机电工程技术2024，Vol.53Issue(11)：193-196,227,5.DOI:10.3969/j.issn.1009-9492.2024-00031
地震载荷作用下风力发电塔响应分析
Seismic Dynamic Response Analysis of a Wind Power Tower
摘要
Abstract
The earthquake excitation seriously threatens the normal and stable operation of wind tower.Studies are carried on the seismic response of a wind turbine tower under two measured natural waves and one artificial wave excitation,and the impact of different seismic wave dimensions on the tower response.The results indicate that stress concentration is prone to occur near the wind turbine tower entrance.The maximum stress of the wind turbine tower occurs at the top of the tower,and its maximum stress does not exceed 160 MPa,which is lower than the yield strength of the wind turbine tower of 345 MPa.Under three types of seismic waves,the maximum displacement of the wind turbine tower occurs at the top of the tower,and the maximum displacement in the X direction does not exceed 0.1 m(with the blades located in the X direction),which is much smaller than the distance between the blades and the tower of 1.02 m.The seismic waves in the X direction have a significant impact on the stress at the top of the wind turbine tower,which is related to the direction where the concentrated mass of the blades and nacelle is located.The variation of seismic wave dimension has a relatively small impact on the displacement of the top of the tower.The influence of horizontal seismic waves on bending moment is significant,while the influence of vertical seismic waves on bending moment can be ignored.关键词
风力发电塔/地震波维数/地震响应Key words
wind power towers/seismic wave dimension/seismic response分类
信息技术与安全科学引用本文复制引用
柳柏魁,王鑫..地震载荷作用下风力发电塔响应分析[J].机电工程技术,2024,53(11):193-196,227,5.基金项目
辽宁省教育厅项目(LJ2019QL018) （LJ2019QL018）
