摘要
基于大功率的海上风力机(OWTs)的动力特性约束,优化确定不同水深范围内柔性、刚柔性及刚性设计方案下3种典型固定式海上风电支撑--单立柱、单立柱三桩和导管架式结构主尺度;进一步分析动力特性可行结构方案相应外环境激励及抗力特征不确定分布下结构强度、刚度性能的可靠度指标。研究结果表明:大功率风力机固定式支撑结构水深拓展到100 m,导管架支撑刚柔性设计为经济可行方案,相应方案的单立柱及单立柱三桩存在过大位移及应力。该方法可用于海上风电支撑结构选型和方案决策。
The paper presents an evaluation method to assess different design schemes of support structures for large-capacity OWT.Monopile supports,tripod supports as well as lattice supports at different water depths up to100m are used as models of optimization based on dynamic excitation of OWT.The reliability properties are calculated by probabilistic design system on account of uncertainty distributions of environmental excitations and structural resistance parameters.According to the research results,the soft-stiff design schemes for fixed OWT supports are economical and feasible compared with soft-soft and stiff-stiff design schemes.Jacket support turns to the best,while there is excessive deflection in monopile support and excessive stress in tripod support.The method would contribute effectively towards selection of different structures and decision of design schemes.
作者
孟珣
刘萌
唐小惠
刘潇涵
Meng Xun;Liu Meng;Tang Xiaohui;Liu Xiaohan(College of Engineering,Ocean University of China,Qingdao266100,China;Ocean Engineering Key Laboratory of Shandong Province,Qingdao266100,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2018年第11期3215-3223,共9页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(51309209)
国家自然科学基金重大项目(51490675)
关键词
海上风力机
结构优化
可靠性分析
固有频率
单立柱支撑
单立柱三桩支撑
导管架式支撑
offshore wind turbines(OWTs)
structural optimization
reliability analysis
natural freqnencies
monopile supports
tripod supports
lattice supports
