Impact of marine environmental corrosion on seismic performance of wind power tower

doi:10.16265/j.cnki.issn1003-3033.2024.S1.0048

Abstract

Abstract:

To study the impact of marine environmental corrosion on the seismic performance of wind power towers, a 3 MW offshore wind power tower was used as an example. Based on a universal finite element analysis platform, wind power tower analysis models before and after corrosion were established, and time history analysis was used to study the collapse mechanism of the wind power tower during earthquakes. Through modal analysis, the impact of marine corrosion on the frequency and mode of vibration of structures was studied. Three natural ground motions (two far-field motions and one near-field motion) were selected, and time history analysis was used to study the deformation and damage evolution of the wind power tower. The collapse mechanism of the wind power tower was revealed based on the calculation results. The research results show that marine corrosion has a relatively small impact on the frequency and mode of vibration of the wind power tower. Under the action of near-field or short-term earthquakes, marine corrosion will not significantly change the collapse mechanism of the wind power tower. Under the action of long-term earthquakes, the corroded parts of the wind power tower will be damaged first, which will trigger higher-order modes of vibration and cause significant changes in the seismic damage and collapse mechanism of the wind power tower.

Key words: marine environmental corrosion, wind power tower, seismic performance, collapse mechanism, drift angle

CLC Number:

X931工业安全(总论)

SUN Kui, GUO Changfeng. Impact of marine environmental corrosion on seismic performance of wind power tower[J]. China Safety Science Journal, 2024, 34(S1): 260-266.

Figures/Tables 14

Fig.1

Table 1

Fig.2

Fig.3

Table 2

Fig.4

Fig.5

Fig.6

Fig.7

Fig.8

Fig.9

Fig.10

Table 3

Fig.11

References 17

[1]	中华人民共和国中央人民政府.截至2022年底全国累计发电装机容量约25.6亿千瓦[Z].(2023-01-28).
[2]	KHODABUX W, CAUSON P, BRENNAN F. Profiling corrosion rates for offshore wind turbines with depth in the North Sea[J]. Energies, 2020, 13(10): 2 518-2 518.
[3]	XU Yazhou, REN Qianqian, ZHANG Hui, et al. Collapse analysis of a wind turbine tower with initial-imperfection subjected to near-field ground motions[J]. Structures, 2021, 29: 373-382.
[4]	PATIL A, JUNG S, KWON O S. Structural performance of a parked wind turbine tower subjected to strong ground motions[J]. Engineering Structures, 2016, 120: 92-102.
[5]	XU Shanhua, ZHANG Zongxing, QIN Guangchong. Study on the seismic performance of corroded H-shaped steel columns[J]. Engineering Structures, 2019, 191: 39-61. doi: 10.1016/j.engstruct.2019.04.037
[6]	何剑侠. 随机点蚀圆钢管构件力学性能劣化的数值分析[D]. 南京: 东南大学, 2018.
	HE Jianxia. Mechanical properties deterioration assessment of random pitting steel tube members using numerical method[D]. Nanjing: Southeast University, 2018.
[7]	MASAYUKI T, CHITOSHI M, HIROMI S, et al. Analytical investigation of influence of corrosion damage position on residual bending capacity of steel pipe pile[J]. Steel Construction Engineering. 2016, 23(90): 39-49.
[8]	陆萍, 黄珊秋, 张俊, 等. 风力机筒形塔架结构静动态特性的有限元分析[J]. 太阳能学报, 1997, 18(4): 359-364.
	LU Ping, HUANG Shanqiu, ZHANG Jun, et al. The finite element analysis on static and dynamic characteric of the conical tube tower structure for the wind turbine[J]. Acta Energy Solaris Sinica, 1997, 18(4): 359-364.
[9]	JTS 167-4—2012, 港口工程桩基规范[S].
[10]	ZHAO Weimin, WANG Yong, LIU Cun. Erosion-corrosion of thermally sprayed coatings in simulated splash zone[J]. Metallurgical Coatings and Thin Films, 2010, 205: 2 267-2 272.
[11]	JEOM K P, SUNG K K, SANG K L. Probabilistic corrosion rate estimation model for longitudinal strength members of bulk carriers[J]. Ocean Eng. 1998, 25: 837-860.
[12]	BAI Y, KIM Y, YAN H B, et al. H. Reassessment of the jacket structure due to uniform corrosion damage[J]. Ships Offshore Struct, 2016, 11: 105-112.
[13]	杨宏启. 海洋工程防腐涂层/碳钢体系的力学化学行为研究[D]. 大连: 大连理工大学, 2017.
	YANG Hongqi. A Study on mechano-chemical behavior of marine anti-corrosive coating/carbon steel system[D]. Dalian: Dalian University of Technology, 2017.
[14]	秦圣平, 崔维成, 沈凯. 船舶结构时变可靠性分析的一种非线性腐蚀模型[J]. 船舶力学, 2003, 7(1): 94-103.
	QIN Shengping, CUI Weicheng, SHEN Kai. A non-linear corrosion model for time variant reliability analysis of ship structures[J]. Journal of Ship Mechanics, 2003, 7(1): 94-103.
[15]	张新生, 常潆戈. 基于FA-BAS-ELM的海洋油气管道外腐蚀速率预测[J]. 中国安全科学学报, 2022, 32(2): 99-106. doi: 10.16265/j.cnki.issn1003-3033.2022.02.014
	ZHANG Xinsheng, CHANG Yingge. Prediction of external corrosion rate of offshore oil and gas pipelines based on FA-BAS-ELM[J]. China Safety Science Journal, 2022, 32(2): 99-106. doi: 10.16265/j.cnki.issn1003-3033.2022.02.014
[16]	张新生, 蔡宝泉. 基于改进随机森林模型的海底管道腐蚀预测[J]. 中国安全科学学报, 2021, 31(8): 69-74. doi: 10.16265/j.cnki.issn1003-3033.2021.08.010
	ZHANG Xinsheng, CAI Baoquan. Corrosion prediction of submarine pipelines based on improved Random Forest model[J]. China Safety Science Journal, 2021, 31(8): 69-74. doi: 10.16265/j.cnki.issn1003-3033.2021.08.010
[17]	GB 50011―2010, 建筑抗震设计规范(2016年版)[S].
	GB 50011-2010,Code for seismic design of buildings(2016 edition)[S].

模态阶数	未服役(服役期为0)		服役期20 a
模态阶数	频率/Hz	方向	频率/Hz	方向
1	0.351	水平	0.345	水平
2	0.358	水平	0.352	水平
3	0.852	扭转	0.849	扭转

地震波	断裂带/km	PGA/(cm·s^-2)	PGV∶PGA/s
El Centro	6.09	341.7	0.1
Nihonkai Chubu	14.0	58.6	—
Hyogoken-Nanbu	16.1	818.0	0.12

地震动波	模型1 (未服役)	模型2 (服役20 a)	增量/%
El Centro	1/68	1/67	1.5
Hyogoken Nanbu	1/109	1/107	1.9
Nihonkai Chubu	1/62	1/22	281.8