Tripile (foundation)

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Offshore wind turbine on a tripile foundation (yellow)
A tripile support cross at the Cuxhaven Steel Construction plant . The dimensions can be guessed from the markings on the gantry crane.

In the construction industry, a form of foundation for offshore structures is referred to as a tripile foundation or tripiles for short ([ traɪ paɪl ]; composed of the Greek prefix tri- for “three (fold)” and the English word pile for “ pile ”) . The construction was developed by Bard Engineering GmbH in Emden .

A tripile foundation consists of three, usually round steel piles, which are driven up to 30 m deep into the seabed. The piles are arranged in an equilateral triangle and end just above the water surface. There they are connected by an attached support cross. The support cross extends the posts a little and then brings them together. An offshore structure can be erected on the supporting cross. Tripiles were developed for wind turbines . This form of foundation is used in water depths between 25 and 50 m. The tripile foundation is a further development of the foundation with a single monopile and is characterized by lower costs in comparison. By using three posts instead of one, the diameter can be chosen to be smaller. This means that less steel is required in production and the ramming process is easier.

Web links

Commons : Tripiles for Offshore Wind Turbines  - Collection of Images, Videos and Audio Files

Individual evidence

  1. ↑ a b c "Tripile": Foundation for offshore systems. (PDF; 660 kB) Kranmagazin, No. 67, 2009, pp. 34–37 , accessed on November 16, 2013 .
  2. ↑ a b Foundations and foundation structures. offshore-windenergie.net, archived from the original on January 10, 2015 ; Retrieved November 16, 2013 .