Enhancing Structural Performance of Monopiles Using Extenders: A Comparative Study on Lateral Pile Displacement and Load Capacity-Video

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The presentation proposes a novel way to improve monopile foundations for offshore wind: attach two prefabricated reinforced-concrete footings around the pile, potentially extending its use to deeper waters. Finite-element pushover analyses at a 50-meter water depth compared a bare monopile with footing configurations, using simplified soil modeling. Results suggest the footings can improve lateral capacity by about 30%, particularly when base friction is included. Resistance comes from soil pressure, footing friction, and footing rotation. The concept has not yet been built. Future work will examine grout-interface behavior, structural forces, construction and installation, and footing dimensions.

Keywords

offshore wind

monopile foundations

reinforced-concrete footings

finite-element analysis

lateral capacity