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http://dx.doi.org/10.14481/jkges.2016.17.10.13

Spudcan Design under Combined Load in Southwestern Sea of Korea  

Yoo, Jinkwon (Department of Civil and Environmental Engineering, Hanyang University)
Park, Duhee (Department of Civil and Environmental Engineering, Hanyang University)
Mandokhail, Saeed-ullah Jan (Department of Civil and Environmental Engineering, Hanyang University)
Publication Information
Journal of the Korean GEO-environmental Society / v.17, no.10, 2016 , pp. 13-22 More about this Journal
Abstract
An optimized spudcan was designed for the Southwestern Sea, an area mostly comprised of sand and soft clay layers. The spudcan was designed using guidelines by SNAME, ISO, and InSafeJIP, as well as the yield surface for combined loads. The probe test method was applied to define a yield surface used in estimating spudcan stability. Numerical analyses that considered vertical, horizontal, and moment loads in Southwestern Sea resulted in a design of 8 m diameter spudcan. Additionally, the empirical equations suggested by previous studies can estimate a reasonable spudcan bearing capacity at shallow depth. Each yield surface calculated from Mohr Coulomb and Hardening soil model showed different shapes, however the yield surface also grew with increasing spudcan diameter. This yield surface is a useful reference, along with site investigation results and published guidelines, to estimate the stability of a spudcan in the Southwestern Sea.
Keywords
Jack-up barge; Spudcan; Combined loading; Bearing capacity; Yield surface;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 Brinkgreve, R., Vermeer, P. and Bakker, K. (1998), Plaxis: Finite element code for soil and rock analyses:[user's Guide], AA Balkema, pp. 1-376.
2 Byrne, B. and Houlsby, G. (2001), Observations of footing behaviour on loose carbonate sands, Geotechnique, Vol. 51, No. 5, pp. 463-466.   DOI
3 Drescher, A. and Michalowski, R. L. (2009), Shape factor sr for shallow footings, Geomechanics and Engineering, Vol. 1, No. 2, pp. 113-120.   DOI
4 Dunham, J. (1954), Pile foundations for buildings, Journal of the Soil Mechanics and Foundations Division, Vol. 80, No. 1, pp. 1-21.
5 Gottardi, G., Houlsby, G. and Butterfield, R. (1999), Plastic response of circular footings on sand under general planar loading, Geotechnique, Vol. 49, No. 4, pp. 453-470.   DOI
6 Govoni, L., Gourvenec, S. and Gottardi, G. (2010), Centrifuge modeling of circular shallow foundations on sand, International Journal of Physical Modelling in Geotechnics, Vol. 10, No. 2, pp. 35-46.   DOI
7 Hanna, A. and Meyerhof, G. (1980), Design charts for ultimate bearing capacity of foundations on sand overlying soft clay, Canadian Geotechnical Journal, Vol. 17, No. 2, pp. 300-303.   DOI
8 Hansen, J. B. (1970), A revised and extended formula for bearing capacity, Akademiet for de Tekniske Videnskaber, Vol. 28, pp. 5-11.
9 Hossain, M. and Randolph, M. (2010a), Deep-penetrating spudcan foundations on layered clays: centrifuge tests, Geotechnique, Vol. 60, No. 3, pp. 157-170.   DOI
10 Hossain, M. and Randolph, M. (2010b), Deep-penetrating spudcan foundations on layered clays: numerical analysis, Geotechnique, Vol. 60, No. 3, pp. 171-184.   DOI
11 Houlsby, G. and Martin, C. (2003), Undrained bearing capacity factors for conical footings on clay, Geotechnique, Vol. 53, No. 5, pp. 513-520.   DOI
12 Hu, P., Stanier, S., Cassidy, M. and Wang, D. (2013), Predicting peak resistance of spudcan penetrating sand overlying clay, Journal of Geotechnical and Geoenvironmental Engineering, Vol. 140, No. 2, pp. 04013009.   DOI
13 InSafeJIP (2011), InSafeJIP: Improved guidelines for the prediction of geotechnical performance of spudcan foundations during installation and removal of jack-up units, RPS Energy, pp. 1-124.
