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Pile-grid foundations of onshore wind turbines considering soil-structure-interaction under seismic loading

  • In recent years, many onshore wind turbines are erected in seismic active regions and on soils with poor load bearing capacity, where pile grids are inevitable to transfer the loads into the ground. In this contribution, a realistic multi pile grid is designed to analyze the dynamics of a wind turbine tower including frequency dependent soil-structure-interaction. It turns out that different foundations on varying soil configurations heavily influence the vibration response. While the vibration amplitude is mostly attenuated, certain unfavorable combinations of structure and soil parameters lead to amplification in the range of the system's natural frequencies. This testifies the need for overall dynamic analysis in the assessment of the dynamic stability and the holistic frequency tuning of the turbines.

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Metadaten
Author:Philipp Michel, Christoph ButenwegORCiD, Sven Kinkel
DOI:https://doi.org/10.1016/j.soildyn.2018.03.009
ISSN:0267-7261
Parent Title (English):Soil Dynamics and Earthquake Engineering
Publisher:Elsevier
Place of publication:Amsterdam
Document Type:Article
Language:English
Year of Completion:2018
Date of the Publication (Server):2020/12/17
Volume:109
First Page:299
Last Page:311
Link:https://doi.org/10.1016/j.soildyn.2018.03.009
Zugriffsart:bezahl
Institutes:FH Aachen / Fachbereich Energietechnik
collections:Verlag / Edition Bentheim