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http://dx.doi.org/10.7843/kgs.2016.32.11.5

Numerical Study on Lateral Pile Behaviors of Piled Gravity Base Foundations for Offshore Wind Turbine  

Seo, Ji-Hoon (Dept. of Civil Environmental Engrg., Kongju National Univ.)
Choo, Yun Wook (Dept. of Civil Environmental Engrg., Kongju National Univ.)
Goo, Jeong-Min (Dongmyeong Eng. Consultants & Architecture CO.)
Kim, Youngho (University of Western Australia COFS)
Park, Jae Hyun (Korea Institute of Civil Engrg. and Building Technology, Geotechnical Engrg. Research Institute)
Publication Information
Journal of the Korean Geotechnical Society / v.32, no.11, 2016 , pp. 5-19 More about this Journal
Abstract
This paper presents the results from three-dimensional finite element (FE) analysis undertaken to provide insight into the lateral behaviors of piled gravity base foundation (GBF) for offshore wind turbine. The piled GBF was originally developed to support the gravity based foundation in very soft clay soil. A GBF is supported by five piles in a cross arrangement to achieve additional vertical bearing capacity. This study considered four different cases including a) single pile, b) three-by-three group pile (with nine piles), c) cross-arrangement group pile (with five piles), and d) piled GBF. All the cases were installed in homogenous soft clay soil with undrained shear strength of 20 kPa. From the numerical results, p-y curves and thus P-multiplier was back-calculated. For the group pile cases, the group effect decreased with increasing the number of piles. Interestingly, for the piled GBF, the P-multipliers showed a unique trend, compared to the group pile cases. This study concluded that the global lateral behaviour of the piled GBF was influenced strongly by the interaction between GBF and contacted soil surface.
Keywords
Piled gravity base foundation; p-y curve; Lateral soil reaction force; Group pile; P-multiplier;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 Kwag, D., Oh, M., Kwon, O., and Bang, S. (2013), "Field Installation Tests of Monopod Suction Pile and Tripod Suction Buckets", Proc the ASME 2013 32nd Int Conf on Ocean, Offshore and Arctic Eng, OMAE2013, Nantes, France.
2 Matlock, H. (1970), "Correlations for Design of Laterally Loaded Piles in Soft Clay", Presented at the Second Annual Offshore Technology Conference, Houston, Texas, Vol.1, pp.577-588.
3 McClelland, B. and Focht Jr, J. A. (1956), "Soil Modulus for Laterally Loaded Piles", American Society of Civil Engineers - Proceedings - Journal of the Soil Mechanics and Foundations Division, Vol.82.
4 Brown, D. A., Reese, L. C., and O'Neil, M. W. (1987), "Behavior of a Large Scale Pile Group Subjected to Cyclic Lateral Loading", Journal of Geotech. Engrg., ASCE, Vol.113, No.11, pp.1326-1343.   DOI
5 Park, K. (2001), Estimation of Undrained Shear Strength of Inchon Marine Clay by Piezocone Penetration Test, Ms. Thesis, Inha University, Incheon, pp.45.
6 McVay, M., Casper, R., and Shang, T. I. (1995), "Lateral Response of Three-Row Groups in Loose to Dense Sands at 3D and 5D Pile Spacing", Journal of Geotechnical Engineering, Vol.121, pp.436-441.   DOI
7 McVay, M., Zhang, L., Molnit, T., and Lai, P. (1998), "Centrifuge Testing of Large Laterally Loaded Pile Groups in Sands", Journal of Geotechnical and Geoenvironmental Eng., Vol.124, pp.1016-1026.   DOI
8 O'Neill, M. W. and Murchison, J. M. (1983), "An Evaluation of p-y Relationships in Sands", Research Report No. GT-DF02-83. University of Houston, Department of Civil Engineering, May 1983.
9 Reese, L. C. and Junius D. A. (1977), Drilled Shaft Design and Construction Manual, U. S. Department of Transportation, Federal Highway Administration, Vol.2.
10 Reese, L. C. and Matlock, H. (1956), "Non-dimensional Solutions for Laterally Loaded Piles with Soil Modulus Assumed Proportional to Depth", Proc. VIII Texas Conf. on Soil Mech. and Foundation Eng., Bureau of Engineering Research, Texas.
11 Rollins, K. M., Peterson, K. T., and Weaver, T. J. (1998), "Lateral Load Behavior of Full-Scale Pile Group in Clay", Journal of Geotechnical and Geoenvironmental Eng., ASCE, Vol.132, No.10, pp.468-478.
12 Shin, Y., Langford, T., Cho, K., Park, J., and Park, J. (2014), "Design of Composite Pile Foundations for Offshore Wind Turbines", Proc. the Twenty-fourth Int. Ocean and Polar Eng. Conf., Busan, Korea.
