许新勇,许文杰,李强,张建伟,马颖

• 1:华北水利水电大学
• 2:水资源高效利用与保障工程河南省协同创新中心
• 3:河南省水工结构安全工程技术研究中心
• 4:广东奥港供水有限公司

摘要(Abstract)：

为了研究流固耦合作用下风力发电基础的损伤机理，建立了风力发电机组“叶片-塔筒-基础-地基”耦联系统模型，基于混凝土塑性损伤本构，探讨了不同的混凝土软化特性对基础损伤分布的影响，并揭示了随着风致荷载的增加，基础不同部位损伤的演化过程。结果表明：不同的混凝土软化段特性对基础损伤程度及范围有一定影响，但更多的是影响损伤发展的速率，即混凝土开裂后的承载能力降低的速率；应力最大值均出现在顺风载方向基础环对应下阶的底部，即，混凝土软化曲线越陡，基础应力值越大；在基础应力发展过程中，各工况下基础应力变化趋势基本一致，损伤首先出现在迎风侧方向基础环对应的下阶底部，并逐渐顺钢环边缘向两侧延展最终形成贯穿带，其中工况四损伤最大达到0.878。

关键词(KeyWords)： 风力发电机;耦联模型;塑性损伤本构;软化特性;损伤演化

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(51979109);; 河南省重点研发与推广项目(192102310015);; 河南省科技创新人才计划(174200510020);; 河南省高校科技创新团队支持计划(19IRTSTHN030);; 河南省科技攻关计划项目(162102210074)

作者(Author): 许新勇,许文杰,李强,张建伟,马颖

DOI: 10.13928/j.cnki.wrahe.2022.07.018

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