Abstract
This paper focuses on addressing seismic safety evaluation and resilience analysis of nuclear containment structure. Through the derivation of fragility formulas and the introduction of a new set of limit states (LSs), this paper accomplishes the fragility analysis and assesses failure probabilities comprehensively. Furthermore, safety evaluation and resilience analysis procedures, specifically for nuclear containment, are proposed alongside relevant determination criteria. In order to further improve the seismic performance of nuclear containment, the periodic foundation is analyzed. Theoretical formula is derived to determine the combination of 2 materials (concrete and rubber). Key findings include the safety demonstration of HUALONG 1 through probabilistic reliability analysis, the safety level (Level-I; basic integrity) and resilience level (Level-I). The effectiveness of periodic foundations is confirmed and supported by the average damping rates of concrete and liner strains, which can reach up to 6.154 % and 11.007 %, respectively. This research provides valuable insights for improving the seismic safety and resilience of containment, crucial for ensuring the integrity and functionality of this critical infrastructure system.
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