Numerical investigations of pile load distribution in pile group foundation subjected to vertical load and large moment

• Journal title : Geomechanics and Engineering
• Volume 10, Issue 5,  2016, pp.577-598
• Publisher : Techno-Press
• DOI : 10.12989/gae.2016.10.5.577
Title & Authors
Numerical investigations of pile load distribution in pile group foundation subjected to vertical load and large moment
Ukritchon, Boonchai; Faustino, Janine Correa; Keawsawasvong, Suraparb;
Abstract
This paper presents a numerical study of pile force distribution in a pile group foundation subjected to vertical load and large moment. The physical modeling of a pile foundation for a wind turbine is analyzed using 3D finite element software, PLAXIS 3D. The soil profile consists of several clay layers, which are modeled as Mohr-Coulomb material in an undrained condition. The piles in the pile group foundation are modeled as special elements called embedded pile elements. To model the problem of a pile group foundation, a small gap is created between the pile cap and underlying soil. The pile cap is modeled as a rigid plate element connected to each pile by a hinge. As a result, applied vertical load and large moment are transferred only to piles without any load sharing to underlying soil. Results of the study focus on pile load distribution for the square shape of a pile group foundation. Mathematical expression is proposed to describe pile force distribution for the cases of vertical load and large moment and purely vertical load.
Keywords
numerical analysis;finite element;pile group foundation;pile load distribution;biquartic interpolation;
Language
English
Cited by
1.
3D FEM Analysis of a Pile-Supported Riverine Platform under Environmental Loads Incorporating Soil-Pile Interaction, Computation, 2018, 6, 1, 8
References
1.
Bathe, K.J. (1996), Finite Element Procedures, Prentice-Hall, New Jersey, USA.

2.
Bowles, J.E. (1988), Foundation Analysis and Design, McGraw-Hill, Singapore.

3.
Brinkgreve, R.B.J., Engin, E. and Swolfs, M.W. (2013), Plaxis 3D 2013 Manual, A.A. Balkema Publishers, The Netherlands.

4.
Chore, H.S. (2014), "Interactive analysis of a building fame resting on pile foundation", Coupled Syst. Mech., Int. J., 3(4), 367-384.

5.
Chore, H.S. and Siddiqui, M.J. (2013), "Analysis of the piled raft for three load patterns: A parametric study", Coupled Syst. Mech., Int. J., 2(3), 289-302.

6.
Chore, H.S., Ingle, R.K. and Sawant, V.A. (2012), "Parametric study of laterally loaded pile groups using simplified F.E. models", Coupled Syst. Mech., Int. J., 1(1), 1-7.

7.
Chore, H.S., Ingle, R.K. and Sawant, V.A. (2014), "Non linear soil structure interaction of space frame pile foundation-soil system", Struct. Eng. Mech., Int. J., 49(1), 95-110.

8.
Choudhury, D., Shen, R.F. and Leung, C.F. (2008), "Centrifuge model study of pile group subject to Adjacent excavation", Proceedings of GeoCongress 2008, New Orleans, LA, USA, pp. 141-148.

9.
Comodromos, E.M., Anagnostopoulos, C.T. and Georgiadis, M.K. (2003), "Numerical assessment of axial pile group response based on load test", Comput. Geotech., 30(6), 505-515.

10.
Comodromos, E.M., Papadopoulou, M.C. and Rentzeperis, I.K., (2009), "Pile foundation analysis and design using experimental data and 3-D numerical analysis", Comput. Geotech., 36(5), 819-836.

11.
Dao, T.P.T. (2011), Validation of PLAXIS Embedded Piles For Lateral Loading, Master of Science Thesis; Delft University of Technology, The Netherlands.

12.
Das, B.M. (2014), Principle of Foundation Engineering, (8th Ed.), Cengage Learning, Boston, MA, USA.

13.
Dode, P.A., Chore, H.S. and Agrawal, D.K. (2014), "Interaction analysis of a building frame supported on pile groups", Coupled Syst. Mech., Int. J., 3(3), 305-318.

14.
Doran, B. and Seckin, A. (2014), "Soil-pile interaction effects in wharf structures under lateral loads", Struct. Eng. Mech., Int. J., 51(2), 267-276.

15.
Duncan, M.J. and Buchignani, A.L. (1976), An Engineering Manual for Settlement Studies, University of California, Berkeley, CA, USA.

16.
Engin, H.K. and Brinkgreve, R.B.J. (2009), "Investigation of Pile Behaviour Using Embedded Piles", Proceedings of the 17th International Symposium on Numerical Models in Geotechnical Engineering, Alexandria, Egypt, October.

17.
Engin, H.K., Septanika, E.G. and Brinkgreve, R.B.J. (2007), "Improved embedded beam elements for the modelling of piles, Proceedings of the 10th International Symposium on Numerical Models in Geotechnical Engineering, Rhodes, Greece, April.

18.
Engin, H.K., Septanika, E.G., Brinkgreve, R.B.J. and Bonnier, P.G. (2008a), "Modeling piled foundation by means of embedded piles", Proceedings of the 2nd International Workshop on Geotechnics of Soft Soils - Focus on Ground Improvement, University of Strathclyde, Glasgow, Scotland, September.

19.
Engin, H.K., Septanika, E.G. and Brinkgreve, R.B.J. (2008b), "Estimation of pile group behavior using embedded piles", Proceedings of the 12th International Conference of International Association for Computer Methods and Advances in Geomechanics (IACMAG), Goa, India, October, pp. 3231-3238.

20.
Fattah, M.Y., Yousif, M.A. and AlTameemi, S.M.K. (2015), "Effect of pile group geometry on bearing capacity of piled raft foundations", Struct. Eng. Mech., Int. J., 54(5), 829-853.

21.
Lebeau, J.S. (2008), "FE-analysis of piled and piled raft foundations", Ph.D. Thesis; Graz University of Technology, Austria.

22.
Mandolini, A., Russo, G. and Viggiani, C. (2005), "Pile foundations: experimental investigations, analysis and design", Proceedings of the XVI International Conference on Soil Mechanics and Geotechnical Engineering, Osaka, Japan, September, pp. 177-213.

23.
Sauer, T. (2014), Numerical Analysis, Pearson Education Limited, UK.

24.
Sawant, V.A. and Ladhane, K.B. (2012), "Dynamic response of pile groups in series and parallel configuration", Struct. Eng. Mech., Int. J., 41(3), 395-406.

25.
Sawant, V.A. and Shukla, S.K. (2012), "Can finite element and closed-form solutions for laterally loaded piles be identical?", Struct. Eng. Mech., Int. J., 43(2), 239-251.

26.
Takashi, S. and Junho, S. (2001), "Interpolation of one- and two-dimensional images with pixelwise photon number conservation", Astronom. Soc. Japan, 53, 361-380.

27.
Walpole, R.E., Myers, R.H., Myers, S.L. and Ye, K. (2002), Probability & Statistics for Engineering and Scientists, (7th Ed.), Prentice Hall, NJ, USA.

28.
Wu, Y., Liu, J. and Chen, R. (2015), "An analytical analysis of a single axially-loaded pile using a nonlinear softening model", Geomech. Eng., Int. J., 8(6), 769-781.

29.
Zienkiewicz, O.C. (1977), The Finite Element Method, McGraw-Hill, USA.