摘要
为研究地震方向对15 MW海上风力机动力响应的影响,基于模态加速度法开发适用于地震-风-浪荷载联合作用下的海上风力机结构动力学仿真模型,并计算0°~360°风-地震耦合夹角下15 MW海上风力机在风-浪-震耦合工况下的支撑结构载荷、塔顶位移和加速度,并与若干典型仿真工况的计算结果进行比较。结果表明:风-地震耦合角度对风力机塔顶加速度影响显著,对塔顶位移和塔基弯矩的影响一定程度上取决于外部激励的输入。由此说明地震方向对大型海上风力机不可忽视。
To quantify the effect of earthquake directionality on the seismic behaviors of 15 MW monopile offshore wind turbines,a fully coupled simulation framework is developed based on the modal acceleration method.The dynamic responses of a 15 MW offshore wind turbine over the complete range of wind-earthquake misalignment angles(0°-360°)under wind-wave-earthquake environmental conditions are calculated.Tower-base bending moment,tower-top displacement,and tower-top acceleration of the wind turbine under several typical simulation conditions are compared.The results indicate that the tower-top acceleration is highly sensitive to the windearthquake misalignment angle,whereas the sensitivities of tower-top displacement and tower-base bending moment are governed by the external excitations.These findings underscore the necessity of explicitly accounting for the wind-earthquake coupling effect in the design and assessment of large-scale offshore wind turbines.
作者
马璐
张险峰
刘茜妮
秦明
傅广泽
杨阳
Ma Lu;Zhang Xianfeng;Liu Qianni;Qin Ming;Fu Guangze;Yang Yang(China Three Gorges Co.,Ltd.,Wuhan 430014,China;Faculty of Maritime and Transportation,Ningbo University,Ningbo 315211,China;State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China)
出处
《太阳能学报》
北大核心
2025年第12期617-625,共9页
Acta Energiae Solaris Sinica
基金
中国长江三峡集团有限公司科研项目(202303059)
国家自然科学基金(52476205)
大连理工大学海岸和近海工程国家重点实验室开放基金(LP2408)
高等学校学科创新引智计划(111计划)“跨海大桥安全保障与智能运行学科创新引智基地(D21013)”。
关键词
海上风力机
地震方向
动力响应
风-地震耦合
FAST
offshore wind turbines
earthquake directionality
dynamic response
wind-earthquake coupling
FAST
