Numerical investigation of drag embedment anchor model reduction for FOWTs in coarse and fine-grained Baltic Sea soil

Publikationstyp
Conference Paper
Publikationsdatum
2024-07-11
Sprache
English
Author
Dao, Duy Anh orcid-logo
Geotechnik und Baubetrieb B-5 
Dicke, Konrad 
Geotechnik und Baubetrieb B-5 
TORE-URI
https://hdl.handle.net/11420/48819
First published in
Lecture notes in civil engineering 
Number in series
395
Start Page
2871
End Page
2886
Citation
Proceedings of the 5th International Conference on Geotechnics for Sustainable Infrastructure Development, GEOTEC 2023: 2871–2886 (2024)
Contribution to Conference
5th International Conference on Geotechnics for Sustainable Infrastructure Development, GEOTEC 2023 
Publisher DOI
10.1007/978-981-99-9722-0_199
Scopus ID
2-s2.0-85200771367
Publisher
Springer
ISBN
9789819997213
Floating offshore wind turbines (FOWTs) enable renewable energy generation in deep ocean locations and provide economic and ecological benefits. However, reliable anchoring remains challenging due to a limited understanding of seabed-anchor interactions. This study examines the extent to which drag embedment anchor (DEA) models can be simplified without impacting penetration depth results in CEL simulations. Five DEA models with varying complexity were tested in typical Baltic Sea soils, sand and clay, modeled within a hypoplastic and visco-hypoplastic framework. Results suggest that the most simplified model is sufficient for sand. However, precaution should be taken when altering the anchor model in a clay environment due to the nonlinear relationship between model complexity and performance. This study offers insights into optimizing model complexity and computational efficiency in DEA simulations, ultimately improving safety and effectiveness for floating anchor installations.
Schlagworte
Baltic Sea
CEL
Drag embedment anchor (DEA)
FOWT
Hypoplasticity
Numerical analysis
Visco-hypoplasticity
DDC Class
624.15: Geotechnical Engineering