Variation of Suction Foundation Stiffness of Offshore Wind Turbine under Horizontal Cyclic Load
晁娈娈① CHAO Luan-luan；吕村② LV Cun
（①菏泽城建工程发展集团有限公司，菏泽 274000；②青岛工学院建筑工程学院，青岛 266300）
（①Heze Urban Construction Engineering Development Group Co.，Ltd.，Heze 274000，China；
②School of Architecture and Engineering，Qingdao Institute of Technology，Qingdao 266300，China）
摘要： 依据海上风电场海床地质实际，通过BIM技术建立地质模型，并将其引入ABAQUS有限元软件，探讨循环风荷载作用下海上风机吸力基础的水平循环承载特性。发现，随着循环次数增加，荷载-位移曲线呈现“捏缩”现象；基础的水平循环承载力、水平刚度随循环次数增加逐渐降低，且在首次循环加载时降低显著；当竖向荷载由500kN增至1000kN时，基础水平循环承载力约提高8%，水平刚度提高15%，可知增加竖向荷载会对基础水平刚度产生显著影响。
Abstract: According to the actual seabed geology of offshore wind farms, a geological model is established through BIM technology, and it is introduced into ABAQUS finite element software to discuss the horizontal cyclic bearing characteristics of the suction foundation of offshore wind turbines under the action of cyclic wind loads. It was found that with the increase of the number of cycles, the load-displacement curve showed a "pinch" phenomenon; the horizontal cyclic bearing capacity and horizontal stiffness of the foundation gradually decreased with the increase of the number of cycles, and decreased significantly at the first cyclic loading; when the vertical load increased from 500 When kN increases to 1000 kN, the horizontal cyclic bearing capacity of the foundation increases by about 8%, and the horizontal stiffness increases by 15%. It can be seen that increasing the vertical load will have a significant impact on the horizontal stiffness of the foundation.
关键词： 海上风电基础；BIM技术；有限元分析；水平循环荷载
Key words: offshore wind power foundation；BIM technology；finite element analysis；horizontal cyclic load
中图分类号：TU476 文献标识码：A 文章编号：1006-4311（2022）22-088-03
DOI:10.3969/j.issn.1006-4311.2022.22.029.
文章出处：晁娈娈,吕村. 水平循环荷载下海上风机吸力基础刚度变化[J]. 价值工程,2022,41(22):88-90.
|
