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Laboratory experiments on the technical feasibility of the Ocean Battery suction foundation in sand

van de Loo, Koen (2020) Laboratory experiments on the technical feasibility of the Ocean Battery suction foundation in sand. Integration Project, Industrial Engineering and Management.

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Abstract

The proposed suction foundation design of the Ocean Battery introduces two elements that are completely novel to the existing technique of suction caisson anchoring; • A square rather than a cylindrical caisson shape • Multiple attached suction chambers The effects of applying these elements on the functioning of a suction foundation are not covered in literature and therefore unknown. Hence, experiments were performed to establish how these design elements influence the behaviour of the foundation and predict the technical feasibility of the design. It was experimentally found that applying a square caisson shape imposes an increased vulnerability to piping during suction assisted installation, caused by the corners of the shape. Multiple attached suction chambers showed worrying results under self-weight and suction assisted installation. The theoretical self-weight penetration depth of the system was not sufficient for successful suction installation. The validity of the installation tests should be questioned due to scaling issues, but based on these installation tests, the system can’t be installed. If it is possible to install the foundation successfully, the holding capacity of the foundation is not affected by the square shape and configuration. A safety factor of 16 was found together with sufficient resistance to cyclic loading, even in extreme conditions.

Item Type: Thesis (Integration Project)
Supervisor name: Vakis, A. and Geertsema, A.A. and Prins, W.A.
Degree programme: Industrial Engineering and Management
Thesis type: Integration Project
Language: English
Date Deposited: 10 Feb 2020 12:41
Last Modified: 10 Feb 2020 12:41
URI: https://fse.studenttheses.ub.rug.nl/id/eprint/21525

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