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Investigating the vibration properties of integrated ceiling systems considering interactions with surrounding equipment

机译：考虑与周边设备相互作用的综合天花板系统的振动特性

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Studies on recent earthquakes highlighted that buildings with minimal structural damage still suffer from extensive damage and failure of nonstructural components. The dropping and damage of suspended ceiling systems, which typically consist of acceleration-sensitive nonstructural elements, resulted in lengthy functional disruptions and extended recovery time. This article experimentally and analytically examined the vibration properties of an integrated ceiling system considering the interactions with surrounding electrical equipment. The theoretical stiffness and corresponding frequency of electrical equipment were initially derived and then verified by subsequent vibration tests and numerical analyses. The seismic performance of the air conditioner (AC) was evaluated with different installment configurations based on design spectra and floor response spectra. Vibration tests of the suspended integrated ceiling system considering the interactions with surrounding equipment showed that the inclusion of peripheral constraints increased the first horizontal vibration frequency of the ceiling system by a factor of approximately 6. The natural frequencies of all components in the integrated ceiling system were almost identical, which was attributed to the coupled behavior between the ceiling panels and surrounding equipment, emphasizing the effect of interactions between adjacent components during dynamic analysis. Based on the above experimental investigation, an associated numerical model of the integrated ceiling system was created. Finally, corresponding parametric studies that included the interactions with surrounding equipment, reinforcing braces of ACs and strengthening members at the rise-up location between two elevations were performed.
机译：最近地震的研究突出显示，结构损伤最小的建筑仍然遭受广泛的损坏和非结构组件的失效。悬浮天花板系统的掉落和损坏，通常由加速敏感的非结构元素组成，导致冗长的功能破坏和延长恢复时间。本文通过实验和分析地检查了考虑与周围电气设备相互作用的集成天花板系统的振动性能。最初衍生理论刚度和电气设备的相应频率，然后通过随后的振动测试和数值分析来验证。基于设计光谱和地板响应光谱，用不同的安装配置评估空调（AC）的地震性能。考虑到与周围设备的相互作用的悬浮集成天花板系统的振动测试表明，包含外围约束的含量增加了天花板系统的第一水平振动频率大约6.集成天花板系统中所有组件的自然频率是几乎相同，其归因于天花板和周围设备之间的耦合行为，在动态分析期间强调相邻部件之间的相互作用的影响。基于上述实验研究，创建了集成天花板系统的相关数值模型。最后，对应于与周围设备的相互作用，在两个升高之间的升降位置处加强AC的括号和加强构件的相应参数研究进行了处理。

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