This paper gives the results from the analysis of the influences of the layered subsoil to the seismic excitation of nuclear power plant hall building. Two important characteristics that distinguish the dynamic soil-structure interaction system from other general dynamic structural systems are the unbounded nature and the nonlinearity of the soil medium. The dynamic soil-structure interaction can sometimes modify significantly the stresses and deflections of the full structural system from the values that can be developed if the structure were designed on a rigid foundation. Generally, when establishing numerical dynamic soil-structure interaction models, the following problems should be taken into account.

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