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http://dx.doi.org/10.7843/kgs.2016.32.12.69

Accumulated Rotations of Suction Bucket Foundations under Long-term Cyclic Loads in Dry Sandy Ground  

Lee, Si-Hoon (Rhehwa Engineering Co., LTD.)
Choi, Changho (Geotechnical Research Institute, Korea Institute of Civil Engrg. and Building Technology)
Kim, Sung-Ryul (Dept. of Civil Eng., Dong-A Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.32, no.12, 2016 , pp. 69-78 More about this Journal
Abstract
A suction bucket foundation has been considered to be a potential foundation type for offshore wind turbines. A suction bucket foundation is usually installed in soft soil, so the accumulated displacement of the foundation may occur under long-term cyclic loads. In this study, a series of 1-g model tests were performed to analyze the accumulated rotation of suction bucket foundations under long-term cyclic horizontal loads. The dry model ground was prepared to have two different soil densities by air-pluviation method. The model tests were performed varying the embedment depth of the suction bucket, the soil density, and the amplitude of cyclic load. A one-way horizontal cyclic load was applied over $10^4$ cycles. Test results showed that the accumulated rotation of the suction bucket foundation increased with the increase in the number of cycles and load magnitudes. Based on the model test results, a new equation was proposed to evaluate the accumulated rotation of the suction bucket foundations in dry sandy ground under long-term cyclic horizontal loads.
Keywords
Suction bucket foundation; Dry sandy ground; Accumulated rotation; Cyclic load; Model test;
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  • Reference
1 Bransby, M. F. and Randolph, M. F. (1998), "Combined Loading of Skirted Foundations", Geotechnique, 48, pp.637-655.   DOI
2 Byrne, B. W. (2000), "Investigations of Suction Caissons in Dense Sand", PhD Dissertation, Magdalen College, University of Oxford.
3 Cox, J. A., O'Loughlin, C. D., Cassidy, M., Bhattacharya, S., Gaudin, C., and Bienen, B. (2014), "Centrifuge Study on the Cyclic Performance of Caissons in Sand", International Journal of Physical modelling in Geotechnics, Vol.14, No.4, pp.99-115.   DOI
4 Det Norske Veritas (2007), "Design of Offshore Wind Turbine Structures", Offshore standard DNV-OS-J101.
5 Foglia, A., Ibsen, L. B., Nicolai, G., and Andersen, L. V. (2014), "Obsevations on Bucket Foundations under Cyclic Loading in Dense Saturated Sand", Proceedings of the 8 th international conference of physical modelling in geotechnics (ICPMG), CRC Press.
6 Houlsby, G. T., Ibsen, L. B., and Byrne, B. W. (2005), "Suction Caissons for Wind Turbines", Frontiers on Offshore Geotechnics (ISFOG 2005)-Gourvenec & Cassidy (eds), Taylor & Francis group, London, ISBN 041539063X, pp.75-93.
7 Hung, L. C. and Kim, S. R. (2014), "Evaluation of Undrained Bearing Capacities of Bucket Foundations under Combined Loads", Marine Georesources and Geotechnology 32, pp.76-92.   DOI
8 Lee, J. H., Do, J. U., and Kim, S. R. (2015), "A Comparative Study on the Resistances of Bucket Foundation in Sand with Different Installation Methods", Int. J. of Geomate, Vol.8, No.1, pp.1186-1189.
9 Kelly, R. B., Houlsby, G. T., and Byrne, B. W. (2006), "Transient Vertical Loading of Model Suction Saissons in a Pressure Chamber", Geotechnique, Vol.56, No.10, pp.665-675.   DOI
10 LeBlanc, C., Houlsby, G. T., and Byrne, B. (2010), "Response of Stiff Piles in Sand to Long-term Cyclic Lateral Loading", Geotechnique, Vol.60, No.2, pp.79-90.   DOI
11 Lee, S. H., Kim, S. R., Lee, J. Y., and Choi, C. H. (2014), "Development and Verification of Long-term Cyclic Loading Equipment to Analyze behavior of Foundation of Offshore Wind Turbine", Korean Geotechnical Engineering, Vol.30, No.10, pp.8-17. (in Korean)
12 Luke, A. M., Rauch, A. F., Olson, R. E., and Mecham, E. C. (2005), "Components of Suction Caisson Capacity Measured in Axial Pullout Tests", Ocean Engineering 32, pp.878-891.   DOI
13 Tjelta, T. I. and Haaland, G. (1993), "Novel Foundation Concept for a Jacket Finding its Place", Offshore site investigation and foundation behaviour 28, pp.717-718.   DOI
14 Wood, D. M. (2004), Geotechnical Modelling, Spon Press, New york, USA.
15 Villalobos, F. A. (2006), "Model Testing of Foundations for Offshore Wind Turbines", PhD dissertation, Keble College, University of Oxford.
16 Zhu, B., Byrne, B. W., and Houlsby, G. T. (2013), "Long-term Lateral Cyclic Response of Suction Caisson Foundations in Sand", Journal of Geotechnical and Geoenvironmental Engineering, ASCE, Vol.139, No.1, pp.73-83.   DOI
17 Been, K. and Jefferies, M. G. (1985), "A State Parameter for Sands", Geotechnique, Vol.35, No.2, pp.99-112.   DOI
18 Altaee, A. and Fellenius, B. H. (1994), "Physical Modeling in Sand", Canadian Geotechnical Journal, Vol.31, No.3, pp.420-431.   DOI