In a significant advancement for the offshore wind energy sector, researchers have unveiled critical insights into the performance of monopile foundations in heterogeneous soil conditions. This study, led by De-sen Kong from the Shandong Key Laboratory of Civil Engineering Disaster Prevention and Mitigation at Shandong University of Science and Technology, underscores the importance of understanding how large-diameter single-pile foundations respond to dynamic forces—an area that has far-reaching implications for the stability and efficiency of offshore wind farms.
As China continues to harness its extensive coastline for renewable energy, the research highlights how monopile foundations, which are favored for their cost-effectiveness and simpler installation processes, can be optimized for performance under challenging conditions. “Our findings reveal that the horizontal displacement along the pile shaft accumulates over time, which is crucial for ensuring the long-term stability of offshore wind structures,” said Kong. This accumulation of displacement is particularly concerning as it can lead to structural failures if not properly managed.
The study utilized advanced finite element analysis software, ABAQUS, to simulate the effects of wind, ocean currents, and wave forces on these foundations. The results indicate a complex interaction between the pile and the surrounding soil, particularly at varying depths. Notably, the maximum bending moment was found to occur in shallow soil layers, while soil resistance exhibited a cut-off point at about two-thirds of the pile’s buried depth. This nuanced understanding of soil behavior is vital for engineers tasked with designing resilient offshore structures.
With offshore wind energy projected to play a pivotal role in global energy transitions, the implications of this research extend beyond academic interest. The insights gained could lead to enhanced design protocols that increase the reliability and safety of wind farms, ultimately driving down costs and boosting investor confidence in renewable projects. Kong stressed, “By addressing the dynamic response characteristics of monopile foundations, we can mitigate risks associated with offshore wind installations, paving the way for more robust and economically viable energy solutions.”
This research was published in ‘工程科学学报’, which translates to the Journal of Engineering Science, and serves as a crucial resource for engineers and policymakers alike as they navigate the complexities of offshore wind power development. As the industry moves toward more ambitious projects, understanding the dynamics of monopile foundations in heterogeneous soil will be key to unlocking the full potential of offshore wind energy.
For more information about the research and ongoing projects, you can visit the Shandong University of Science and Technology.
