Effect of Soil-Structure Interaction on the dynamic behaviour of masonry and RC buildings

The interaction between soil and structure (SSI) is a typical issue of structural and geotechnical engineering, still open regarding its practical applications. Further investigation is, hence, required to develop simplified but reliable methods to account for such a phenomenon in routine structural analyses. Soil-structure interaction may play an important role (typically ignored) in the assessment of the dynamic behaviour of the structures in terms of frequencies and vibration modes. Clearly, to account for SSI a proper characterization of the foundation soils is required. In the present work, after a description of the state of the art on SSI, the authors present the results of several parametric analyses carried out for different types of Reinforced Concrete (RC) and masonry buildings; the analyses are aimed at estimating the effect of SSI on different structural typologies by means of approaches widely used in the literature.

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