| 冰区海上风机支撑结构疲劳评估方法研究 |
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| 引用本文： | 刘浩然,郭建廷,卞向前,张毅,倪航.冰区海上风机支撑结构疲劳评估方法研究[J].海洋工程,2019,37(6):130-139. |
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| 作者姓名： | 刘浩然 郭建廷 卞向前 张毅 倪航 |
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| 作者单位： | 江苏科技大学 船舶与海洋工程学院,江苏 镇江 212000,江苏科技大学 船舶与海洋工程学院,江苏 镇江 212000,江苏科技大学 船舶与海洋工程学院,江苏 镇江 212000,哈尔滨工程大学 船舶工程学院,黑龙江 哈尔滨 150001,江苏科技大学 科技处，江苏 镇江 212000 |
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| 基金项目： | 国家优秀青年基金项目（51622902）；国家自然科学基金面上项目（51579122）；江苏省第五期“333工程”培养资金资助项目（BRA2017444） |
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| 摘 要： | 采用谱分析的方法,对冰区作业的海上风机支撑结构进行疲劳损伤评估。基于风冰散布图,将海上风机所受的风载荷和连续挤压冰载荷作为系统输入,热点应力作为输出,运用随机振动理论与主应力线性化方法,对冰区海上风机支撑结构进行疲劳评估。以某2 MV海上风机支撑结构为计算实例,验证频域疲劳评估方法的准确性。频域方法与时域方法计算结果吻合较好,证明了频域方法的快速有效,可用于快速评估风机支撑结构的疲劳损伤。
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| 关 键 词： | 风载荷 冰载荷 海上风机 支撑结构 疲劳损伤 |
Study on fatigue assessment method for supporting structures of offshore fans in ice areas |
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| LIU Haoran,GUO Jianting,BIAN Xiangqian,ZHANG Yi and NI Hang.Study on fatigue assessment method for supporting structures of offshore fans in ice areas[J].Ocean Engineering,2019,37(6):130-139. |
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| Authors: | LIU Haoran GUO Jianting BIAN Xiangqian ZHANG Yi and NI Hang |
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| Institution: | School of Naval Architecture and Ocean Engineering, Jiangsu University of Science and Technology, Zhenjiang 212000, China,School of Naval Architecture and Ocean Engineering, Jiangsu University of Science and Technology, Zhenjiang 212000, China,School of Naval Architecture and Ocean Engineering, Jiangsu University of Science and Technology, Zhenjiang 212000, China,School of Marine Engineering, Harbin University of Engineering, Harbin 150001, China and Science and Technology Department, Jiangsu University of Science and Technology, Zhenjiang 212000, China |
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| Abstract: | In this study, the fatigue damage assessment of the support structure of offshore wind turbines operating in ice area is carried out by means of spectral analysis. Based on the wind-ice dispersion diagram, the wind load and continuous extrusion ice load on offshore wind turbines are taken as the input of the system, and the hot spot stress as the output. The fatigue assessment of the support structure of offshore wind turbines in the ice area is carried out by using the random vibration theory and the principal stress linearization method. Taking a 2 MV offshore fan support structure as an example, the accuracy of the frequency domain fatigue assessment method is verified. The frequency domain method is in good agreement with the time domain method, which proves that the frequency domain method is fast and effective, and can be used to quickly evaluate the fatigue damage of fan support structures. |
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| Keywords: | wind load ice load offshore wind turbine support structure fatigue damage |
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