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Comparison of Analysis Methods for Designed Spudcan Bearing Capacity and Penetration Behavior for Southwest Sea Soil
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 Title & Authors
Comparison of Analysis Methods for Designed Spudcan Bearing Capacity and Penetration Behavior for Southwest Sea Soil
Jin, Haibin; Jang, Beom-Seon; Choi, Jun-Hwan; Zhao, Jun; Kang, Sung-Wook;
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Jack-up type WTIV(Wind Turbine Installation Vessel) is used to avoid the effects of waves when installing wind turbines in the Southwest Sea of South Korea. During the preloading procedure, unexpected penetration may cause some risks such as excessive penetration or punch-through failure. To ensure the safety of the WTIV during preloading, the bearing capacities should be evaluated based on the soil data at each borehole. Eight boreholes (OW-1 to -8) have been drilled in the Southwest Sea of South Korea. The bearing capacities of a spudcan designed to be used in this district are calculated using both a conventional analysis and finite element analysis with the soil properties of OW-1 to -8. A finite element analysis is carried out for OW-1, -3, and -4 to gain an in-depth understanding of the soil behavior during the penetration. OW-1, -3, and -4 are representative boreholes for a strong layer overlying a soft layer, a general soft layer, and a soft layer overlying a strong layer, respectively. The resultant bearing capacity curves versus the depth of the numerical analysis are compared with the conventional method. The results show that the conventional analysis is conservative. Case studies for different spudcan areas and shapes are also conducted to seek an appropriate spudcan type for the Southwest Sea of South Korea. Finally, a spudcan with a rectangular shape and a bearing area of is selected.
Spudcan;Sand overlying clay;Penetration depth;Bearing capacity;Conventional analysis;Numerical analysis;
 Cited by
Das, B.M., 2009. Principles of Geotechnical Engineering. 7th Edition, PWS Publishing Co., Boston.

Einav, I., Randolph, M.F., 2005. Combining upper Bound and Strain Path Methods for Evaluating Penetration Resistance. International Journal for Numerical Methods in Engineering, 63(14), 1991-2016. crossref(new window)

Hossain, M.S., Randolph, M.F., 2009. New Mechanism-based Design Approach for Spudcan Foundations on Single Layer Clay. Journal of Geotechnical and Geoenvironmental Engineering, 135(9), 1264-1274. crossref(new window)

Liu, J., Hu, Y.X., Kong, X.J., 2005. Deep Penetration of Spudcan Foundation into Double Layered Soils. China Ocean Engineering, 19(2), 309-324.

Menzies, D., Roper, R., 2008. Comparison of Jackup Rig Spudcan Penetration Methods in Clay. Proceedings of the Offshore Technology Conference, Houston, TX, USA, Paper OTC 19545.

Qiu, G., Grabe, J., 2012. Numerical Investigation of Bearing Capacity Due to Spudcan Penetration in Sand Overlying Clay. Canadian Geotechnical Journal, 49(12), 1393-1407. crossref(new window)

Simulia, 2013. User's and Theory Manuals Version 6.13-1. Hibbit, Karlssonand Sorensen, Inc., RI, USA.

SNAME (Society of Naval Architecture and Marine Engineers), 2007. Guidelines for Site Specific Assessment of Mobile Jackup Units. Technical and Research Bulletin 5-5A. Jersey, City, NJ, USA: The Society of Naval Architects & Marine Engineers.

Teh, K.L., Leung, C.F., Chow, Y.K., Cassidy, M.J., 2010. Centrifuge Model Study of Spudcan Penetration in Sand Overlying Clay. Geotechnique, 60(11), 825-842. crossref(new window)

Tho, K.K., Leung, C.F., Chow, Y.K., Swaddiwudhipong, S., 2012. Eulerian Finite-Element Technique for Analysis of Jack-Up Spudcan Penetration. International Journal of Geomechanics, 12(1), 64-73. crossref(new window)

Zheng, J., Hossain, M.S., Wang, D., 2014. Numerical Modeling of Spudcan Deep Penetration in Three-Layer Clays. International Journal of Geomechanics, 10.1061/(ASCE)GM.1943-5622.0000439, 04014089. crossref(new window)