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Author(s):	Schaumann, Peter; Bechtel, Anne; Lochte-Holtgreven, Stephan; Wilke, Fabian
Title:
Abstract:	Grout-Verbindungen als hybride Rohr-in-Rohr-Steckverbindungen mit hochfester Vergussbetonfuge werden vielfach in Monopile-Tragstrukturen für Offshore-Windenergieanlagen eingesetzt. Gegenüber Grouted Joints in Jackets oder Tripods werden die Verbindungen in Monopiles überwiegend auf Biegung beansprucht. Etablierte Berechnungsverfahren liegen derzeit nur in begrenztem Umfang vor. Neben Ingenieurmodellen, die auf Grundlage der linearen Schalentheorie Spannungs- und Verzerrungszustände in der Verbindung vereinfacht approximieren, wurden in den letzten Jahren numerische Berechnungsverfahren entwickelt, die die geometrischen und materiellen Nichtlinearitäten biegebeanspruchter Verbindungen berücksichtigen. In diesem Beitrag werden drei Berechnungsverfahren vorgestellt, deren Detailierungsgrad anhand von gemessenen und berechneten Bauteilverformungen und Spannungen erläutert wird. Analysis methods for grouted joints in offshore wind energy converters under predominant bending. Grouted joints as hybrid tube-to-tube connections with high-strength concrete annulus are often used in monopile substructures for offshore wind energy conversion systems. Compared to jackets or tripods, grouted joints in monopiles are loaded by predominant bending moments. Currently, only a limited number of design and calculation methods for the stress design are available. Besides simplified engineering models based on linear shell theory, numerical calculation methods and models have been developed in recent years. Those models include material and geometrical nonlinearities of a grouted joint under predominant bending. In this paper three different analysis methods are presented, their accuracy is described by calculated and measured displacements and stresses.
Source:	Stahlbau 83 (2014), No. 8
Page/s:	509-515
Language of Publication:	German

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