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I. Fischer, M. Schönweger, J. Kollegger:
"Wind turbine towers out of semi-precast elements - Structural challenges of the erection process";
Talk: fib Symposium 2016, Cape Town; 2016-11-21 - 2016-11-23; in: "Performance-based approaches for concrete structures", (2016), ISBN: 978-2-88394-120-5; 375 - 376.

The increase of worldwide wind energy delivery output led to the design of wind turbines with big hub heights using tower structures out of concrete or the combined use of concrete and steel (hybrid tower structures). A new approach to constructing towers out of double walls (two thin concrete slabs connected by spacers) is presented in the current work. In order to show the feasibility of the proposed construction method a prototype was erected. The most relevant structural detailing of the prototype during all erection stages is part of this paper. The experiences and results gained from the prototype erection are promising and indicate that the new construction method is likely to establish itself on the market.

towers, wind turbines, precast concrete, double walls