Reinforced and prestressed concrete structures for wind energy converters


As part of the wind energy research at the Institute for Lightweight Structures and Conceptual Design (ILEK) of Stuttgart University research and development work is conducted for the design of structurally optimized towers for offshore wind energy converters. The towers consist of precast segments made out of ultra high performance concrete (UHPC) which are prestressed with external tendons.




Construction material


Studies to investigate the material characteristics of ultra-high performance fibre-reinforced concrete (UHPFRC)



Structural analysis


Static and dynamic analysis (particularly determination of the resonance frequency) of the tower.



Measurements of limit states


  •  load bearing capacity
  •  second order analysis of deformations and internal forces
  •  measurements on cross-section level
  •  fatigue check
  •  serviceability



Nodal points


Studies on the load bearing capacity of segmental joints





segmental construction


  •  unbonded prestressing
  •  segmental joints