Design and modelling of raft foundations and selecting the value of coefficient of vertical subgrade reaction are still actively discussed topics in geotechnical and structural engineering. In everyday practice, soil–structure interaction is mostly taken into account by using the theory of ‘beam on elastic foundation’, in which the soil is substituted by a certain set of coefficients of subgrade reaction. In this study, finite element analysis of a building was performed using a geotechnical software (Plaxis 3D), which is capable of modelling the subsoil as a continuum, and a structural software (Axis VM), which uses the concept of ‘beam on elastic foundation’. The evaluation of the results and recommendations for everyday engineering practice are introduced in this paper.
If the inline PDF is not rendering correctly, you can download the PDF file here.
 Terzaghi K. (1955): Evaluation of coefficients of subgrade reaction. Geotechnique 5 297–326.
 Vesić A. (1961): Beams on elastic subgrade and the Winkler’s hypothesis. Proceedings of 5th International Conference on Soil Mechanics and Foundation Engineering Vol. 1 pp. 845–850.
 Timoshenko S. Goodier J.N. (1970): Theory of Elasticity 3rd edition. McGraw and Hill New York.
 Bowles J.E. (2001): Foundation Analysis and Design. McGraw-Hill New Jersey.
 Larkela A. Mengelt M. Stapelfeldt T. (2013): Determination of distribution of modulus of subgrade reaction. Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering Paris.
 Mayne P.W. Poulos H.G. (1999): Approximate displacement influence factors for elastic shallow foundations. Journal of Geotechnical and Geoenvironmental Engineering ASCE 125(6) 453–460.
 Abdullah W.S. (2008): New elastoplastic method for calculating the contact pressure distribution under rigid foundations. Jordan Journal of Civil Engineering 2 (1).
 Horvath J.S. Colasanti R.J. (2011): Practical subgrade model for improved soil-structure interaction analysis: model development. International Journal of Geomechanics ASCE 11(1) 59–64.
 Jagodnik V. Jelenic G. Arbanas Z. (2013): On the application of a mixed finite-element approach to beam-soil interaction. Acta Geotechnica Slovenica 10(2) 15–27.
 Mayne P.W. (2005): Unexpected but foreseeable mat settlements on Piedmont residuum. International Journal of Geoengineering Case Histories 1(1) 5–17.
 Móczár B. Szendefy J. (2013): Calculation of presumed bearing capacity of shallow foundations according to the principles of Eurocode 7 (in Hungarian). Vasbetonépítés 2013(1) 20–26.
 Brinkgreve R.B.J. Swolfs W.M. (ed.) (2007): PLAXIS 3D Foundation Version 2 Manual PLAXIS BV Delft Netherlands.
 Van Langen H. (1991): Numerical Analysis of Soil-Structure Interaction. PhD dissertation Delft University of Technology Delft Netherlands.
 Egorov K.E. Malikova T.A. (1975): Settlement of foundation slabs on compressible base. Proceedings of 5th Asian Regional Conference on Soil Mechanics and Foundation Engineering Bangalore Vol. 1 pp. 187–190.
 Széchy K. Varga L. (1971): Foundations – Volume 1 (in Hungarian). Műszaki Könyvkiadó Budapest.
 Dulácska E. Fekete S. Varga L. (1982): Interaction of Sub Soil and Building (in Hungarian). Akadémiai Kiadó Budapest.
 Axis VM 12: User’s Manual Inter-CAD Kft [online]. Available on: http://axisvm.hu/axisvm_download_training_materials.html
 Farkas J. (1995): Foundation Engineering (in Hungarian). Műszaki Könyvkiadó Budapest.
 Lopes F.R. (2000): Design of raft foundations on Winkler springs In: Hemsley J.A. (ed.): Design applications of raft foundations Thomas Telford Ltd. London U.K pp. 127–154.