13 Brown, D. A., Morrison, C., and Reese, L. C. (1988), "Lateral Load Behavior of Pile Group in Sand", Journal of Geotech. Eng, Vol.114, No.11, pp.1261-1276.   DOI
14 Byrne, B. W. and Houlsby, G. T. (2003), "Foundations for Offshore Wind Turbines", Philosophical Transactions of the Royal Society of London, Series A: Mathematical and Physical Sciences, Vol.361, pp.2909-2930.   DOI
15 Choo, Y. W. and Kim, D. (2016), "Experimental Development of the p-y Relationship for Large-Diameter Offshore Monopiles in Sands: Centrifuge Tests", Journal of Geotechnical and Geoenvironmental Eng., Vol.142, No.1, 04015058.   DOI
16 Choo, Y. W., Seo, J. H., Kim, Y. N., Goo, J. M., and Kim, Y. (2016), "Numerical Studies on Piled Gravity Base Foundation for Offshore Wind Turbine", Marine Georesources and Geotechnology, Vol.34, No.8, pp.729-740.   DOI
17 EWEA (2009), Wind Energy - The Facts. A Report by the European Wind Energy Association.
18 Chung, J. H., Park, S. B., and Lee, S. (2008), "Evaluation of Piezocone Factors Applicable to Soft Ground around Siwha Lake by Statistical Analysis", Journal of Korean Geotechnical Society, Vol.24, No.4, pp.90-100.
19 Dassault Systemes (2014), Abaqus 6.14 EF documentation. Rhode Island: Hibbitt, Karlsson & Sorensen, Inc.
20 Det Norske Veritas (DNV) (2014), "Design of Offshore Wind Turbine Structures", DNV-OS-J101, Hovik, Norway.
21 Haiderali, A. and Madabhushi, G. (2013), "Evaluation of the p-y Method in the Design of Monopiles for Offshore Wind Turbines", OTC 24088.
22 Houlsby, G. T. and Byrne, B. W. (2000), "Suction Caisson Foundations for Offshore Wind Turbines and Anemometer Masts", Wind Engineering, Vol.24, No.4, pp.249-255.   DOI
23 Ilyas, T., Leung, C. F., Chow, Y. K., and Budi, S. S. (2004), "Centrifuge Model Study of Laterally Loaded Pile Groups in Clay", Journal of Geotechnical and Geoenvironmental Eng, ASCE, Vol.130 No.3, pp.274-283.   DOI
24 KICT (Korea Institute of Civil Engineering and Building Technology) (2013), Development of Hybrid Substructure Systems for Offshore Wind Power, 1st year research report, MSIP, Korea.
25 Kim, D. J., Choo, Y. W., Lee, J. S., Kim, D. S., Jee, S. H., Choi, J., Lee, M. S., and Park, Y. H. (2013), "Numerical Analysis of Cluster and Monopod Suction Bucket Foundation", Proc. of the ASME 2013 32nd Int. Conf. on Ocean, Offshore and Arctic Eng., Nantes, France.
26 Kim, Y. H., Jeong, S. S., Kim, J. H., and Lee, Y. G. (2007), "Effects of Lateral Pile Rigidity of Offshore Drilled Shafts by Developing p-y Curves in Marine Clay", Journal of Korean Geotechnical Society, Vol.23, No.6, pp.37-51.
27 Anastasopoulos, I. and Theofilou, M. (2015), "On the Development of a Hybrid Foundation for Offshore Wind Turbines", Frontiers in Offshore Geotechnics III, pp.687-704.
28 Lee, S. H., Kim, S. R., Lee, J. H., and Jeong, M. K. (2011), "Evaluation of p-y Curves of Piles in Soft Deposits by 3-Dimensional Numerical Analysis", Journal of Korean Geotechnical Society, Vol.27, No.7, pp.47-57.   DOI
29 Achmus, M., Kou, Y. S., and Abdel-Rahman, K. (2009), "Behavior of Monopile Foundations under Cyclic Lateral Load", Computers and Geotechnics, Vol.36, pp.725-735.   DOI
30 American Petroleum Institute (API) (2011), Geotechnical and Foundation Design Considerations, ANSI/API Recommended Practice 2GEO, 1st ed., Washington, D.C.
31 Arshi, H. S. and Stone, K. J. L. (2012), "Increasing the Lateral Resistance of Offshore Monopole Foundations: Hybrid Monopole-Footing Foundation System", Proc. of the 3rd International Conference on Engineering project and production management, Brighton, pp.217-226.
32 Arshi, H. S., Stone, K. J. L., Vaziri, M., Newson, T., EI-Marasi, M., Taylor, RN., and Goody, R. (2013), "Physical Model Testing of Hybrid Monopole-Footing Foundation System in Sand for Offshore Structures", Proc. of the 19th ICSMGE, Paris, pp.2307-2310.