Seismic performance of base-isolated structures for swimming pool reactors under different foundation conditions

• Published in: PloS one Vol. 19; no. 10; p. e0311216
• Main Authors: Zhao, Jie, Wang, Jianshan, Huang, Jiehua
• Format: Journal Article
• Language: English
• Published: United States Public Library of Science 18.10.2024
• Subjects: Carbon; Design; Earthquake resistance; Earthquake resistant design; Energy dissipation; Epistemology; Equipment Design; Evaluation; Heating; Interaction models; Liquid sloshing; Load; Methods; Models, Theoretical; Nuclear power plants; Nuclear reactors; Reactors; Recreation; Response spectra; Seismic activity; Seismic design; Seismic engineering; Seismic isolation; Seismic response; Soil mechanics; Soil-structure interaction; Spectrum analysis; Swimming pool reactors; Swimming Pools; Viscoelasticity; Wave height; China
• ISSN: 1932-6203; 1932-6203
• DOI: 10.1371/journal.pone.0311216

The swimming pool reactor (SPR) is an innovative and environmentally friendly heating source. An SPR building was selected as the research subject, and a 3D dynamic interaction model incorporating the liquid sloshing effect was created using ANSYS software and the secondary development characteristics of user-programmable features (UPFs). Energy dissipation from scattered waves was accounted for using viscous-spring boundary elements, while the dynamic hydraulic effect was modeled via the Housner equivalent mechanical model. Considering soil-structure interaction (SSI) effects, this study examines the impact of isolation measures on the structure’s seismic mitigation performance. It investigates how varying foundation conditions affect the seismic resistance of the isolated structure. Results indicate that seismic isolation ratios for acceleration, floor response spectra, displacement, and base shear diminish as site stiffness decreases. However, regarding sloshing wave height, seismic isolation amplified the height under all conditions but remained within safe limits. These findings offer valuable insights for seismic design across different SPRs.