Browse > Article
http://dx.doi.org/10.7843/kgs.2019.35.12.101

Evaluation of the Moment Bearing Capacity of Offshore Bucket Platforms in Sand  

Vicent, Ssenyondo (Dept. of Civil Engrg., Dong-A Univ.)
Gu, Kyo-Young (Dept. of Civil and Environmental Eng., Seoul National Univ.)
Kim, Sung-Ryul (Dept. of Civil and Environmental Eng., Seoul National Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.35, no.12, 2019 , pp. 101-109 More about this Journal
Abstract
The bucket platform is a new structure suitable for construction of offshore bridge foundations and providing the temporary support for equipments and labour. The platform can be subjected to moment loading due to the eccentric loading or the horizontal load by wave and wind. Therefore, a three dimensional finite element analysis was performed to evaluate the moment bearing capacity of the bucket platform, varying soil density, the diameter and embedment depth of the bucket. The numerical modeling was verified and compared with the moment-rotation curve from a field loading test. The uniform sandy ground was assumed and the moment load was applied at the top plate of the platform, increasing bucket rotation. The moment-rotation relations were analyzed to determine the moment capacity, which was influenced by the embedment depth and diameter of the bucket. Finally, a preliminary design equation was suggested to estimate the moment bearing capacity.
Keywords
Bearing capacity; Bucket platform; Cut-off wall; Numerical simulation; Sand;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Janbu, N. (1963), "Soil Compressibility as Determined by Oedometer and Triaxial Tests", Proc. of European Conference on Soil Mechanics and Foundation Engineering, Wiesbaden, Germany, Vol.1, pp. 19-25.
2 Larsen, K. A., Ibsen, L. B., and Barari, A. (2013), "Modified Expression for the Failure Criterion of Bucket Foundations Subjected to Combined Loading", Canadian Geotechnical Journal, Vol.50, No.12, pp.1250-1259.   DOI
3 Mansur, C. I. and Kaufman, R. I. (1956), "Pile Tests, Low-Sill Structures, Old River, La.", Journal of the Soil Mechanics and Foundations Division, Vol.82, No.4, pp.1-33.
4 Simulia, D. S. (2010), Abaqus. User's Manual. Dassault systems Simulia corp, providence, RI.
5 Tran, N. X., Hung., L.C., and Kim, S. R. (2017), "Evaluation of Horizontal and Moment Bearing Capacities of Tripod Bucket Foundations in Sand", Ocean Engineering, Vol.140, pp.209-221.   DOI
6 Vicent, S. and Kim, S.R. (2018), "Evaluation of the Vertical Bearing Capacity of Offshore Bucket Platforms in Sand", Korean Geotechnical Society, Fall Conference 2018.
7 Villalobos, F. A. (2006), Model Testing of Foundations for Offshore Wind Turbines, Ph.D. Thesis, University of Oxford.
8 Villalobos, F. (2007), "Installation of Suction Caissons in Sand", Proc. of the 6th Chilean Conf. of Geotechnics (Congreso Chileno de Geotecnia).
9 Villalobos, F. A., Byrne, B. W., and Houlsby, G. T. (2009), "An Experimental Study of the Drained Capacity of Suction Caisson Foundations under Monotonic Loading for Offshore Applications" Soils and foundations, Vol.49. No.3, pp.477-488.   DOI
10 Achmus, M., Akdag, C. T., and Thieken, K. (2013), "Load-Bearing Behavior of Suction Bucket Foundations in Sand", Applied Ocean Research, Vol.43, pp.157-165.   DOI
11 Byrne, B. W. (2000), Investigations of Suction Caissons in Dense Sand, Ph.D. Thesis, University of Oxford, Oxford, U.K.
12 Byrne, B. W. and Houlsby, G. T. (1999), "Drained Behaviour of Suction Caisson Foundations on Very Dense Sand", Proc. of the Annual Offshore Technology Conference, Houston, Texas, 1, pp. 765-782.
13 Ibsen, L. B., Barari, A., and Larsen, K. A. (2014), "Adaptive Plasticity Model for Bucket Foundations", Journal of Engineering Mechanics, Vol.140, No.2, pp.361-373.   DOI
14 Graham, J., Pinkney, R. B., Lew, K. V., and Trainor, P. G. S. (1982), "Curve-Fitting and Laboratory Data", Canadian Geotechnical Journal, Vol.19, No.2, pp.201-205.   DOI
15 Houlsby, G. T. and Byrne, B. W. (2004), "Design Procedures for Installation of Suction Caissons in Sand", Proceedings of the Institution of Civil Engineers-Geotechnical Engineering, Vol.158, No.3, pp.135-144.
16 Houlsby, G. T., Kelly, R. B., Huxtable, J., and Byrne, B. W. (2005), "Field Trials of Suction Caissons in Sand for Offshore Wind Turbine Foundations", Geotechnique, Vol.56, No.1.
17 Ibsen, L. B., Barari, A., and Larsen, K. A. (2015), "Effect of Embedment on the Plastic Behavior of Bucket Foundations", Journal of Waterway, Port, Coastal, and Ocean Engineering, Vol.141, No.6, 06015005.   DOI
18 El-Reedy, M. A. (2012), Offshore structures: Design, Construction and Maintenance. Gulf Professional Publishing, Waltham, pp.234.
19 Byrne, B. W. and Houlsby, G. T. (2003), "Foundations for Offshore Wind Turbines", Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, A362(1813), pp.2909-2930.   DOI
20 EAU (2004), Recommendations of the Committee for Waterfront Structures, Harbours and Waterways, Ernst and Sohn, a Wiley company, Berlin, pp.12-13.
21 Ghaseminejad, V., Rowshanzamir, M. A., and Barari, A. (2018), "Predicting the Drained Capacity of Skirted Foundations under Uniaxial Loads", Proc. of GeoShanghai International Conference, Springer, Singapore, pp.718-725.