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| Application of Stiffness Equivalent In Seismic Analysis of Containment Sump Filter Retention Basket |
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| DOI：10.7643/issn.1672-9242.2023.02.013 |
| KeyWord:containment sump filter, retention basket, filter plate, equivalent, seismic analysis |
| Author | Institution |
| LAN Tian-bao |
China Nuclear Power Engineering Co., Ltd., Beijing , China |
| DONG Jiao-jiao |
China Nuclear Power Engineering Co., Ltd., Beijing , China |
| PENG Xing-ming |
China Nuclear Power Engineering Co., Ltd., Beijing , China |
| SHENG Feng |
China Nuclear Power Engineering Co., Ltd., Beijing , China |
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| Abstract: |
| The work aims to calculate the stiffness equivalent of the filter plate of the containment sump filter retention basket. Energy method and anisotropy method were used to calculate the equivalent stiffness of the filter plate of the containment sump filter retention basket. The frequency obtained by the energy method based on equal deformation energy was much larger than the cutoff frequency of seismic response spectrum, which was suitable for the engineering requirements of the stranded basket model. There was a 14% difference between the principal frequency obtained by anisotropy method and that of the actual model. Both methods can meet the engineering requirements, and the anisotropic method is closer to the actual model. Finally, the model based on the energy method and the anisotropic stiffness equivalent filter plates has good results. |
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