Abstract: Influences of soft foundation on the dynamic response of hydropower house and methods of
dynamic loads application are investigated using FEM simulation, focusing on a detailed analysis of the
composition, amplitude and frequency of dynamic loads on the generator units. Results show that more
attention must be paid to the impact of foundation boundary conditions in the case of a significant difference
in stiffness between the house structure and its foundation. And the simulated vibrations are closer to the real
cases if the loads are applied according to frequency differences. Coupling effects between generator pier
vibrations in different directions have been observed.