A p-y Modelling Approach to Predict Long-Term Cyclic Response of OWT Foundations
A p-y Modelling Approach to Predict Long-Term Cyclic Response of OWT Foundations
This study proposes a p-y based method to predict the long-term behavior of monopile foundations supporting offshore wind turbines (OWTs) under repeated loading. Cyclic loading in marine soil can cause strain accumulation and pore pressure buildup (undrained conditions), leading to reduced soil stiffness and strength. The proposed approach incorporates these degradation effects through empirical models that utilize p-y analysis results for a specific loading scenario. The model modifies a pre-selected p-y curve with p- and y-multipliers to account for cyclic degradation and strain accumulation, respectively. Centrifuge tests on a monopile embedded in marine soil validate the proposed method.
Chi-Chin Tsai; Louis Ge
5th International Symposium on Frontiers in Offshore Geotechnics (ISFOG2025)
9 - Monopile design to cyclic loads: quasi-static, dynamic and seismic loads
https://doi.org/10.53243/ISFOG2025-100
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