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Bild: FRANKI Grundbau GmbH & Co. KG
Onshore wind power
Bored pile reinforcement cages for the Oste-Windpark
Seven wind turbines, about 180 meters high, are being erected by the district of Cuxhaven in Oberndorf. One of these high-performance turbines can supply several thousand households with green electricity. The SÜLZLE Stahlpartner branch in Dessau-Roßlau supplied the bored pile reinforcement cages, on behalf of FRANKI Grundbau GmbH & Co. KG from Seevetal. The construction project was divided into two construction phases: The first section already took place in 2018 with a total tonnage of around 230 tons and the second at the end of 2020 to mid-2021 with another around 360 tons of reinforcement for a total of seven wind turbines and crane parking areas. For the foundations of the bored piles, around 2,100 tons of reinforcing steel were also supplied by the SÜLZLE Stahlpartner site in Seelze in cooperation with Meyer Sonderbau GmbH.
Since the upper five meters of the baskets were not allowed to be welded, the competent SÜLZLE team braided the irons by hand. In addition, a steel casing pipe was proposed as a special solution by FRANKI Grundbau, which was installed externally over the bored pile reinforcement cages with a pipe length of up to 16 meters by SÜLZLE Stahlpartner. The casing pipes were necessary to prevent the reinforcement cages from shifting or bending in the soft clay soil after installation.