The article presents the results of the research of the emergency loads effect on reinforced concrete turbine foundations of different types. Computational experiments were performed in a specialized finite element analysis program NX/NASTRAN. Calculations of the high-power turbine foundations of frame, wall, and vibration-insulated structures have been carried out. Emergency loads associated with a short circuit and a loss of synchronization (generator failure) were taken into account in the calculations by equivalent static and dynamic approaches. The comparison was carried out according to the calculated values of displacements and forces, in the elements of the computational model, where extreme values of forces were expected from the design experience. The results of the comparative analysis indicate that the use of a widespread statically equivalent approach often leads to a multiple overestimation of forces and displacements, in comparison with using of dynamic approach. Therefore, strength and dynamic analysis of high-power turbine foundations under emergency loads, it is necessary to apply a dynamic approach. A statically equivalent approach can be used for analysis of foundations for turbine units of relatively low power.