Offshore Wind Turbines (OWT) indeep-water sites of 50 meters and more require floating substructures. This paper will present a test facility for piles to be used for anchoring floating offshore substructures, in particular a Tension Leg Platform (TLP) substructure. Especially the measurement equipment, the loading cell, the controller technology and the automation will be highlighted. Another focus will be on the scaling laws for the pile and the soil. The paper will also provide an insight into the first experimental studies and their results. Beginning with the bracing types of the ropes between the piles and the OWT TLP substructure, there are two experimental set-ups. Firstly, piles loaded along longitudinal axis and secondly piles loaded with inclined forces transverse to the longitudinal axis. These scenarios are based on the specific loading from the buoyancy force, wave and wind loading. In this model test, the focus is on quasi-static pull-out tests with pulsating stress and cyclic tests with harmonic excitation.
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