Abstract
The modal analysis of the super-large FRP combined tank structure system with floating roof is carried out. Firstly, the finite element model of the super-large FRP combined tank structure system with floating roof is established. Then, the modal analysis of the super-large FRP combined tank structure system with floating roof is carried out. The results show that when the storage height is less than or equal to 50% of the total storage height, the first-order frequency of the FRP combined tank fluid coupling vibration is very small. When the storage height is large, the vibration frequency of the FRP combined storage tank liquid coupling is larger than that when the water storage state is less than or equal to 50%. The vibration frequency of the tank fluid coupling also decreases with the increase of the tank radius. The larger the tank radius is, the more significant the tank fluid coupling effect is.
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