Comparison of linear and non-linear, space frame-raft-soil interaction analyses, by using finite element method

H. M.Rajashekhar Swamy, Krishnamoorthy, D. L. Prabakhara, S. S. Bhavikatti

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The objective of the present study is to estimate the realistic displacements and force quantities in the structural members, accounting for their three dimensional behaviour and non-linear constitutive relations of soil. This demands usage of proper constitutive model for soil and its numerical model, which is validated experimentally. A program has been developed in the present work to compare soil-structure interaction analyses of a three dimensional frame resting on mat foundation for linear and non-linear constitutive relations of soil. For linear analysis initial tangent modulus is used. For non-linear analysis hypoelasticity model is adopted. This hypoelastic model, used, is validated for a plate load test. Results of non-linear analysis are compared with non-interactive analysis and linear analysis to establish its worthiness.

Original languageEnglish
Pages (from-to)187-233
Number of pages47
JournalInternational Journal of Structural Engineering
Issue number3
Publication statusPublished - 31-07-2013


All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering

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