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Title |
Analysis of Behavior Characteristics According to The Foundations Fixing Conditions of Storage Racks
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Authors |
박채린(Chae-Rin Park) ; 허광희(Gwang-Hee Heo) ; 김충길(Chung-Gil Kim) ; 박진용(Jin-Yong Park) ; 고병찬(Byeong-Chan Ko) |
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DOI |
https://doi.org/10.11112/jksmi.2021.25.3.68 |
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Keywords |
적재설비; 기초 고정조건; 거동특성 분석; El-Centro 지진파; 진동대 실험 Storage racks; Foundations fixing conditions; Behavioral characteristics analysis; El-Centro earthquake wave; Shake table test |
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Abstract |
Storage racks have suffered huge losses due to earthquakes, but related research and regulations are relatively insufficient non-structural elements compared to the structural elements. In this study, we tried to experimentally analyze the behavioral characteristics of storage racks due to external force according to the fixing conditions of the column-foundations connection of storage racks. In general, the column-foundations connection of storage racks is installed according to the user's convenience without installation standards and regulations. For this reason, this study conducted a behavior analysis test on four full-scale storage racks with the condition of column-foundations connection of four typical storage racks. The behavior characteristics analysis test was performed by two-direction of the shake table with El-Centro seismic wave. To confirm the behavior characteristics according to the magnitude of the seismic load, 50% ~ 150% of the seismic waves were increased by 50% for each test. In addition, a resonance search test was conducted to confirm the natural frequency of each storage racks foundations fixing condition. Among the data obtained through the test, the displacement of the top layer and the permanent displacement after the test were compared for each condition to analyze the behavior characteristics of the column-foundations fixed conditions of the storage racks. As a result, the change of natural frequency was small in storage racks due to the change of the conditions of the foundations, and the behavior characteristics were changed due to the difference of the restoring force due to the change of the storage racks foundations condition rather than the influence of the natural frequency of the input load.
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