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| Research on integrated dimension-reduction modeling of stochastic wind-wave and reliability of offshore wind turbines |
| Received:May 14, 2022 Revised:September 15, 2022 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20220514001 |
| KeyWord:fluctuating wind field wave field integrated modeling dimension-reduction method offshore turbine reliability analysis |
| Author | Institution |
| 吕康玄 |
中交第二航务工程勘察设计院有限公司, 武汉 |
| 张文远 |
武汉工程大学 土木工程与建筑学院, 武汉 |
| 贺炳楠 |
武汉工程大学 土木工程与建筑学院, 武汉 |
| 刘子心 |
防灾科技学院 中国地震局建筑物破坏机理与防御重点实验室, 三河 |
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| Abstract: |
| Based on the spectral representation dimension-reduction method of stochastic fluctuating wind field and wave force field,the fluctuating wind speed Davenport spectrum and wave P-M spectrum are used to construct the wind and wave spectral parameters,and the same elementary random variables are applied to ensure the consistency of probability information of wind and wave,so as to realize the integrated dimension-reduction modeling of stochastic wind-wave field.Furthermore,based on finite element software ANSYS,the numerical model of an offshore wind turbine tower is established,and the dynamic reliability of the structure under three working conditions is analyzed with the top displacement as the index.Numerical examples verify the effectiveness of the proposed integrated dimension-reduction modeling method for stochastic wind-wave field.The structural dynamic analysis shows that the influence of wind load on the top displacement response of the wind turbine tower is dominant,and the effect of wave load cannot be ignored.In addition,the probability information of representative samples generated by the integrated dimension-reduction method is complete,which can be combined with the probability density evolution theory to realize the refined dynamic response and reliability analysis of offshore structures subjected to the combined action of wind and wave. |
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