Approvals for grouted joints in offshore structures in Germany

verfasst von

Peter Schaumann, Anne Bechtel, Stephan Lochte-Holtgreven, Ludger Lohaus, Nick Lindschulte, Robert Griese

Abstract

The offshore wind energy is an increasing market in Germany. By 2030 nearly 30 percent of electricity shall be gained by renewables. The offshore wind energy plays a significant role, so that in the next 15 years nearly 30 Gigawatt of electricity shall be installed offshore. Currently, several offshore wind projects are installed in the North and Baltic Sea, but most of the projects are consented and wait for the final 'go'. One 'hot' topic is the question of a reliable connection between the driven piles and the offshore substructures. The grouted joint as a tube-to-tube-connection is typically used for this connection. Due to missing approved national offshore guidelines for the design and construction of grouted joints and the grout materials, an approval in the individual case for the type of construction and the type of material is required. With this procedure, it is assured, that the type of construction is designed in the style of national valid technical guidelines and that the material fulfils national requirements regarding production, installation, and durability. The approval in the individual case consists of a request at the Federal Maritime and Hydrographic Agency which is accompanied by independent expert's reports. Even if approvals in the individual case are not common practice in Europe realized approval processes showed that the quality of the structural design and the reliability of grout materials for offshore structures increase significantly.

Organisationseinheit(en)

ForWind

Externe Organisation(en)

LPI Ingenieurgesellschaft mbH

Typ

Aufsatz in Konferenzband

Seiten

1621-1627

Anzahl der Seiten

7

Publikationsdatum

2013

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Erneuerbare Energien, Nachhaltigkeit und Umwelt

Ziele für nachhaltige Entwicklung

SDG 7 – Erschwingliche und saubere Energie