14 ISO (2009), Petroleum and natural gas industries-site-specific assessment of mobile offshore units-, International Organization for Standardization, pp. 1-288.
15 Itasca, F. (2011), Fast lagrangian analysis of continua, Minneapolis, pp. 1-3058.
16 Kim, D.-J., Youn, J.-U., Jee, S.-H., Choi, J., Lee, J.-S. and Kim, D.-S. (2014), Numerical studies on bearing capacity factor $N{\gamma}$ and shape factor of strip and circular footings on sand according to dilatancy angle, Journal of the Korean Geotechnical Society, Vol. 30, No. 1, pp. 49-63 (in Korean).   DOI
17 Kim, S. R. (2012), Evaluation of vertical and horizontal bearing capacities of bucket foundations in clay, Ocean Engineering, Vol. 52, pp. 75-82.   DOI
18 Kohan, O., Gaudin, C., Cassidy, M. J. and Bienen, B. (2014), Spudcan extraction from deep embedment in soft clay, Applied Ocean Research, Vol. 48, pp. 126-136.   DOI
19 Loukidis, D. and Salgado, R. (2009), Bearing capacity of strip and circular footings in sand using finite elements, Computers and Geotechnics, Vol. 36, No. 5, pp. 871-879.   DOI
20 Martin, C. M. (1994), Physical and numerical modelling of offshore foundations under combined loads, University of Oxford, pp. 1-306.
21 Meyerhof, G. G. (1963), Some recent research on the bearing capacity of foundations, Canadian Geotechnical Journal, Vol. 1, No. 1, pp. 16-26.   DOI
22 MICHALOWSKIC, R. (2001), Upper-bound load estimates on square and rectangular footings, Geotechnique, Vol. 51, No. 9, pp. 787-798.   DOI
23 Mitchell, J. K. and Gardner, W. S. (1975), In situ measurement of volume change characteristics, In Situ Measurement of Soil Properties: ASCE, pp. 279.
24 PLAXIS-B.V. (2010), PLAXIS 3D reference manual: Delft, Netherlands: Plaxis Company, pp. 1-364.
25 Purwana, O., Leung, C., Chow, Y. and Foo, K. (2005), Influence of base suction on extraction of jack-up spudcans, Geotechnique, Vol. 55, No. 10, pp. 741-753.   DOI
26 SNAME (2008), Guideline for site specific assessment of mobile jack-up units, The society of naval architects & marine engineers, New Jersy, City, NJ, USA, pp. 1-366.
27 Teh, K. and Leung, C. (2010), Centrifuge model study of spudcan penetration in sand overlying clay, Geotechnique, Vol. 60, No. 11, pp. 825-842.   DOI
28 Teh, K., Leung, C. and Chow, Y. (2007), Some considerations for predicting spudcan penetration resistance in two-layered soil using miniature penetrometer, Offshore site investigation and geotechnics, Confronting New Challenges and Sharing Knowledge: Society of Underwater Technology, pp. 47-52.
29 Terzaghi, K. (1943), Theory of consolidation, Wiley Online Library, pp. 1-510.
30 Vesic, A. (1975), Bearing capacity of shallow foundations, foundation engineering handbook, Winterkorn and Fang, Ed: Van Nostrand Reinhold Company, New York, pp. 121-147.
31 Zhang, Y., Bienen, B., Cassidy, M. J. and Gourvenec, S. (2011), The undrained bearing capacity of a spudcan foundation under combined loading in soft clay, Marine Structures, Vol. 24, No. 4, pp. 459-477.   DOI
32 Zhao, J., Duan, M., Zhang, A., Wang, F. and Zhang, M. (2014), Bearing capacity of square spudcan of jack-up rig based on a three-dimensional failure mechanism, Ships and Offshore Structures, Vol. 9, No. 2, pp. 149-160.   DOI