桁架式风力机支撑结构法兰节点可靠度经时演化分析

周东; 罗宇骁; 衡俊霖; 戴靠山; 刘仰昭; 裘科一

doi:10.19912/j.0254-0096.tynxb.2025-0432

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太阳能学报 ›› 2026, Vol. 47 ›› Issue (7) : 212-221. DOI: 10.19912/j.0254-0096.tynxb.2025-0432

桁架式风力机支撑结构法兰节点可靠度经时演化分析

周东¹, 罗宇骁¹, 衡俊霖¹, 戴靠山¹, 刘仰昭¹, 裘科一²

作者信息 +

TIME-DEPENDENT RELIABILITY EVOLUTION ANALYSIS OF FLANGE JOINTS IN TRUSS-TYPE WIND TURBINE SUPPORT STRUCTURES

Zhou Dong¹, Luo Yuxiao¹, Heng Junlin¹, Dai Kaoshan¹, Liu Yangzhao¹, Qiu Keyi²

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文章历史 +

摘要

为评估新型桁架式风力机支撑结构的法兰节点可靠度在疲劳荷载下的经时演化机制,该文基于多物理场耦合仿真模拟,建立高强螺栓疲劳失效概率预测模型,分析不同数量螺栓失效对法兰节点极限承载力的影响。进一步,考虑风速-风向联合分布,量化高强螺栓疲劳损伤随服役年限的演化规律,据此预测法兰节点结构失效概率演化趋势。结果表明,桁架式风力机支撑结构法兰节点中连接螺栓的疲劳损伤逐年累积,其失效概率在服役15 a后急剧增加,导致节点整体承载力显著下降。结合风场实测数据,提出适用于桁架式风力机支撑结构的疲劳损伤评估方法,揭示了高强螺栓疲劳损伤累积对法兰节点可靠度演化的影响规律。

Abstract

To evaluate the time-dependent reliability evolution mechanism of flange joints in innovative truss-type wind turbine support structures under fatigue loads, this paper establishes a fatigue failure probability prediction model for high-strength bolts based on multi-physics coupled simulation. The effect of different bolt failure numbers on the ultimate bearing capacity of flange joints is analyzed. Considering the wind speed-direction joint distribution, the time-varying fatigue damage characteristics of high-strength bolts during service are quantified, and the evolutionary trend of structural failure probability for flange joints is predicted. The results show that the fatigue damage of connecting bolts in truss-type wind turbine flange joints accumulates continuously with service time, and the failure probability increases significantly after 15 years of service, leading to an obvious reduction in the overall bearing capacity of the joints. Combined with field measured wind data, a fatigue damage evaluation method suitable for truss-type wind turbine support structures is proposed, which reveals the influence law of cumulative bolt fatigue damage on the flange joint reliability and its time-dependent evolution of flange joints.

导出引用

周东, 罗宇骁, 衡俊霖, 戴靠山, 刘仰昭, 裘科一. 桁架式风力机支撑结构法兰节点可靠度经时演化分析[J]. 太阳能学报. 2026, 47(7): 212-221 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0432

Zhou Dong, Luo Yuxiao, Heng Junlin, Dai Kaoshan, Liu Yangzhao, Qiu Keyi. TIME-DEPENDENT RELIABILITY EVOLUTION ANALYSIS OF FLANGE JOINTS IN TRUSS-TYPE WIND TURBINE SUPPORT STRUCTURES[J]. Acta Energiae Solaris Sinica. 2026, 47(7): 212-221 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0432

中图分类号： TK83

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