In the past three decades, a lot of research has been carried out in the area of dynamic soil-structure interaction. This work can be broadly classified as analytical, numerical and hybrid or mixed. Some of the numerical and hybrid techniques relevant to the proposed method are discussed here. The proposed hybrid method is then described. The method uses a three-dimensional finite element idealization in the near field and a semi-analytic scheme based on the principles of wave propagation in multilayered half space in the far field. The hybrid method thus combines the advantages of both the numerical and analytical techniques. An important aspect of the soil-structure-interaction problem considered appropriately only in this method of analysis is the presence of waves scattered from the soil-structure interface and geometrical irregularities in the soil.
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