Abstract
Soil-structure interaction analysis for a strip footing is presented using a coupled finite-infinite element formulation. Two-dimensional mapped infinite elements with 1/ r type of decay are used. The shape functions for mapped infinite elements with 1/√ r type of decay are also presented. In the interactive analysis of footing, non-linear stress-strain behaviour of the soil using the hyperbolic fit is taken into account. The results are presented for both rigid and flexible footings. It is found that the vertical stress distribution for a flexible footing matches very well with the Boussinesq solution. The infinite elements in combination with the conventional finite elements yield a very attractive coupled formulation in terms of far field physical representation, computer use and data preparation.
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