重要儲存櫃抗震基座研究－以醫療冰箱為例

A Study on the Aseismic Base of Important Storage Facilities-- Illustrated by a Medical Freezer

在國內建築物耐震設計規範及解說中，目前設有專章規定附屬於建築物的非結構物的設計地震力相關規定；由此可見，除了提升建築物耐震能力外，附屬於建築物內的設備物，受到地震的影響亦不容忽視。在建築物類型中，醫院屬於重要的建築物，放置其內的各項設備物（醫療設備、儲物櫃、手術吊掛設備、病床……等），必須增加其耐震能力以降低損害。然而，在2018年2月6日花蓮地震損害調查中發現某醫院醫療冰箱傾倒與滑移、病例櫃倒塌及多項非結構物損害，上述損害皆會造成醫院營運及管理醫療用品的困難，不可不慎。為探討地震對於設備物的影響，本研究以醫療冰箱為例進行振動台實驗，並設計磁性基座固定於冰箱底部取代一般固定方式（滾輪煞車），以分析其耐震性能。本研究以三種不同歷時（近斷層歷時、遠域歷時、某醫院頂層歷時）針對四種不同固定方式的試體進行動態模擬，並以縮放歷時驗證磁性基座理論公式的適用性。結果顯示，安裝磁性基座的試體均能提供有效的束制，使設備物不致發生大量的滑移或傾倒行為；在地震超過0.4g時，磁性基座會產生些微移動狀況；然而，因基座中磁鐵貢獻的正向吸力及基座的彈簧側向力輔助，使設備物能順利復位，期望這些結論，能提供業界或進一步研究者的參考。

 

The importance of aseismic capability were due to not only the buildings but also the non-structures. Therefore, the non-structures which attached to the building were considered in the prevailing Taiwan Seismic Codes. In addition, the hospitals were one of the important building in the numerous types of architecture, and increasing the aseismic capability of the non-structure components which attached to the hospital could reduce the damage. However, the medical freezer and several equipment of hospital were slipped and overturned in the Hualien Earthquake (20180206). To resolve the phenomenon, the Medical Freezer (MF) was conducted as the main test specimen, and the magnetic connection (MCN) was installed on its base to test the response in different time history (near fault, far field and the top recording on the hospital) in order to verify the validity and rationality of formula. According to the final results of this study, the MCN were slipped when the earthquake PGA exceeded 0.4g, however, the MF was resetting favorably due to the normal force of magnetic which were installed in the MCN and the spring on corner of the plate also provide effective constraint to avoid it slipping down. Compared with the MF which excluded the MCN, the final results might be a reference for further research.