Settlement of Thick Clay Deposits under Piled-Raft Foundation and Design Considerations (Pile Dimensions)


  • Lee Kwang Yeol Department of Civil Engineering, Dongseo University, Busan, KOREA



Thick deltaic deposits, settlement, piled-raft, light-weight foundation, width ratio


Characteristics and histories of the deltaic deposits in geotechnical perspective are studied. Geotechnical issues of clay deposits under floating foundation systems also analyzed. Theoretical expressions and parameters were examined by an experimental study and numerical analysis on the laboratory scales and field measurement in this study. Also, piled raft foundation on thick clay deposits is designated to optimize pile configuration. The predictions of settlements of piled rafts foundation are proposed based on pile dimensions by utilizing a normalized Ap/nL and Bg/Br. Practical design of piled raft foundations is made for the light bridges and five story buildings on thick clay deposits to discuss the long-term settlement, and it is found that the piled raft is well applicable and effective on thick clay deposits, and that differential settlements of the foundation should be managed by designing the configuration of pile lengths and spacing.


Ahner, C., Soukhov, D., and Konig, G., Reliability Aspect Design of Combined Piled-Raft Foundation (CPRF), 2nd International PhD Symposium in Civil Engineering, Budapest, 1998.

Reul, O. and Randolph, M.F., Design Strategies for Piled Rafts Subjected to Nonuniform Vertical Loading, Journal of Geotechnical and Geoen-vironmental Engineering, 130(1), ASCE, 2004, pp. 1-13.

Reul, O., Numerical Study of the Bearing Behavior of Piled Rafts, International Journal of Geomechanics, 4(2), ASCE, 2004, pp. 59-68.

Poulos, H.G., Piled Raft Foundations: Design and Application, Geotechnique, 51, 2001, pp. 95-113.

Poulos, H.G. and Davis, E.H., Pile Foundation Analysis and Design, John Wiley & Sons, New York, 1980, pp. 250-264.

Harr, M.E., Foundations of Theoretical Soil Mechanics, McGraw-Hill Incorporated, New York, 1966.

Fleming, W.G.K., Weltman, A.J., Randolph, M. F., and Elson, W.K., Piling Engineering 2nd Edition, Surrey University Press, London, 1992, p. 390.

Randolph, M.F. and Wroth, C.P., Analysis of Deformation of Vertically Loaded Piles, Journal of the Geotechnical Engineering Division, 104(12), 1978, pp. 1465-1488.

Foundation Design and Construction – Geo Publication No. 1, Geotechnical Engineering Office, Civil Engineering and Development Department, Hong Kong, 2006.

Clancy, P. and Randolph, M.F., An Approximate Analysis Procedure for Piled Raft Foundations, International Journal for Numerical and Analytical methods in Geomechanics, 17(12), 1993, pp. 849-869.

Shen, W.Y., Chow, Y.K., and Lee, K.Y., Practical Method for Settlement Analysis of Pile Groups, Journal of Geotechnical and Geoenvironmental Engineering, 126(10), ASCE, 2000, pp. 890-897.

Shen, W.Y. and Teh, C.I., Practical Solution for Group Stiffness Analysis of Piles, Journal of Geotechnical and Geoenvironmental Engineering, 128(8), ASCE, 2002, pp. 692-698.

Shen, W.Y., Chow, Y.K., and Yong, K.Y., A Variational Approach for Vertical Deformation Analysis of Pile Group, International Journal for Numerical and Analytical Methods in Geomecha-nics, 21(11), 1997, pp. 741-752.

Randolph, M.F. and Clancy, P., Design and Performance of a Piled Raft Foundation, in Vertical and Horizontal Deformations of Foundations and Embankments, American Society of Civil Engineers, 1994, pp. 314-321.

Brown, P.T., The Significance of Structure-Foundations Interaction, The Second Australia-New Zealand Conference in Geomechanics, Brisbane, Australia, 1975, pp. 79-82.

Tan, Y.C. and Chow, C.M., Design of Piled Raft Foundation on Soft Ground, GSM-IEM Forum, 2004.

Liew, S.S., Gue, S.S., and Tan, Y.C., Design and Instrumentation Results of A Reinforcement Concrete Piled Raft Supporting 2500 Ton Oil Storage Tank on Very Soft Alluvium Deposits, 9th International Conference on Piling and Deep Foundations, Nice, 2002

Prakoso, W.A. and Kulhawy, F.H., Contribution to Piled Raft Foundation Design. Journal of Geo-technical and Geo-environmental Engineering,. 127(1), ASCE, 2001, pp. 17-24.




How to Cite

Kwang Yeol, L. (2015). Settlement of Thick Clay Deposits under Piled-Raft Foundation and Design Considerations (Pile Dimensions). Civil Engineering Dimension, 17(3), 166-178.