3D Numerical Modeling of Foundation Solutions for Wind Turbines
Publication: International Journal of Geomechanics
Volume 18, Issue 12
Abstract
With the current tendency to gradually increase the contribution of renewable energy to achieve significant proportions of the entire production, the wind farm construction rate is actually high. Because the location of the wind turbines (WTs) is dictated by factors usually independent of the foundation soil conditions, which are mostly based on energy production and consumption efficiency (e.g., average wind speeds, possibility of connecting to existing electrical networks, approval of authorities and local population, etc.), it is not uncommon for the construction sites to be unfavorable in terms of geotechnical demands. In these circumstances, the choice of the optimal foundation system is an important aspect in the design phase of a WT. The aim of this paper is to analyze, using three-dimensional (3D) numerical models and the suitability of currently available foundation solutions (based on a shallow foundation on the natural or improved ground), and compare the overall behavior with solutions based on rigid inclusions (RIs). The parametric study developed was based on a real soil profile, and all the foundation solutions are analyzed for realistic static WT loads. The assessment of the efficiency of each foundation system, as well as the subsequent comparative analysis, was performed in terms of the surface settlement on the foundation soil and the axial force and bending moment on the vertical reinforcements.
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References
AFNOR (Association française de normalization). 2006. Eoliennes, partie 1: Exigences de conception. NF EN 61400-1. Paris: AFNOR.
Briançon, L., D. Dias, and C. Simone. 2015. “Monitoring and numerical investigation of a rigid inclusions–reinforced industrial building.” Can. Geotech. J. 52 (10): 1592–1604. https://doi.org/10.1139/cgj-2014-0262.
Byrne, B. W., and G. T. Houlsby. 2003. “Foundations for offshore wind turbines.” Philos. Trans. R. Soc. London, Ser. A 361 (1813): 2909–2930. https://doi.org/10.1098/rsta.2003.1286.
Byrne, B. W., and G. T. Houlsby. 2006. “Assessing novel foundation options for offshore wind turbines.” In Proc., World Maritime Technology Conf., 1–10. London: The Institute of Marine Engineering, Science and Technology (IMarEST).
Catana, G., A. A. Savu, and I. Ealangi. 2013. “Modelling methods for soil-structure interaction applied in wind turbine foundation design.” Math. Modell. Civ. Eng. 9 (4): 23–32. https://doi.org/10.2478/mmce-2013-0015.
CFMS (Comité Français de Méchanique des Sols et de Géotechnique). 2011. Working group on wind turbine foundations. Recommendations for the design, calculation, installation and inspection of wind-turbine foundations. Final Version 1.1. Rueil-Malmaision, France: CFMS.
Chen, R. P., Y. M. Chen, J. Han, and Z. Z. Xu. 2008. “A theoretical solution for pile-supported embankments on soft soils under one-dimensional compression.” Can. Geotech. J. 45 (5): 611–623. https://doi.org/10.1139/T08-003.
Ciopec, A., M. Mirea, C. Voicu, and C. Costescu. 2013. “Alternative energy resources: Foundation solution for wind turbines.” Constanta Maritime Univ. Ann. 13: 150–153.
Croce, A. 2011. “Analisi dati di monitoraggio del rivestimento della galleria del passante ferroviario di Bologna.” [In Italian.] Degree dissertation, Polytechnics of Turin.
Deb, K. 2010. “A mathematical model to study the soil arching effect in stone column-supported embankment resting on soft foundation soil.” Appl. Math. Modell. 34 (12): 3871–3883. https://doi.org/10.1016/j.apm.2010.03.026.
Deb, K., and S. R. Mohapatra. 2013. “Analysis of stone column-supported geosynthetic-reinforced embankments.” Appl. Math. Modell. 37 (5): 2943–2960. https://doi.org/10.1016/j.apm.2012.07.002.
Dias, D., and B. Simon. 2015. “Spread foundations on rigid inclusions subjected to complex loading: Comparison of 3D numerical and simplified analytical modelling.” Am. J. Appl. Sci. 12 (8): 533–541. https://doi.org/10.3844/ajassp.2015.533.541.
Do, N. A., D. Dias, P. Oreste, and I. Djeran-Maigre. 2013. “3D modelling for mechanized tunnelling in soft ground-influence of the constitutive model.” Am. J. Appl. Sci. 10 (8): 863–875. https://doi.org/10.3844/ajassp.2013.863.875.
Filz, G., J. Sloan, M. McGuire, J. Collin, and M. Smith. 2012. “Column-supported embankments: Settlement and load transfer.” In GeoCongress 2012: State of the art and practice in geotechnical engineering, Geotechnical Special Publication 225, edited by R. D. Hryciw, A. Athanasopoulos-Zekkos, and N. Yesiller, 54–77. Reston, VA: ASCE.
