动载下基础环式风电机组基础渐进破坏及加固分析

李国俭; 赵长宇; 刘晨明; 刘树栋; 宋明诚; 谭芳

doi:10.19912/j.0254-0096.tynxb.2024-1981

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太阳能学报 ›› 2026, Vol. 47 ›› Issue (3) : 357-366. DOI: 10.19912/j.0254-0096.tynxb.2024-1981

动载下基础环式风电机组基础渐进破坏及加固分析

李国俭¹, 赵长宇¹, 刘晨明¹, 刘树栋¹, 宋明诚², 谭芳^2,3

作者信息 +

ANALYSIS ON PROGRESSIVE FAILURE AND REINFORCEMENT OF WIND TURBINE FOUNDATION WITH FOUNDATION-RING UNDER DYNAMIC LOADS

Li Guojian¹, Zhao Changyu¹, Liu Chenming¹, Liu Shudong¹, Song Mingcheng², Tan Fang^2,3

Author information +

文章历史 +

摘要

针对基础环式风电机组基础在长期风荷载作用下易发生疲劳损伤而出现开裂、冒浆的问题,采用midas FEA NX有限元软件建立风电机组基础的三维计算模型,对实测风荷载作用下的基础响应进行仿真,分析风电机组基础产生裂缝的位置及危险部位的应力水平,揭示风电机组基础的破坏发展过程。结果表明：在长期风荷载作用下,基础环与混凝土基础界面处易发生疲劳剪切破坏导致界面脱开,径向穿环钢筋出现应力集中现象,风电机组摇摆致使下法兰不断研磨混凝土形成空腔,基础环周边混凝土受到反复冲压而破溃。为解决上述问题,基于现场勘察以及基础环下法兰视频探测等结果,提出采用环氧树脂结构胶对基础环下法兰周边空腔及裂缝进行填充加固。加固后风电机组基础的相关数据表明,在相同实测风荷载作用下,加固后混凝土基础的整体性和抗裂性能均得到有效提高,加固风电机组运行状况良好。

Abstract

Considering the issues of cracking and slurry leakage resulting from the fatigue damage of a wind turbine foundation with a foundation-ring under long-term wind loads, a three-dimensional calculation model of the wind turbine foundation was established using the midas FEA NX finite element software. This model was employed to simulate the response of the foundation under the measured wind load. The location of cracks and the stress level in critical areas of the wind turbine foundation were analyzed, thereby revealing the failure development process of the foundation. The analysis results indicate that under long-term wind loads, the interface between the foundation ring and the concrete foundation experiences fatigue shear damage, leading to interface disengagement and stress concentration in the radial reinforcement. The swing of wind turbines causes the lower flange to continuously grind the concrete to form a cavity, and the concrete around the foundation ring is repeatedly stamped and broken. To solve the above problems, based on the on-site investigation and video detection of the flange located beneath the foundation ring, it is recommended to utilize structural epoxy adhesive to fill and reinforce the cavities and cracks surrounding the flange, thereby enhancing its structural integrity. The relevant data of the reinforced wind turbine foundation show that the integrity and crack resistance of the reinforced concrete foundation have been effectively enhanced under the same measured wind load, and the reinforced wind turbine is in good operating condition.

导出引用

李国俭, 赵长宇, 刘晨明, 刘树栋, 宋明诚, 谭芳. 动载下基础环式风电机组基础渐进破坏及加固分析[J]. 太阳能学报. 2026, 47(3): 357-366 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1981

Li Guojian, Zhao Changyu, Liu Chenming, Liu Shudong, Song Mingcheng, Tan Fang. ANALYSIS ON PROGRESSIVE FAILURE AND REINFORCEMENT OF WIND TURBINE FOUNDATION WITH FOUNDATION-RING UNDER DYNAMIC LOADS[J]. Acta Energiae Solaris Sinica. 2026, 47(3): 357-366 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1981

中图分类号： TU476.1

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