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Bottom-fixed foundations currently dominate the offshore wind market. The installation of monopiles for offshore wind turbines by vibration is a promising alternative to the conventional impact-driven technique. Despite being a low noise, time-efficient and cost-effective alternative, take-up of this method has been slow because uncertainties remain on the pile drivability and post-installation performance of vibro-installed monopiles, which translates to risk for the industry. Carrying out real scale field tests to increase understanding is extremely expensive and time-consuming. In contrast, centrifuge model tests are an alternative for investigating the impact of vibro-installation on the post installation performance of monopiles for different soil conditions. The paper presents the development and first use of a mini vibro-driver in a geotechnical centrifuge. It highlights the importance of performing tests in such a way as to appropriately replicate soil mechanisms during vibro-driving. Finally, results from an initial pile installation test in the centrifuge are presented.
|Title of host publication||11th International Conference on Stress Wave Theory and Design and Testing Methods for Deep Foundations (SW2022)|
|Publication status||Published - 2022|
|Event||11th International Conference on Stress Wave Theory and Design and Testing Methods for Deep Foundations - Rotterdam, Netherlands|
Duration: 20 Sep 2022 → 23 Sep 2022
|Conference||11th International Conference on Stress Wave Theory and Design and Testing Methods for Deep Foundations|
|Period||20/09/22 → 23/09/22|
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Understanding vibratory piles in sand: installation and lateral response
31/03/20 → 30/03/23