An Evaluation of Pile-Raft Interaction in Cohesive Soils using 3D Finite Element Method

Authors

  • Endra Susila Department of Civil Engineering, Faculty of Civil and Environmental Engineering, Institut Teknologi Bandung, Jalan Ganesha No. 10, Bandung 40132
  • Muhammad Yoke Syahputra Department of Civil Engineering, Faculty of Civil and Environmental Engineering, Institut Teknologi Bandung, Jalan Ganesha No. 10, Bandung 40132
  • Andhika Sahadewa Department of Civil Engineering, Faculty of Civil and Environmental Engineering, Institut Teknologi Bandung, Jalan Ganesha No. 10, Bandung 40132
  • Karina Meilawati Eka Putri Department of Civil Engineering, Faculty of Civil and Environmental Engineering, Institut Teknologi Bandung, Jalan Ganesha No. 10, Bandung 40132

DOI:

https://doi.org/10.5614/j.eng.technol.sci.2019.51.5.5

Keywords:

ABAQUS, foundation, hard clay, load transfer mechanism, pile, raft, settlement, very stiff clay

Abstract

This paper presents the results of a numerical study of soil-structure interaction in a piled-raft foundation system in clay soil by reviewing the deformation and load transfer mechanism of the piled-raft foundation system. ABAQUS was used to evaluate the interaction in the system, while a Mohr-Coulomb constitutive model was chosen to model the clay soil. Verification of the model was conducted by comparing the simulation result to an experimental laboratory result. The verification result showed that the model used in this research agreed well with the experimental laboratory research. Subsequently, a parametric study was performed by varying the pile spacing, raft size, pile length, and raft thickness. A parametric study was conducted on very stiff and hard clays. This study concludes that the load transfer mechanism in a piled-raft foundation system between the pile and raft foundation occurs after the pile reaches its ultimate capacity and is in the plastic zone.

Downloads

Download data is not yet available.

Author Biographies

Muhammad Yoke Syahputra, Department of Civil Engineering, Faculty of Civil and Environmental Engineering, Institut Teknologi Bandung, Jalan Ganesha No. 10, Bandung 40132

Department of Civil Engineering

Andhika Sahadewa, Department of Civil Engineering, Faculty of Civil and Environmental Engineering, Institut Teknologi Bandung, Jalan Ganesha No. 10, Bandung 40132

Department of Civil Engineering

Karina Meilawati Eka Putri, Department of Civil Engineering, Faculty of Civil and Environmental Engineering, Institut Teknologi Bandung, Jalan Ganesha No. 10, Bandung 40132

Department of Civil Engineering

References

Burland, J.B., Piles as Settlement Reducers, Invited Lecture, XIX Convegno Italiano di Geotecnica, 2, pp. 21-34, 1995.

Sanctis, L. de, Mandolini, A., Russo, G. & Viggiani, C., Some Remarks on the Optimum Design of Piled Rafts. In International Deep Foundations Congress in 2002: An International Perspective on Theory, Design, Construction, and Performance, pp. 405-425, 2002.

Poulos, H.G., Practical Design Procedures for Piled Raft Foundations, Design Applications of Raft Foundations, Published by J.A. Hemsley, 2000.

Poulos, H.G., Piled-raft Foundation: Design and Applications. Geotechnique, 15(10), pp. 847-875, 2001.

Sanctis, L. de & Russo, G., Analysis and Performance of Piled Rafts Designed Using Innovative Criteria, Journal of Geotechnical and Geoenvironmental Engineering, 134(8), pp. 1118-1128, 2008.

Basile, F., A Practical Method for the Non-linear Analysis of Piled Rafts, Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, pp. 2675-2678, 2013.

Luo, R., Yang, M. & Li, W., Normalized Settlement of Piled Raft in Homogeneous Clay, Computers and Geotechnics, 103, pp. 165-178, 2018.

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

Basile, F., Non-linear Analysis of Pile Groups, Proceedings of the Institution of Civil Engineers-Geotechnical Engineering, 137(2), pp. 105, 1999.

Kitiyodom, P. & Matsumoto, T., A Simplified Analysis Method for Piled Raft and Pile Group Foundations with Batter Piles, International Journal for Numerical and Analytical Methods in Geomechanics, 26(13), pp. 1349-1369, 2002.

Basile, F., Non-linear Analysis of Vertically Loaded Piled Rafts, Computers and Geotechnics, 63, pp. 73-82, 2015.

Mali, S. & Singh, B., Behavior of Large Piled-raft Foundation on Clays Soil, Ocean Engineering, 149, pp. 205- 216, 2018.

Stacul, S. & Squeglia, N., Analysis Method for Laterally Loaded Pile Groups Using and Advanced Modeling of Reinforced Concrete Sections, Materials, 11(300), pp. 1- 22, 2018.

Susila, E. & Anggraini, N., Soil-Structure Interaction of a Piled Raft Foundation in Clay - A 3D Numerical Study, Journal of Engineering and Technological Sciences, 48(4), pp. 388-407, 2016.

Roesyanto, A Study of Mechanism of Load Transfer on the Raft Foundation System with the Elasto-plastic Soil Model, Doctoral Dissertation, Department of Civil Engineering, Bandung Institute of Technology, Bandung, Indonesia, 2003.

ABAQUS Inc., ABAQUS Analysis User's Manual, ABAQUS Inc., 2019.

Sinha, A. & Hanna, A.M., 3D Numerical Model for Piled Raft Foundation, International Journal of Geomechanics, ASCE, 17(2), p.04016055, 2016.

Look, B., Handbook of Geotechnical Investigation and Design Table. Taylor & Francis Group, London, UK, 2007.

Jamiolkowski, M., Lancellota, R., Marchetti, S., Nova, R. & Pasqualini, E., Design Parameters for Clays State of the art Report, 7th European Conf. Soil Mechanics, Brighton, 1979.

Downloads

Published

2019-10-31

Issue

Section

Articles