Fioravante, V. 2011. “Load transfer from a raft to a pile with an interposed layer.” Géotechnique 61 (2): 121–132. https://doi.org/10.1680/geot.7.00187.
FitzPatrick, B., R. Gernant, and J. Micelli. 2009. “Design and construction of intermediate foundation solutions for wind turbines.” In Contemporary topics in deep foundations, Geotechnical Special Publication 185, edited by M. Iskander, D. F. Laefer, and M. H. Hussein, 504–511. Reston, VA: ASCE.
Girout, R., M. Blanc, D. Dias, and L. Thorel. 2014. “Numerical analysis of a geosynthetic-reinforced piled load transfer platform–Validation on centrifuge tests.” Geotext. Geomembr. 42 (5): 525–539. https://doi.org/10.1016/j.geotexmem.2014.07.012.
Han, J., and M. Gabr. 2002. “Numerical analysis of geosynthetic reinforced and pile-supported earth platforms over soft soil.” J. Geotech. Geoenviron. Eng. 128 (1): 44–53. https://doi.org/10.1061/(ASCE)1090-0241(2002)128:1(44).
Hassen, G., D. Dias, and P. De Buhan. 2009. “A multiphase constitutive model for the design of piled-embankments. Comparison with three-dimensional numerical simulations.” Int. J. Geomech. 9 (6): 258–266. https://doi.org/10.1061/(ASCE)1532-3641(2009)9:6(258).
Hewlett, W. J., and M. F. Randolph. 1988. “Analysis of piled embankments.” Ground Eng. 21 (3): 12–18.
Huang, J., and J. Han. 2010. “Two-dimensional parametric study of geosynthetic-reinforced column-supported embankments by coupled hydraulic and mechanical modeling.” Comput. Geotech. 37 (5): 638–648. https://doi.org/10.1016/j.compgeo.2010.04.002.
Itasca Consulting Group. 2009. FLAC (fast Lagrangian analysis of continua), version 4.0. User’s manual. Minneapolis: Itasca Consulting Group.
Jenck, O., D. Dias, and R. Kastner. 2005. “Soft ground improvement by vertical rigid piles-two-dimensional physical modelling and comparison with current design methods.” Soils Found. 45 (6): 15–31. https://doi.org/10.3208/sandf.45.15.
Jenck, O., D. Dias, and R. Kastner. 2006. “Three-dimensional modelling of an embankment over soft soil improved by rigid piles.” In Numerical methods in geotechnical engineering, edited by H. F. Schweiger, 817–822. London: Taylor & Francis.
Jenck, O., D. Dias, and R. Kastner. 2007. “Two-dimensional physical and numerical modeling of a pile supported earth platform over soft soil.” J. Geotech. Geoenviron. Eng. 133 (3): 295–305. https://doi.org/10.1061/(ASCE)1090-0241(2007)133:3(295).
Jenck, O., D. Dias, and R. Kastner. 2009a. “Discrete element modelling of a granular platform supported by piles in soft soil–Validation on a small scale model test and comparison to a numerical analysis in a continuum.” Comput. Geotech. 36 (6): 917–927. https://doi.org/10.1016/j.compgeo.2009.02.001.
Jenck, O., D. Dias, and R. Kastner. 2009b. “Three-dimensional numerical modeling of a pile embankment.” Int. J. Geomech. 9 (3): 102–112. https://doi.org/10.1061/(ASCE)1532-3641(2009)9:3(102).
Jennings, K., and P. J. Naughton. 2012. “Similitude conditions modeling geosynthetic-reinforced piled embankments using FEM and FDM techniques.” ISRN Civ. Eng. 2012: 1–16. https://doi.org/10.5402/2012/251726.
Lang, R., R. Liu, J. Lian, and H. Ding. 2015. “Study on load-bearing characteristics of different types of pile group foundations for an offshore wind turbine.” J. Coastal Res. 73: 533–541. https://doi.org/10.2112/SI73-093.1.
Liu, H., W. Charles, and K. Fei. 2007. “Performance of a geogrid-reinforced and pile-supported highway embankment over soft clay: Case study.” J. Geotech. Geoenviron. Eng. 133 (12): 1483–1493. https://doi.org/10.1061/(ASCE)1090-0241(2007)133:12(1483).
Low, B., S. Tang, and V. Choa. 1994. “Arching in piled embankments.” J. Geotech. Eng. 120 (11): 1917–1938. https://doi.org/10.1061/(ASCE)0733-9410(1994)120:11(1917).
