考虑土-结构相互作用的海上风力机结构振动控制研究  

Structural vibration control of offshore wind turbine considering soil-structure interaction

作　　者：韩东东 李昕[1] 王文华 HAN Dongdong;LI Xin;WANG Wenhua(State Key Lab of Coastal and Offshore Engineering,School of Hydraulic Engineering,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]大连理工大学水利工程学院海岸与近海工程国家重点实验室,大连116024

出　　处：《振动与冲击》2022年第7期283-290,共8页Journal of Vibration and Shock

基　　金：国家自然科学基金(51939002,52001052)。

摘　　要：利用耦合线性弹簧模型模拟桩基础和土体之间的相互作用,基于海上风力机整体结构耦合运动模型开发了可考虑土-结构相互作用的固定式海上风力机结构振动控制程序。选取5-MW单桩基础海上风力机为研究对象,基于不同边界条件样本风机动力反应特性完成了机舱位置调谐质量阻尼器(tuned mass damper,TMD)参数设计;基于海上风力机结构时频域响应变化规律及控制率揭示了TMD的减振机理及土-结构相互作用对于减振效果的影响。通过对比得出:考虑土-结构相互作用对海上风力机结构调谐质量阻尼器设计至关重要。Here,a coupled linear spring model was used to simulate interaction between pile foundation and soil body.Based on the overall structure coupled motion model of offshore wind turbine,a fixed offshore wind turbine structural vibration control program FAST-SC-SSI considering soil-structure interaction was developed.Taking a 5 MW single pile foundation offshore wind turbine as the study object,the parametric design of engine room position tuned mass damper(TMD) was completed based on characteristics of wind turbine dynamic response samples under different boundary conditions.Based on time-frequency domain response variation law and control rate of offshore wind turbine structure,the vibration reduction mechanism of TMD and effects of soil-structure interaction on vibration reduction effect were revealed.Through contrastive studying,it was shown that considering soil-structure interaction is very important for designing TMD of offshore wind turbine structure.

关 键 词：海上风力机 土-结构相互作用 振动控制 调谐质量阻尼器(TMD) 动力反应分析 

分 类 号：TK8[动力工程及工程热物理—流体机械及工程]