원심모형실험을 이용한 모래지반에 관입된 계류선 거동 평가
Evaluation of Behaviors on Mooring Line Embedded in Sand Using Centrifuge Test
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When an anchor penetrates and is installed under a seabed, a portion of the mooring line connected to the anchor is also embeddedunder the seabed. This embedded mooring line affects the capacity of the anchor in two ways. First, the frictional resistance that occurs between themooring line and the seabed reduces the pulling force acting on the anchor. Second, the embedded part of the mooring line forms a reverse catenaryshape due to the bearing resistance of the soil, so that an inclined pulling force is applied to the anchor. To evaluate the mooring line’s effect onthe capacity of an anchor in sand, centrifuge model tests were performed using two relative sand densities of 76% and 51% while changing theanchor depths. The test results showed that the load is reducedmuch more in deep and dense sand, and the inclination angle ofthe load is lowerin shallow and loose sand.
Abstract
When an anchor penetrates and is installed under a seabed, a portion of the mooring line connected to the anchor is also embeddedunder the seabed. This embedded mooring line affects the capacity of the anchor in two ways. First, the frictional resistance that occurs between themooring line and the seabed reduces the pulling force acting on the anchor. Second, the embedded part of the mooring line forms a reverse catenaryshape due to the bearing resistance of the soil, so that an inclined pulling force is applied to the anchor. To evaluate the mooring line’s effect onthe capacity of an anchor in sand, centrifuge model tests were performed using two relative sand densities of 76% and 51% while changing theanchor depths. The test results showed that the load is reducedmuch more in deep and dense sand, and the inclination angle ofthe load is lowerin shallow and loose sand.
참고문헌 (13)
- Andersen, K. H, "Suction Anchors for Deepwater Application", Proceedings of the International Symposium on Frontiers in Offshore Geotechnics(ISFOG), pp.3~30 (2005)
- Bang, S, "Calibration of Analytical Solution Using Centrifuge Model Tests on Mooring Lines", International Journal of Offshore and Polar Engineering, 10(3) (2000)
- Byrne, B.W, "Investigations of Suction Caissons in Dense Sand", 박사, pp.2000
- Degenkamp, G, "Soil Resistance to Embedded Anchor Chain in Soft Clay", Journal of Geotechnical Engineering, 115(10) (1989)
- Dutta, A, "Behavior of Embedded Mooring Chains in Clay during Chain Tensioning", Proceedings of the 21th Annual Offshore Technology Conference (1989)
- Elkhatib, S, "Installation and Pull-Out Capacities of Drag-In Plate Anchors", Proceedings of the twelfth International Offshore and Polar Engineering Conference, pp.648~654 (2002)
- 김동수, "A Newly Developed State-of-the-Art Geotechnical Centrifuge in Korea", KSCE Journal of Civil Engineering, 17(1), pp.77~84 (2013), 대한토목학회
- Neubecker, S.R, "Profile and Frictional Capacity of Embedded Anchor Chains", Journal of Geotechnical Engineering, 121(11), pp.9173~ (1995)
- Neubecker, S. R, "The Performance of Drag Anchor and Chain Systems in Cohesive Soil", Journal of Marine and Geotechnology, 14, pp.77~96 (1996)
- O’Neill, M.P, "Drag Anchor Fluke-Soil Interaction in Clays", Canadian Geotechnical Journal, 40(1), pp.78~94 (2003)
- Supachawarote, C, "Inclined Load Capacity of Suction Caisson in Clay", 박사, pp.2006
- Vivatrat, V, "The Influence of Chain Friction on Anchor Pile Design", Proceedings of the 14th Annual Offshore Technology Conference, pp.153~163 (1982)
- Zdravkovic L, "Pull-Out Capacity of Bucket Foundations in Soft Clay", Proceedings of the International Conference on Offshore Site Investigation and Foundation Behaviour, pp.301~324 (1998)