NEW HYBRID~2-TOWERS OPTIMIZE THE CONSTRUCTION AND ASSEMBLING OF ONSHORE WIND TURBINES

摘要

For the yield of renewable energies, wind offers many capabilities. The development and enhancement of wind turbines have a strong demand worldwide.rnEspecially, land-based turbines are in the need of immense hub heights (over 100m) to ensure economic operations. Involving that the turbines will become massive and require large transport plus assembly works.rnA research project funded by the State of Hesse, Germany, represent the most economical solution for high towers of wind turbines- the hybrid²-towers. The hybrid²-towers combine the materials concrete and steel analogous to their properties and thus improve the performance of the whole structure. The construction consists of prefabricated quarter-circle shaped concrete elements, which are connected with each other by a framework of common rolled steel sections or concrete beams to accelerate the operations on-site.rnWith this innovative construction principle, the self-weight of the concrete tower can be decreased up to 40 % in comparison to a full concrete tower and the costs for the assembling will be reduced tremendously.