運轉工況下風電塔抗震分析

戴靠山; 趙志; 易正翔; 盛超

doi:10.13374/j.issn2095-9389.2017.10.020

運轉工況下風電塔抗震分析

doi: 10.13374/j.issn2095-9389.2017.10.020

戴靠山^1,2, ,,
趙志¹,
易正翔³,
盛超¹

1) 同濟大學土木工程防災國家重點實驗室, 上海 200092
2) 能源工程安全與災害力學教育部重點實驗室(四川大學), 成都 610065
3) 加州大學洛杉磯分校土木與環境工程學院, 洛杉磯 90025

基金項目:

國家自然科學基金資助項目(51208382)

能源工程安全與災害力學教育部重點實驗室開放基金資助項目(EES201603)

上海市國際科技合作基金資助項目(16510711300)

詳細信息

中圖分類號: TU33⁺3
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出版歷程
- 收稿日期: 2017-01-17

Seismic analyses of wind turbine tower under operational conditions

1) State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China
2) Key Laboratory of Ministry of Education of China for Energy Engineering Safety and Disaster Mechanics, Sichuan University, Chengdu 610065, China
3) Department of Civil and Environment Engineering, University of California at Los Angeles, Los Angeles 90025, USA

摘要

摘要: 為了研究運轉工況下風電塔的地震響應及倒塔模式,使用風電塔設計軟件FAST建立風電塔模型,比較停機和運轉不同工況下的結構響應,并在運轉工況下通過改變地震動輸入方向研究不同風震組合角對結構響應的影響,得到最不利工況;使用ABAQUS建立風電塔的精細化有限元模型,將FAST計算的塔頂風荷載導入ABAQUS開展分析計算.將基于葉素理論計算的塔頂荷載與FAST計算結果進行對比,并進一步將彈性階段ABAQUS與FAST模擬的塔頂位移進行對比,校驗分析方法的合理性.利用ABAQUS模型將地震動調幅,開展倒塔模擬.研究結果表明運轉工況下最不利風震組合角是90°,強震下塑性鉸在塔身下部出現并向中上部發展,最終該風電塔在中上部發生破壞.
- 風電塔 /
- 風震組合 /
- 抗震分析 /
- 運轉工況 /
- 倒塔模擬
Abstract: In order to study seismic responses and collapse mode of a wind turbine tower under operational conditions, a wind turbine tower model was developed by the wind turbine design software FAST. The structural responses in idle condition and operational conditions were calculated and compared. The influences of different angles between wind and earthquake inputs on structural responses were investigated. A detailed finite element model of the same tower was developed with ABAQUS. Wind load effects induced by the blades were calculated by FAST simulations and were verified with the results estimated through the blade element theory. Elastic analysis results from the FAST model and the ABAQUS model were also compared for verification purposes. Tower collapse simulations were conducted under earthquake excitations using the ABAQUS model. Study results show that the case with a 90° angle between the wind and earthquake inputs is the most dangerous scenario that could occur for tower dynamic responses. Collapse simulations indicate that the plastic hinges are initiated from the bottom part of the tubular tower wall; later, they develop into the upper part of the structure too. The tower fails at the middle-upper part of the tower wall.
- wind turbine tower /
- wind-earthquake combination /
- seismic analysis /
- operational condition /
- collapse simulation

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參考文獻(12)

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