Research on the dynamic characteristics and isolation properties of nuclear power liquid storage structures considering fluid-structure interaction effects
The swimming pool-type reactor is a type of nuclear heating reactor facility,and the pool of the reactor is a critical component.During an earthquake,the liquid inside the pool undergoes fluid-structure interaction,posing a threat to the integrity of the pool.Therefore,seismic analysis and isolation protection are necessary.Firstly,the pool of a certain reactor is taken as the research object.Under the input of bidirectional ground motion during an earthquake,a comparative analysis of the dynamic responses of non-isolated and isolated structures is conducted.Then,displacement,acceleration,principal stress,wave height,and base shear indicators were then used to analyze the degree of improvement in the seismic performance of the liquid storage structure by the isolation layer.The results show that the addition of an isolation layer significantly reduces acceleration,displacement,stress,and base shear,indicating a significant isolation effect.However,for wave height,isolation is not yet effective in controlling it and may even have an amplification effect.The research findings can provide reference for the seismic isolation design of nuclear power liquid storage structures.
reactor poolfluid-structure interactionisolation layertime history analysisseismic response
万方数据
维普
