Browse > Article
http://dx.doi.org/10.7843/kgs.2013.29.11.119

Horizontal Bearing Behavior of Group Suction Piles by Numerical Analysis  

Lee, Ju-Hyung (Geotechnical Engrg. Research Division, Korea Institute of Construction Technology)
Lee, Si-Hoon (Dept. of Civil Engrg., Dong-A Univ.)
Kim, Sung-Ryul (Dept. of Civil Engrg., Dong-A Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.29, no.11, 2013 , pp. 119-127 More about this Journal
Abstract
Recently, several researches on the development of new economical foundation types have been performed to support floating structures as many offshore structures have been constructed. This study focused on the evaluation of bearing capacity of group suction piles, which are connected by a concrete pile cap. The offshore floating structures are mainly subjected to horizontal loading, so the horizontal bearing capacities of the group suction piles were analyzed by performing 3-dimensional finite element analyses. The group suction piles are expected to behave as a rigid pile due to its shallow embedded depth. Therefore, the detailed soil modeling was necessary to simulate the bearing behavior of soils under low confining pressure. The modulus and the strength of soils were modelled to increase with effective confining pressure in soils. For the parametric study, the center-to-center spacing between piles was varied and two soil types of clay and sands were applied. The analyses results showed that the yielding load of the group pile increased with the increase of the pile spacing and the yielding load of the group piles with 5D spacing was about 3 times larger than that of the single pile with free rotation.
Keywords
Suction pile; Group pile; Bearing capacity; Numerical analysis; Floating structure;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Andersen, K. H., Murff, J. D., Randolph, M. F., Clukey, E. C., Erbrich, C. T., Jostad, H. P., Hansen, B., Aubeny, C., Sharma, P., and Supachawarote, C. (2005), Suction anchors for deepwater applications, Keynote Lecture, International Symposium on Frontiers in Offshore Geotechnics, Perth 2005, Proceedings, pp.3-30.
2 Bransby, M. F. and Randolph, M. F. (1997), Shallow foundation subject to combined loadings, Proc. 9th Int. Conf. Comput. Methods Adv. Geomech., Wuhan 3, pp.1947-1952.
3 Broms, B. (1964), Design of Laterally Loaded Piles, Proc. ASCE, Vol.91, No.SM3, pp.79-99.
4 Colliat, J. L., Boisard, P., Andersen, K., and Schroeder, K. (1995), Caisson Foundations as Alternative Anchors for Permanent Mooring of a Process Barge Offshore Congo, Proceedings, Offshore Technology Conference, OTC 7797, pp.919-929.
5 Houlsby, G. T. and Martin, C. M. (2003), Undrained bearing capacity factors for conical footing on clay, Geotechnique, Vol.53, No.5, pp.513-520.   DOI   ScienceOn
6 Hung, L. C. and Kim, S. R. (2012), Evaluation of vertical and horizontal bearing capacities of bucket foundations in clay, Ocean Engineering, Vol.52, pp.75-82.   DOI   ScienceOn
7 Janbu, N. (1963), Soil compressibility as determined by oedometer and triaxial test, Proc. of the European Conf. on Soil Mechanics and Foundation Engineering, Weisbaden 1, pp.19-25.
8 KICT (2008), Development of construction technology for concrete floated offshore infrastructures, Planning report, KICT 2008-043, pp.3-8.
9 KICT (2011), Development of novel technologies for low-cost and high-efficiency suction piles(II), KICT 2011-091, pp.53-56.
10 Kim, S. R., Jeong, J. U., Oh, M. H., and Kwon, O. S. (2012), Analysis of the bearing behavior of a tripod bucket installed in clay, Journal of The Korean Society of Civil Engineers, Vol.32, No.3C, pp.105-111.   과학기술학회마을
11 Mosallanezhad, M., Hataf, N., and Ghahramani, A. (2008), Experimental study of bearing capacity of granular soils, reinforced with innovative grid-anchor system, Geotechnical and Geological Engineering, Vol.26, pp.299-312.   DOI   ScienceOn
12 Randolph, M. F., Cassidy, M. J., Gourvenec, S. M., and Erbrich, C. (2005), Challenges of offshore geotechnical engineering, Proc. 16th Int. Conf. Soil Mech. Geotech. Engng, Osaka, 1, pp.123-176.
13 Simulia (2010), Abaqus user's Manual, Dassault Systemes Simulia Corp., Providence, RI.
14 Taiebat H. A. and Carter J. P. (2000), Numerical studies of the bearing capacity of shallow foundations on cohesive soil subjected to combined loading, Geotechnique, Vol.50, No.4, pp.409-418.   DOI   ScienceOn
15 Yun, G. and Bransby, M. F. (2007), The undrained vertical bearing capacity of skirted foundations in undrained soil, Soils and Foundations, Vol.47, No.3, pp.493-506.   DOI   ScienceOn