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To assess the long-term performance of Offshore Wind Turbines (OWTs), this study proposes a modified p-y analysis approach to predict the response of monopile foundations under cyclic loading conditions. Cyclic loading can induce soil degradation and pore pressure buildup in marine soils, leading to reduced soil stiffness and strength. The proposed approach incorporates these effects by adjusting the traditional p-y curves using p-multipliers and y-multipliers. These multipliers are determined based on the soil reaction calculated from the p-y analysis and empirical models for cyclic degradation and strain accumulation.

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Prediction of Long-Term Cyclic Response of OWT Foundations with a Modified p-y Modeling Approach

  • 会议论文

  • 发表日期：

    2025年

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  • Chi-Chin Tsai

摘要

To assess the long-term performance of Offshore Wind Turbines (OWTs), this study proposes a modified p-y analysis approach to predict the response of monopile foundations under cyclic loading conditions. Cyclic loading can induce soil degradation and pore pressure buildup in marine soils, leading to reduced soil stiffness and strength. The proposed approach incorporates these effects by adjusting the traditional p-y curves using p-multipliers and y-multipliers. These multipliers are determined based on the soil reaction calculated from the p-y analysis and empirical models for cyclic degradation and strain accumulation.