Spring bearings fitted to stop monopile stress cracks forming

Elastomeric spring bearings devised to reduce the chances of stress cracks appearing in offshore wind turbine monopiles have been fitted to 90 foundations at Scira’s giant 317MW Sheringham Shoal development off the east coast of England.

The steel and rubber bearings, which were delivered and installed by Trelleborg Offshore Norway, are designed to boost the vertical load capacity of the turbines at the grouted connection between the inner monopile pipe and outer transition piece (TP).

“The bearings developed by Trelleborg had to be compatible with the design of our wind turbines, which were already under construction, while also being able to significantly reduce the load on the grouted connections,” says Sigmund Lunde, representative for the bearings contract at Statoil, which along with

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