摘要
针对北方海域风力发电体系在冬季情况下运行可能受到的冰力和风的联合作用,分别进行冰力作用、风力作用以及冰力-风耦合作用下的海上风力发电体系的动力响应的对比分析研究。其中,采用Kaimal谱进行脉动风速时程模拟,采用随机冰力模型进行冰力时程模拟,在此基础上,得到风力塔架顶部的位移和塔架基础反力在风力、冰和风-冰耦合作用下的动力响应。结果表明,风对顶部位移的作用大于冰,而在考虑对基础的反力时,二者相当,冰的作用不可忽略。
The characteristics of dynamic response are critical to the feasibility and safety of wind turbine tower in northern ocean region under the condition of coupling excitation of wind and ice. The dynamic response analysis of the Wind Turbine Tower was performed based on the fluctuating wind velocity time series and the stochastic ice load time series. The results showed that wind load play more role in the top displacement response of the tower than ice loading excitation, whereas on the reaction force response of foundation, the effects of ice loading is increasing and could not be ignored.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2013年第7期1234-1240,共7页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(51179026)
教育部新世纪优秀人才资助计划
关键词
海洋工程
风力发电
冰
风荷载
动力响应
ocean engineering
wind power generation
ice load
wind load
dynamic response
