摘要
海上风电支撑结构不同于一般海洋结构物,它受到复杂的风机气动荷载、机械控制荷载和海洋环境荷载的多重作用。文章针对海上某单立柱风电支撑结构,通过分析其结构固有频率的约束限制以及外环境荷载的动力特性,综合考虑外环境荷载尤其是风机荷载的动力放大影响,给出海上单立柱风电支撑结构的拟静力分析思路。并进行极端及操作工况下支撑结构在风、浪、流环境荷载组合作用的应力计算和强度分析。提出该种结构在使用现有海洋结构物设计规范和风机设计规范时的注意事项。该分析比较结果及结论可作为海上类似风电支撑结构的设计参考。
Compared with general offshore structures, supporting structures of offshore wind turbines （OWTs） are subjected to complicated loads, which includes not only aerodynamic and mechanical loads from OWT but also various marine environmental loads. A quasi-static design method on a monopile supported OWT structure is presented based on the natural frequency confining influence and the dynamic amplification characteristics of environmental loadings in the paper. Stress calculation and strength analy- sis are executed focusing on the supposed extreme condition and operation condition in site. Wind loading, wave loading and current loading are taken into consideration here. Comparative studies have been per- formed on the results. Some useful conclusions are drawn for the future design of this type of structures when one seeks to combine existing design standards for supporting structures of OWT and general offshore structures.
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第2期89-94,110,共7页
Periodical of Ocean University of China
基金
国家高技术研究发展计划项目(2006AA09Z331)
国家自然科学基金重点项目(50739004)资助
关键词
海上风力发电
叶片通过频率
结构固有频率
极端工况
操作工况
offshore wind turbine（OWT）
passing frequency of blades
natural frequency of strueture
extreme condition
operation condition
