Abstract
Single large diameter piles, known as monopiles, are, nowadays, the most common foundation type for offshore wind turbines (OWT). Several research initiatives have been focusing on improving the conventional design practice. The PISA (Pile Soil Analysis) joint industry research project resulted in a proposal for a new design methodology for OWT pile foundations, focusing on laterally loaded monopiles, with length-to-diameter ratios (L/D) between 2 and 6. The proposed methodology defines a one-dimensional (1D) model, based on the use of Timoshenko beam theory, which overcomes certain limitations in current design practice. Soil reaction components can either be generated through mathematical formulations (rule-based design method) or calibrated from 3D Finite Element (FE) models (numericalbased design method). The present paper examines the suitability of the numerical-based PISA design method for analyzing the pile response in sandy soil conditions. A concept design study for monopiles in dense sand is considered. Soil properties are based on realistic conditions encountered in the North Sea. The PISA methodology is compared with the methodology followed by the current design practice. Results are discussed and several conclusions are drawn providing factual insight into the applicability of the PISA design methodology for the design of monopiles in sand.
Original language | English |
---|---|
Title of host publication | Proceedings of the 4th International Symposium on Frontiers in Offshore Geotechnics |
Editors | Zack Westgate |
Pages | 1312-1322 |
Number of pages | 11 |
Publication status | Published - 2020 |
Event | 4th International Symposium on Frontiers in Offshore Geotechnics (postponed) - Austin, United States Duration: 8 Nov 2021 → 11 Nov 2021 https://www.isfog2020.org/ |
Conference
Conference | 4th International Symposium on Frontiers in Offshore Geotechnics (postponed) |
---|---|
Abbreviated title | ISFOG 2020 |
Country/Territory | United States |
City | Austin |
Period | 8/11/21 → 11/11/21 |
Internet address |
Bibliographical note
Accepted Author ManuscriptKeywords
- PISA
- offshore wind
- monopile
- concept design
- sand
- finite element modelling