Fatigue reliability analysis of wind turbine tower under random wind load

被引：62
作者：
Fu, Bing [1 ]
Zhao, Jianbin [1 ]
Li, Bingqing [2 ]
Yao, Jing [3 ]
Teifouet, Armand Robinson Mouafo [2 ]
Sun, Liyun [2 ]
Wang, Zhenyu [2 ]
机构：
[1] Shenyang Jianzhu Univ, Sch Civil Engn, Shenyang 110168, Liaoning, Peoples R China
[2] Zhejiang Univ, Coll Civil Engn & Architecture, Hangzhou 310058, Zhejiang, Peoples R China
[3] Shenyang Jianzhu Univ, Sch Commun Engn, Shenyang 110168, Liaoning, Peoples R China
来源：
STRUCTURAL SAFETY | 2020年 / 87卷
基金：
中国国家自然科学基金;
关键词：
Wind turbines; Probability density evolution; Fatigue reliability; Orthogonal expansion; Rain flow counting method; PROPER ORTHOGONAL DECOMPOSITION; STEEL;
D O I：
10.1016/j.strusafe.2020.101982
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
It is important to understand the vibration response and fatigue characteristics of the wind turbine structure. The fatigue reliability of the tower flange and bolt is studied in this paper. Firstly, by using the orthogonal expansion method and the Numerical-Theoretical method of random dynamic action, the random fluctuating wind field is expanded into a set of scattered points to calculate the wind load. The numerical calculation of the dynamic response of the wind turbine is verified with the measured data. Then, a fatigue probability calculation method based on the probability density evolution method is proposed. It is an effective method to substitute the fatigue damage D obtained by a rain flow counting method into the probability density evolution equation to solve the probability density of fatigue damage. In the end, a 1.5 MW wind turbine tower was taken as an example for analyzing the fatigue damage of its flange and bolt which considers the wind speed and wind direction distribution. By using the probability density evolution method, the evolution probability density curve clusters of the structural responses can be given accurately and quantitatively; thus, the reliability of the structure under random load can be conveniently obtained.
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页数：10
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