3D FE simulation of an instrumented monopile under quasi-static loading
3D FE simulation of an instrumented monopile under quasi-static loading
Monitoring accumulated data over years of operation of monopile-supported offshore wind turbines (OWTs) show a global mismatch between the as-designed and the actual performance of monopiles. This mismatch is due to the fact that design methodologies that were used are not suited for large-diameter piles. This mismatch is demonstrated, both in terms of natural frequency and bending moments in the pile. A 3D Finite Element (FE) model is developed in ABAQUS to simulate the response under quasi-static thrust loading for an instrumented monopile foundation located in the Belgium North Sea. The soil medium is modelled using the Hypoplastic constitutive model for sand and clay, and is calibrated using collected soil data from the Belgian North Sea. The developed FE model is used along with the calibrated soil models to investigate the monopile response under quasi-static load levels. The performance of the numerical model is evaluated by comparing the numerical results with the monitoring data.
Anis Kheffache; B. Stuyts; Carlos Sastre Jurado; Wout Weijtjens; Christof Devriendt
10th European Conference on Numerical Methods in Geotechnical Engineering (NUMGE2023)
12. Offshore geotechnics
https://doi.org/10.53243/NUMGE2023-344
Contact Information
- Secretary General - Dr A M McNamara
- Email: [email protected]
- Phone: +44 20 7040 8154
- City, University of London
- Northampton Square
- London EC1V 0HB. United Kingdom