Browse > Article
http://dx.doi.org/10.12989/csm.2012.1.2.115

Parametric study of piled raft for three load-patterns  

Sawant, V.A. (Indian Institute of Technology Roorkee)
Pawar, S.V. (Indian Institute of Technology Roorkee)
Ladhane, K.B. (Indian Institute of Technology Roorkee)
Publication Information
Coupled systems mechanics / v.1, no.2, 2012 , pp. 115-131 More about this Journal
Abstract
Paper presents an improved solution algorithm based on Finite Element Method to analyse piled raft foundation. Piles are modelled as beam elements with soil springs. Finite element analysis of raft is based on the classical theory of thick plates resting on Winkler foundation that accounts for the transverse shear deformation of the plate. Four node, isoparametric rectangular elements with three degrees of freedom per node are considered in the development of finite element formulation. Independent bilinear shape functions are assumed for displacement and rotational degrees of freedom. Effect of raft thickness, soil modulus and load pattern on the response is considered. Significant improvement in the settlements and moments in the raft is observed.
Keywords
pile; raft; thick plate; winkler foundation; load pattern;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Sonoda, R. Matsumoto, T. Kitiyodom, P. Moritaka, H. and Ono, T. (2009), "Case study of a piled raft foundation constructed using a reverse construction method and its post-analysis", Can. Geotech. J., 46(2), 142-159.   DOI   ScienceOn
2 Timoshenko, S.P. and Krieger, S.W. (1959), Theory of plates and shells, McGraw Hill International Editions.
3 Wiesner, T.J. (1991), Various applications of piled raft analysis, Computer Methods and Advances in Geomechanics, Beer, (Eds. Booker and Carter).
4 Yamashita, K., Kakurai, M. and Yamada, T. (1994), "Investigation of a piled raft foundation on stiff clay", Proceedings of the 8the International Conference on Soil Mechanics and Foundation Engineering, New Delhi, India.
5 Young-Kyo Seo, Ho-Jin Lee, Tae-Hyung Kim(2006), "Numerical analysis of piled-raft foundation considering sand cushion effects", Proceedings of the 16 th(2006) International Offshore and Polar Engineering Conference San Francisco, California, USA, May 28-June 2.
6 Zienkiewicz, O.C. (1968), The finite element method in structural & continuum mechanics, McGraw Hill, London.
7 Mendonca, A.V. and de Paiva, J.B. (2000), "A boundary element method for the static analysis of raft foundations on piles", Eng. Anal. Bound. Elem., 24(3), 237-247.   DOI   ScienceOn
8 Mendonca, A.V. and de Paiva, J.B. (2003), "An elastostatic FEM/BEM analysis of vertically loaded raft and piled raft foundation", Eng. Anal. Bound. Elem., 27(9), 919-933.   DOI   ScienceOn
9 Noorzaei J., Viladkar M.N. and Godbole P.N. (1991), "Soil-structure interaction of space frame-raft-soil system: A parametric study", Comput. Struct,, 40(5), 1235-1247.   DOI   ScienceOn
10 Kitiyodom, P., Matsumoto, T. and Sonoda, R. (2009), A post-analysis of a large piled raft foundation constructed using reverse construction method, Deep Foundations on Bored and Auger Piles, (Eds.Van Impe and Van Impe) ${\copyright}$ 2009 Taylor & Francis Group, London, ISBN 978-0-415-47556-3, 127-133.
11 Poulos, H.G. (1993), "Piled raft in swelling or consolidating soils', J. Geotech. Eng - ASCE., 119(2), 374-380.   DOI
12 Poulos, H.G. (2001), "Piled raft foundations - design and applications", Geotechnique, 50(2), 95-113.
13 Prakoso, W.A. and Kulhawy, F.H. (2001), "Contribution to piled raft foundation design", J. Geotech. Geoenviron., 127(1).
14 Rabiei, M. (2009), "Parametric study for piled raft foundations", Electronic J.Geotech. Eng., 14.
15 Reul, O. and Randolph, M.F. (2003), "Piled rafts in overconsolidated clay: comparison of in situ measurements and numerical analyses", Geotechnique, 53(3), 301-315.   DOI   ScienceOn
16 Reul, O. and Randolph, M.F. (2004), "Design strategies for piled rafts subjected to non-uniform vertical loading", J. Geotech. Geoenviron., 130(1), 1-13.   DOI   ScienceOn
17 Smith, I.M. and Wang, A. (1998), "Analysis of piled rafts", Int. J. Numer.Anal. Met., 22(10), 777-790.   DOI   ScienceOn
18 Cunha, R.P., Poulos, H.G. and Small, J.C. (2001), "Investigation of design alternatives for a piled raft case history", J. Geotech. Geoenviron., 127(8), 635-641.   DOI   ScienceOn
19 de Sanctis, L. and Russo, G. (2008), "Analysis and performance of piled rafts designed using innovative criteria", J. Geotech. Geoenviron., 134(8), 1118-1128.   DOI   ScienceOn
20 Franke, E. (1991), Measurements beneath piled rafts, Keynote Lecture to the ENPC-Conference on DeepFoundations, Paris.
21 Gandhi and Maharaj (1996), "Analysis of piled raft foundation", Proceedings of the 6th International Conference on Piling and Deep Foundations, Bombay, India.
22 Hasen, G., and de Buhan, P. (2005), "Fine element elastoplastic analysis of a piled raft foundation based on the use of a multiphase model", Proceedings of the 8th International Conference on Computational Plasticity COMPLAS VIII, Barcelona.
23 Hooper, J.A. (1973), "Observations on the behavior of a piled raft foundation in London clay", Proceedings of the Institution of Civil Engineers., 55(2), 855-877.   DOI
24 Kakurai, M., Yamashita, K. and Tomono, M. (1987), "Settlement behaviour of piled raft foundation on soft ground" , Proceedings of the 8 th Asian Regional Conference on Soil Mechanics and Foundation Engineering, Kyoto, Japan.
25 Kuwabara, F. (1989), "An elastic analysis for piled raft foundations in a homogeneous soil", Soil. Found., 29(1), 82-92.   DOI
26 Maharaj, D.K. (2003), "Load-settlement behavior of piled raft foundation by three-dimensional nonlinear finite element analysis", Electronic J.Geotech. Eng.
27 Maharaj, D.K. and Gandhi, S.R. (2004), "Non-linear finite element analysis of piled raft foundations", Proceedings of the. Instn. Civil Engineers, Geotechnical Engineering.
28 Clancy, P. and Randolph, M.F. (1993), "An approximate analysis procedure for piled aft foundations", Int. J. Numer. Anal. Met., 17(2), 849-869.   DOI