Plate anchors for floating offshore facilities: soil-anchor-floating system interactions
Plate anchors for floating offshore facilities: soil-anchor-floating system interactions
The embedded plate anchor and mooring system is an efficient and versatile deep-water foundation solution. The capacity of the anchoring system is enhanced by the strength and weight of the surrounding soil which resists uplift of the plate. It is essential to have a reliable estimation of the uplift capacity that the plate anchor can provide for the variety of loads that are transmitted via the mooring lines to the anchoring system, and this capacity is enhanced by effects that are highlighted in this study – including consolidation and added mass during dynamic events. A systematic numerical study captures the effects of sustained loading and consolidation on the changing static anchor capacity and the effects of the added mass during rapid loading conditions on the dynamic anchor capacity. The results quantify the potential additional components of capacity that are currently overlooked in standard geotechnical design practice. It is also shown that these effects can be captured through simple analytical expressions, which can be used to represent the changing static and dynamic anchor capacities in a model of the full floating system behaviour.
Kwa, Katherine
18faee0d-75d9-4683-a2c8-604625eecbb0
White, David
a986033d-d26d-4419-a3f3-20dc54efce93
1 May 2022
Kwa, Katherine
18faee0d-75d9-4683-a2c8-604625eecbb0
White, David
a986033d-d26d-4419-a3f3-20dc54efce93
Kwa, Katherine and White, David
(2022)
Plate anchors for floating offshore facilities: soil-anchor-floating system interactions.
In Proceedings of the 20th International Conference on Soil Mechanics and Geotechnical Engineering, Sydney 2022.
6 pp
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
The embedded plate anchor and mooring system is an efficient and versatile deep-water foundation solution. The capacity of the anchoring system is enhanced by the strength and weight of the surrounding soil which resists uplift of the plate. It is essential to have a reliable estimation of the uplift capacity that the plate anchor can provide for the variety of loads that are transmitted via the mooring lines to the anchoring system, and this capacity is enhanced by effects that are highlighted in this study – including consolidation and added mass during dynamic events. A systematic numerical study captures the effects of sustained loading and consolidation on the changing static anchor capacity and the effects of the added mass during rapid loading conditions on the dynamic anchor capacity. The results quantify the potential additional components of capacity that are currently overlooked in standard geotechnical design practice. It is also shown that these effects can be captured through simple analytical expressions, which can be used to represent the changing static and dynamic anchor capacities in a model of the full floating system behaviour.
Text
Kwa_et_al_2022-Plate anchors for floating offshore facilities: soil-anchor-floating system interactions
- Author's Original
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Published date: 1 May 2022
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Local EPrints ID: 469213
URI: http://eprints.soton.ac.uk/id/eprint/469213
PURE UUID: 0f496ca6-6eb7-4748-bc31-6727e1e55c06
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Date deposited: 09 Sep 2022 16:37
Last modified: 17 Mar 2024 03:57
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