Permanent Settlements in Horizontal-Axis Wind Turbine Towers Due to Seismic Loading
DOI:
https://doi.org/10.70567/mc.v41i9.48Keywords:
Soil modelling, Fluid-structure interaction, Soil-structure interaction, Computational aeroelasticity, Wind energy, Wind turbineAbstract
In recent years, there has been a prevailing trend in the design of horizontal-axis wind turbines: increasing their size to maximize the extraction of wind energy resources. Soil-structure interaction significantly influences the behavior of structures during seismic events. Neglecting this interaction can lead to inaccurate estimations of structural behavior, thereby compromising the safety and efficiency of the structure. Wind towers typically employ shallow foundations, which may experience permanent differential settlements during the seismic excitation phase due to soil stiffness degradation at their supports. Additionally, the load system resulting from fluid-structure interaction has a significant overturning component, further increasing the risk for this type of structure. The purpose of this study is to investigate potential permanent settlements in wind towers subjected to seismic activity in order to evaluate the performance of structures founded on shallow footings.
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