The influence of flexible towers on the dynamics of offshore wind turbine gravity base structures

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The influence of flexible towers on the dynamics of offshore wind turbine gravity base structures

O'Leary, Kieran; Pakrashi, Vikram; Kelliher, Denis
Date: 2018-09-25
Copyright: © 2018, Springer Nature Singapore Pte Ltd. The final authenticated publication is available at Springer via https://doi.org/10.1007/978-981-13-2306-5_72
Related: https://link.springer.com/chapter/10.1007%2F978-981-13-2306-5_72
Full text restriction information: Access to this article is restricted until 12 months after publication by request of the publisher.
Restriction lift date: 2019-09-25
Citation: O'Leary, K., Pakrashi, V. and Kelliher, D. (2018) 'The influence of flexible towers on the dynamics of offshore wind turbine gravity base structures', in Randolph, M. F., Doan, D. H., Tang, A. M., Bui, M. and Dinh, V. N. (eds.), Proceedings of the 1st Vietnam Symposium on Advances in Offshore Engineering (VSOE 2018), Hanoi, Vietnam, 1-3 November. Lecture Notes in Civil Engineering, 18, pp. 511-517. doi:10.1007/978-981-13-2306-5_72
Published Version: 10.1007/978-981-13-2306-5_72

Abstract:

With offshore wind turbines increasing in size, there is increasing interest in non-traditional support structures. New concepts include lightweight and flexible fiberglass composite towers that have potential benefits over traditional stiff steel towers. The aim of this paper was to assess how the combination of a more flexible wind turbine tower with an offshore concrete gravity base foundation would affect the dynamic response of the structure. The results focus on how the dynamic amplification factors (DAFs) change with varying levels of foundation stiffness during an extreme event (50 year return period extreme event).

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