Matutano, C., V. Negro, J. S. López-Gutiérrez, M. D. Esteban, and A. Hernández. 2014. “The effect of scour protections in offshore wind farms.” J. Coastal Res. 70: 12–17. https://doi.org/10.2112/SI70-003.1.
Messioud, S., U. S. Okyay, B. Sbartai, and D. Dias. 2016a. “Dynamic response of pile reinforced soils and piled foundations.” Geotech. Geol. Eng. 34 (3): 789–805. https://doi.org/10.1007/s10706-016-0003-0.
Messioud, S., B. Sbartai, and D. Dias. 2016b. “Estimation of dynamic impedance of the soil–pile–slab and soil–pile–mattress–slab systems.” Int. J. Struct. Stab. Dyn. 17 (6): 1750057. https://doi.org/10.1142/S0219455417500572.
Mirza, S. A., and W. Brant. 2009. “Footing design.” Chap. 5 in ACI design handbook, edited by M. Saatcioglu, 189–204. Farmington Hills, MI: ACI.
Nguyen, D. D. C., S. Jo, and D. S. Kim. 2013. “Design method of piled-raft foundations under vertical load considering interaction effects.” Comput. Geotech. 47 (Jan): 16–27. https://doi.org/10.1016/j.compgeo.2012.06.007.
Nunez, M. A., L. Briançon, and D. Dias. 2013. “Analyses of a pile-supported embankment over soft clay: Full-scale experiment, analytical and numerical approaches.” Eng. Geol. 153 (Feb): 53–67. https://doi.org/10.1016/j.enggeo.2012.11.006.
Okyay, U. S., and D. Dias. 2010. “Use of lime and cement treated soils as pile supported load transfer platform.” Eng. Geol. 114 (1–2): 34–44. https://doi.org/10.1016/j.enggeo.2010.03.008.
Okyay, U., D. Dias, L. Thorel, and G. Rault. 2014. “Centrifuge modeling of a pile-supported granular earth-platform.” J. Geotech. Geoenviron. Eng. 140 (2): 04013015. https://doi.org/10.1061/(ASCE)GT.1943-5606.0001004.
Okyay, U. S., D. Dias, P. Billion, D. Vandeputte, and A. Courtois. 2012. “Impedance functions of slab foundations with rigid piles.” Geotech. Geol. Eng. 30 (4): 1013–1024. https://doi.org/10.1007/s10706-012-9523-4.
Roscoe, K. H., and J. B. Burland. 1968. “On the generalised stress-strain behaviour of ‘wet’ clay.” In Engineering plasticity, edited by J. Heyman and F. A. Lecke, 535–609. Cambridge, UK: Cambridge University Press.
Soldo, B., K. Ivandic, and H. Babic. 2005. “Experimental study and design analysis of piles in clay.” Electron. J. Geotech. Eng. 10 (4): 16–20. https://doi.org/10.1080/19386362.2016.1150006.
Stewart, M., and G. Filz. 2005. “Influence of clay compressibility on geosynthetic loads in bridging layers for column-supported embankment.” In Contemporary issues in foundation engineering, Geotechnical Special Publication 131, edited by J. B. Anderson, K. K. Phoon, E. Smith, and J. E. Loehr, 1–14. Reston, VA: ASCE.
Wood, D. M. 1990. Soil behaviour and critical state soil mechanics. Cambridge, UK: Cambridge University Press.
Zhang, J., J. J. Zheng, B. G. Chen, and J. H. Yin. 2013. “Coupled mechanical and hydraulic modeling of a geosynthetic reinforced and pile-supported embankment.” Comput. Geotech. 52 (Jul): 28–37. https://doi.org/10.1016/j.compgeo.2013.03.003.
Zhang, L., M. Zhao, Y. Hu, H. Zhao, and B. Chen. 2012. “Semi-analytical solutions for geosynthetic-reinforced and pile-supported embankment.” Comput. Geotech. 44 (Jun): 167–175. https://doi.org/10.1016/j.compgeo.2012.04.001.
Zhuang, Y., and K. Wang. 2016. “Finite-element analysis on the effect of subsoil in reinforced piled embankments and comparison with theoretical method predictions.” Int. J. Geomech. 16 (5): 04016011. https://doi.org/10.1061/(ASCE)GM.1943-5622.0000628.
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© 2018 American Society of Civil Engineers.
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Received: Nov 7, 2017
Accepted: Jun 11, 2018
Published online: Sep 21, 2018
Published in print: Dec 1, 2018
Discussion open until: Feb 21, 2019
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