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Abstract
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Soil-Structure Interaction (SSI) is an outstanding factor that influences the linear and nonlinear
performance of any structure, and it can be taken into account as one of the most
important and effective considerations on the seismic behavior of buildings. On the other
hand, historic masonry buildings are specific and important structures, which are significantly
affected by SSI. Preservation of these buildings is one of the main demands of every
culture and every society; and evaluating the behavior of these buildings under natural
events such as earthquake, considering aforementioned SSI phenomenon, is an essential
step, in this regard. In this paper, the impact of SSI on the out-of-plane behavior of an
ancient building in Iran, named Arge-Tabriz, has been investigated utilizing Finite Element
Method (FEM). Modal and nonlinear Time-History (TH) analyses results revealed that SSI
has a significant decreasing effect on the acceleration response due to removing the effective
mode vectors from the resonance area of the acceleration response spectra. On the
contrary, SSI has a remarkable increasing impact on the displacement response of Arg’s
walls according to the displacement response spectra.
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