Comparison of linear and non-linear, space frame-raft-soil interaction analyses, by using finite element method
by H.M. Rajashekhar Swamy; Krishnamoorthy; D.L. Prabakhara; S.S. Bhavikatti
International Journal of Structural Engineering (IJSTRUCTE), Vol. 4, No. 3, 2013

Abstract: 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.

Online publication date: Sat, 28-Jun-2014

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