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Publications
Liu, ZC. and Guedes Soares, C. (2024), Numerical study on the effect of cage reinforcement on the behaviour of the circular gravity cage, Advances in Maritime Technology and Engineering, Guedes Soares, C. & Santos T.A. (Eds.), Taylor and Francis, London, UK, pp. 541-545.
A method of reinforcing gravity cages by connecting the bottom ring and floating collar with vertical beams is explored. The objective is to prevent the volume of the gravity cage from reducing much when subjected to currents and waves. A numerical model of a full-scale gravity cage is built. The mooring forces and the cage volume subjected to uniform flow are calculated. Four beams connected to the bottom ring and the floating collar, are evenly distributed along the circumference of the collar. The thickness and stiffness of those components are varied and the results are compared with the ones of the cages with no reinforcement. It is found that the beams can contribute to protecting the cage volume, but they increase the mooring forces. In addition, from the calculation of full-scale gravity cages, there is no tilting of the cages as observed in the towing tests.
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