Geometrical Optimaization of Extendable Plate Anchor for Floating Offshore Wind through 1G Model Test
Geometrical Optimaization of Extendable Plate Anchor for Floating Offshore Wind through 1G Model Test
This paper introduces a new type of anchor and its geometrical optimization for floating offshore wind, which is named the Extendable plate anchor (ExPLA). This ExPLA extends in the ground pulled from the originally installed position and consists of two plates with a hinge connecting them. To evaluate the feasibility of the expandability of ExPLA, a series of model tests using a miniature anchor model were conducted. A ~1/100 scale anchor model which is 10-20 mm in width, 40mm in height, and 40 mm in length, with two plates connected by a hinge is embedded in the ground in the folded state and then pulled upward. Through these experiments, it was found that the anchor expands as the pull-out length increases. With the help of the index matching method, this extension process was visually observed. Through image analysis, the deployment angle of ExPLA was quantified, and the influence of two geometric parameters, the back slope angle and the dip angle, on the anchors expandability is evaluated. It was found that the back slope angle is the most dominant parameter in controlling expandability. As the dip angle increases, the pull-out length required for deployment decreases.
S. Nomura; K. Tani; Nallathamby Sivasithamparam
5th International Symposium on Frontiers in Offshore Geotechnics (ISFOG2025)
12 - Gravity base foundations, Drag and Plate Anchors
https://doi.org/10.53243/ISFOG2025-342
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