Comparison of Acceleration Amplification for Seismic Behavior Characteristics Analysis of Electrical Cabinet Model: Experimental and Numerical Study
Source abstract
Abstract
Given the critical role of electrical cabinets in the post-earthquake recovery and emergency response of nuclear power plants (NPPs), a comprehensive assessment of their seismic performance is essential to ensure operational safety. This study analyzed seismic behavior by fabricating an electrical cabinet model based on the dynamic characteristics and field surveys of equipment installed in a Korean-type NPP. A shaking table test with simultaneous tri-axial excitation was conducted, incrementally increasing the seismic motion until damage was observed. A numerical model was then developed based on the experimental results, followed by a seismic response analysis and comparison of results. The findings verified that assuming fixed anchorage conditions in the numerical model may significantly overestimate seismic performance, as it fails to account for the nonlinear behavior of the anchorage system, as well as the superposition between global and local modes caused by cabinet rocking and impact under strong seismic loading. Furthermore, damage and impact at the anchorage amplified acceleration responses, significantly affecting the high-frequency range and the vertical behavior, leading to substantial amplification of the in-cabinet response spectrum.
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Research context
OpenAlex topics: Hydraulic and Pneumatic Systems · Structural Health Monitoring Techniques · Seismic Performance and Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Seismic Research and Test Center, Pusan National University, 49, Busandaehak-ro, Yangsan 50612, Republic of Korea
Structural and Seismic Safety Research Division, Korea Atomic Energy Research Institute, 111, Daedeok-daero 989beon-gil, Daejeon 34057, Republic of Korea
Central Research Institute, Korea Hydro & Nuclear Power Co., Ltd., 70, Yuseong-daero 1312beon-gil, Daejeon 34101, Republic of Korea
Funding
Korea Institute of Energy Technology Evaluation and Planning (KETEP) · Ministry of Trade, Industry and Energy (MOTIE) of the Republic of Korea
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