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| Anti-impact Performance of Offshore Wind Turbine with Monopile and Tripod Foundations |
| Received:May 18, 2020 Revised:June 10, 2020 |
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| DOI：10.7643/issn.1672-9242.2020.07.002 |
| KeyWord:offshore wind turbine monopile foundation tripod foundation foundation damage unit response |
| Author | Institution |
| HAO Er-tong |
Beijing Wanyuan Industrial Company Limited, Beijing , China |
| WANG Wei |
International Business Department, China Academy of Launch Vehicle Technology, Beijing , China |
| WANG Ming |
Beijing Wanyuan Industrial Company Limited, Beijing , China |
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| Abstract: |
| This study is devoted to evaluate the anti-impact performance of offshore wind turbines (OWTs)’ monopole and tripod foundations subject to ship impacts. Contraposing to the above two foundations, software LS-DYNA was adopted to analyze the maximum collision-force, the damage area, the maximum nacelle acceleration and the steel consumption under different impact conditions to obtain the foundation damage and the OWT response of the two types of foundations. The results showed that the damage of monopole foundation was about 22% lower than that of tripod foundation; the nacelle response of tripod foundation was about 32% lower than that of monopile foundation. It is concluded that there is no risk of tower collapse accident caused by foundation failure and no risk of nacelle falling off for two types of foundations meeting the anti-collision performance requirements of the specification. Meanwhile, the damage of monopile is lighter than that of tripod, the nacelle response of tripod is better than that of monopile. |
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