| Abstract: | | 1. |
The general vibration state of the control building of the hydrostation depends directly on the dynamic effect of the No. 1 unit. Vibration of the control building occurs in the zone of resonance with a frequency of 14.7 Hz, which corresponds to the blade frequency of the unit.
| | 2. |
The presence of an expansion joint between the block of the units and assembly area for all practical purposes does not prevent propagation of vibration and does not provide the principle of isolation of the block of units.
| | 3. |
One of the most effective methods of combatting resonance vibrations is to change the relationship between the natural frequency and frequency of disturbance by changing the rigidity of the structure.
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Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 3, pp. 27–30, March, 1989. |
