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Shake table tests on clutter levels of typical medicine shelves and contents subjected to earthquakes

机译：在典型的药品架子和受地震影响的物品上进行振动台测试

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摘要

Overturned shelves and fallen objects scattered on floors are one of the most frequently observed forms of nonstructural damage after earthquakes. The term 'clutter' is adopted in this study to represent this type of damage. Clutter may cause obstructions and thus hinder the use of a room. Making a seismic evaluation of clutter is a daunting task, due to the diversity of the types of shelves and objects and the way the objects are stored. Nonetheless, in order to achieve performance-based seismic evaluation, especially for critical facilities such as hospitals, it is reasonable to undertake the estimation of clutter when examining the association between the performance of structural and nonstructural elements. Of particular interest in this paper is clutter caused by objects stored on medicine shelves in pharmacies, which are one of the critical departments for delivering post-earthquake emergency care. Shake table tests were conducted on three conventional types of medicine shelves. Sinusoidal waves and earthquake motions were input uniaxially. The results of the tests using the sinusoidal wave input indicated the relationship between the input excitation intensity and clutter level expressed in scattering distance from the front of the shelf. Tests using earthquake motion input were then conducted and the results were compared with those for sinusoidal waves. Based on a comparison of the results from these tests, criteria for the seismic evaluation of clutter caused by medicine shelves due to earthquakes were proposed.
机译：倒塌的架子和散落在地板上的下落的物体是地震后最常见的非结构性损坏形式之一。在本研究中采用“杂波”一词来表示这种类型的损害。杂物可能会造成障碍，从而阻碍房间的使用。由于架子和物体的类型以及物体的存储方式的多样性，对混乱进行地震评估是一项艰巨的任务。但是，为了实现基于性能的地震评估，尤其是对于关键设施，例如医院，在检查结构和非结构元件的性能之间的关联时，有必要对混乱进行估算。本文特别关注的是杂物，这些杂物是由药店药架上存储的物品引起的，杂物架是提供地震后紧急护理的关键部门之一。在三种常规类型的药品架子上进行了振动台测试。正弦波和地震运动是单轴输入的。使用正弦波输入的测试结果表明了输入激发强度与杂波水平之间的关系，杂波水平表示为从架子前部的散射距离。然后使用地震运动输入进行测试，并将结果与​​正弦波的结果进行比较。在对这些测试结果进行比较的基础上，提出了针对地震引起的药品货架造成的混乱进行地震评估的标准。

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