Abstract
PurposeAn inter-story isolation structure (IIS) for AP1000 nuclear power plants (NPPs) is provided to resolve the conflict of seismic safety and the optimal location of air intakes.Design/methodology/approachThe effect of passive cooling system (PCS) is better with lower altitude of air intakes than that in the original design of AP1000 NPPs. Seismic performances of IIS NPPs, including the seismic responses, damping frequency bandwidth and seismic reduction robustness, are improved by combining the position of air intakes lower and the optimal design method.FindingsTheoretical analysis and numerical simulation are illustrated that the seismic reduction failure of IIS NPPs is the lowest probability of occurrence when PCS has highest working efficiency.Originality/valueThe IIS NPPs can transfer the contradiction between PCS work efficiency and seismic safety of NPPs to the mutual promotion of them.
Subject
Computational Theory and Mathematics,Computer Science Applications,General Engineering,Software
Reference29 articles.
1. Direct displacement design of tall cross laminated timber platform buildings with inter-story isolation;Engineering Structures,2018
2. Seismic analysis and evaluation of the base isolation system in AP1000 NI under SSE loading;Nuclear Engineering and Design,2014
3. Research on effective parametric fields of TMD system;Industrial Construction,2004
4. Seismic isolation of nuclear power plants[C],2012