海上风机半潜式基础概念设计与水动力性能分析

发布时间：2018-04-05 20:12

本文选题：海上风机　切入点：半潜式浮式基础　出处：《哈尔滨工程大学学报》2014年11期

【摘要】：针对5 MW海上风机动力响应较大的问题,提出了半潜型浮式基础的概念设计,研究了半潜式浮式基础在不同风浪环境下的运动响应和生存能力。考虑叶片空气动力载荷及风浪载荷,以及浮式基础与系泊系统的耦合,建立风机结构系统及水动力模型,采用动量-叶素理论计算叶片空气动力载荷,在频域范围内计算了载荷传递函数。计算分析浮式基础风机系统不同风浪情况下的时域动力响应,评估了半潜型浮式基础在极限海况下的生存能力。结果显示,半潜型浮式基础运动性能良好,且在极端海况下,各系泊缆安全系数均大于1.67,破损状况下安全系数均大于1.33,该浮式基础及其系泊系统具有足够的抵抗极端海况的能力。
[Abstract]:Aiming at the problem of large dynamic response of 5MW offshore fan, the conceptual design of semi-submersible floating foundation is put forward, and the motion response and survivability of semi-submersible floating foundation under different wind and wave environments are studied.Considering the aerodynamic load and wind wave load of blade, and the coupling of floating foundation and mooring system, the wind turbine structure system and hydrodynamic model are established, and the aerodynamic load of blade is calculated by the momentum-leaf element theory.The load transfer function is calculated in frequency domain.The time-domain dynamic responses of floating foundation fan system under different wind and wave conditions are calculated and analyzed, and the survivability of semi-submersible floating foundation under limited sea conditions is evaluated.The results show that the semi-submersible floating foundation has good motion performance, and in extreme sea conditions,The safety factor of each mooring cable is more than 1.67, and the safety factor is more than 1.33 under the condition of breakage. The floating foundation and its mooring system have sufficient ability to resist extreme sea conditions.
【作者单位】：天津大学建筑工程学院;天津大学水利工程仿真与安全国家重点实验室;
【基金】：教育部高校博士点基金资助项目(20110032110041) 国家自然科学基金资助项目(51279130) 创新群体基金资助项目(51321065)
【分类号】：TM614

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