Durchrutschende Grout-Verbindungen in OWEA – Tragverhalten, Instandsetzung und Optimierung

verfasst von

Peter Schaumann, Stephan Lochte-Holtgreven, Ludger Lohaus, Nick Lindschulte

Abstract

Grouted joints are mainly used for the connection of foundation piles and substructures of offshore wind turbines. Grouted joints consist of tube-to-tube-connections where the annulus is filled with a high performance mortar. Since the early 90s, grouted joints have been installed in offshore wind energy converters with monopiles using plain steel sections with no additional mechanical interlock. During maintenance work vertical slippages have been detected at substructures with monopiles in Denmark, UK and the Netherlands. The movements may result from a loss of bond between steel and mortar. Within this paper the construction and the bearing behaviour of grouted joints is presented. Additionally experimental investigations are shown. Based on own experiences reasons for failure and repair opportunities are introduced and optimisation opportunities for future turbines are proposed.

Organisationseinheit(en)

Institut für Baustoffe

Typ

Artikel

Journal

STAHLBAU

Band

79

Seiten

637-647

Anzahl der Seiten

11

ISSN

0038-9145

Publikationsdatum

06.09.2010

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Tief- und Ingenieurbau, Bauwesen, Werkstoffmechanik, Maschinenbau, Metalle und Legierungen

Elektronische Version(en)

https://doi.org/10.1002/stab.201001357 (Zugang: Geschlossen)