groups effect |
| title | Simulation of suction caisson foundations under uplift load considering strain softening and rate effect of clay |
| title_full | Simulation of suction caisson foundations under uplift load considering strain softening and rate effect of clay |
| title_fullStr | Simulation of suction caisson foundations under uplift load considering strain softening and rate effect of clay |
| title_full_unstemmed | Simulation of suction caisson foundations under uplift load considering strain softening and rate effect of clay |
| title_short | Simulation of suction caisson foundations under uplift load considering strain softening and rate effect of clay |
| title_sort | simulation of suction caisson foundations under uplift load considering strain softening and rate effect of clay |
| topic | geotechnical engineering soft clay suction caisson foundation strain softening rate effect uplift load caisson groups effect |
| url | https://journal.szu.edu.cn/en/#/digest?ArticleID=2491 |
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