| 渤海海域单柱三桩式海上风电结构冰激振动分析 |
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| 引用本文： | 黄焱,马玉贤,罗金平,陈法波,田育丰.渤海海域单柱三桩式海上风电结构冰激振动分析[J].海洋工程,2016,34(5):1-10. |
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| 作者姓名： | 黄焱 马玉贤 罗金平 陈法波 田育丰 |
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| 作者单位： | 天津大学 水利工程仿真与安全国家重点实验室，天津 300072;天津大学 水利工程仿真与安全国家重点实验室，天津 300072;中国水电顾问集团 华东勘测设计研究院有限公司，杭州 310014;中国水电顾问集团 华东勘测设计研究院有限公司，杭州 310014;天津大学 水利工程仿真与安全国家重点实验室，天津 300072 |
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| 基金项目： | 国家自然科学基金资助项目（51179123）；国家自然科学基金创新研究群体科学基金资助项目（51321065) |
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| 摘 要： | 针对渤海某区域以单柱三桩式结构为支撑的海上风电系统进行了冰激振动分析。首先模拟风电结构具有显著动力特性差异的主-从式结构特征,根据工程场址海域冰情条件,设置了合理的海冰分析工况,随后依据概化冰力函数确定作用于风电基础结构上的动冰力时程,开展全时域瞬态动力分析。通过对计算结果的详尽分析,选定表征冰与风电结构相互作用进程的综合控制因子Ic,建立基于综合控制因子的冰振事件区划及其出现概率的预判方法。相关方法将为渤海海域风电工程结构冰激振动问题的预判与评估提供参考。
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| 关 键 词： | 海上风电 单柱三桩式结构 冰激振动 综合控制因子 |
Analyses on ice induced vibrations of a tripod piled offshore wind turbine structure in Bohai Sea |
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| HUANG Yan,MA Yuxian,LUO Jinping,CHEN Fabo and TIAN Yufeng.Analyses on ice induced vibrations of a tripod piled offshore wind turbine structure in Bohai Sea[J].Ocean Engineering,2016,34(5):1-10. |
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| Authors: | HUANG Yan MA Yuxian LUO Jinping CHEN Fabo and TIAN Yufeng |
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| Abstract: | The analysis on ice induced vibration for a tripod piled offshore wind turbine structure in Bohai Sea was carried out. Firstly, the nonlinear characteristics of the structure, i.e. having significant differences in the dynamic characteristics of the parallel structures, were accurately simulated. Secondly, reasonable calculation cases were set up according to the site conditions of sea ice. Finally, time histories of ice loads were obtained using dynamic ice load function and transient dynamic analysis was subsequently carried out. Based on thorough analyses of the calculating results, an important factor that represents the interaction process between ice and structure was established and named as the integrated control factor (Ic). Furthermore, the ice induced vibration events were divided into several regions in consistence with Ic. The calculating method for estimating the occurring probabilities for the regions was also given. The methods presented in this paper will provide important references for the judgements and evaluations on the ice induced vibrations of offshore wind turbine structures in Bohai Sea. |
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