n Journal of the South African Institution of Civil Engineering = Joernaal van die Suid-Afrikaanse Instituut van Siviele Ingenieurswese - Dynamic behaviour of normally reinforced concrete wind turbine support structures : technical paper
|Article Title||Dynamic behaviour of normally reinforced concrete wind turbine support structures : technical paper|
|© Publisher:||South African Institution Of Civil Engineering (SAICE)|
|Journal||Journal of the South African Institution of Civil Engineering = Joernaal van die Suid-Afrikaanse Instituut van Siviele Ingenieurswese|
|Affiliations||1 UWP Consulting and 2 Stellenbosch University|
|Publication Date||Dec 2015|
|Pages||38 - 44|
|Keyword(s)||Concrete wind turbine tower, Crack formation, Fundamental frequency, Resonance, Soil stiffness and Support structure|
Transportation logistics of large steel towers have led to concrete towers becoming a viable option. There are currently no design codes dealing exclusively with the design of concrete wind turbine towers. Wind turbine towers have strict constraints on the fundamental frequency of the tower to avoid resonance. This paper investigates the dynamic behaviour of wind turbine towers using nonlinear finite element modelling. Focus is placed on the effect of crack formation and soil stiffness on the fundamental frequency of the tower. An analytical model is then proposed that can be used in the primary design stage to determine the geometry of the tower that satisfies the fundamental frequency requirements.
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