Seismic analyses of wind turbine tower under operational conditions

DAI Kao-shan; ZHAO Zhi; YI Zheng-xiang; SHENG Chao

doi:10.13374/j.issn2095-9389.2017.10.020

Volume 39 Issue 10

Oct. 2017

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DAI Kao-shan, ZHAO Zhi, YI Zheng-xiang, SHENG Chao. Seismic analyses of wind turbine tower under operational conditions[J]. Chinese Journal of Engineering, 2017, 39(10): 1598-1605. doi: 10.13374/j.issn2095-9389.2017.10.020

Citation:

DAI Kao-shan, ZHAO Zhi, YI Zheng-xiang, SHENG Chao. Seismic analyses of wind turbine tower under operational conditions[J]. Chinese Journal of Engineering, 2017, 39(10): 1598-1605. doi: 10.13374/j.issn2095-9389.2017.10.020

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Seismic analyses of wind turbine tower under operational conditions

doi: 10.13374/j.issn2095-9389.2017.10.020

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

Received Date: 2017-01-17

Abstract

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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References(12)

References

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