建筑钢结构进展2026，Vol.28Issue(8)：86-93,8.DOI:10.13969/j.jzgjgjz.20250105001
海上风电钢管混凝土导管架荷载-结构耦合动力响应分析
Coupled Load-Structure Dynamic Response of Offshore Wind Power Concrete-Filled Steel Tubular Jackets
摘要
Abstract
Jacket support structures are a predominant foundation form for offshore wind power development in transitional water depths(30-60 m).Although they provide superior structural stiffness compared to monopile foundations,their construction costs remain relatively high.This study proposes an optimized concrete-filled steel tube(CFST)composite structural solution.By implementing full-section concrete filling in the jacket corner columns,the material synergy effect of steel-concrete composite structures is fully exploited,achieving optimized steel wall thickness(17.3%reduction in steel consumption)while maintaining structural stiffness.Firstly,finite element numerical analysis models with and without concrete-filled corner columns were established to verify the bearing capacity of KK joints after concrete filling.The results show that the bearing capacity is greatly improved compared with traditional pure steel structures after concrete filling in the corner columns.Subsequently,a coupled load-structure numerical model for jacket-supported offshore wind turbines was developed to conduct time-domain coupled dynamic response simulations under both normal operation and extreme shutdown conditions.The results show that under normal operating conditions,the CFST jacket support structure exhibits reduced tower top displacement,foundation surge,and pitch motions compared to conventional steel structures,albeit with a slight increase in nacelle acceleration.The overall load response fluctuation amplitude decreases significantly,indicating improved fatigue resistance.Under extreme conditions,both dynamic responses and loads of the CFST structure are notably lower than those of the pure steel structure,indicating higher structural safety.关键词
海上风电/导管架基础/钢管混凝土/数值模拟/荷载-结构耦合动力响应Key words
offshore wind power/jacket foundation/concrete-filled steel tube/numerical simulation/load-structure coupled dynamic response分类
信息技术与安全科学引用本文复制引用
王李吉,王宇航,尹禧龙,王雪迪,张礼贤..海上风电钢管混凝土导管架荷载-结构耦合动力响应分析[J].建筑钢结构进展,2026,28(8):86-93,8.基金项目
上海勘测设计研究院有限公司科技项目"海上风电钢-混凝土组合支撑结构的性能与设计方法研究"(2021FD(8)020) （2021FD(8）
