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中文標題: 含隔振裝置之足尺冷卻水塔設備試驗研究
英文標題: Experimental Study of a Full-Scale Vibration Isolated Cooling Tower Equipment
編號: NCREE-13-002
語言: 中文
編輯:
媒體型式: 紙本
作者:
黃震興   鄭仲志   林凡茹   汪向榮   
中文摘要: 建築物耐震性能除考量結構物本身耐震能力決定外,亦需考慮非結構之耐震能力。近幾年來,非結構在地震中損壞的案例屢見不鮮,非結構的損壞,往往影響到建築物之使用性,導致建築物損失部分功能性,喪失原有結構物設計之功能。
冷卻設備為避免運轉中,將振動傳至樓版,往往在基座加裝彈簧避振器,以降低振動造成的噪音振動影響。然而在地震力作用下,加裝彈簧避振器之冷卻水塔設備物卻比以螺栓錨定之固接方式更容易發生傾覆、失穩情況。
本文針對重要建築物常使用之冷卻水塔設備進行試驗,探討冷卻水塔設備之力學行為和破壞方式。本文試驗共可分為兩部分,擬靜態反覆載重試驗與動態振動台試驗;反覆載重試驗目的為,觀察彈簧避振器在不同階段之力學行為,與破壞模式;動態振動台試驗則探討冷卻水塔隔振系統在地震歷時中各項動態反應,依據試驗結果,得到冷卻水塔系統基本動態特性,例如自然振動頻率、阻尼比、模態、動態放大係數等,最後根據其破壞模式,進一步提出耐震能力改善建議。
英文摘要: The seismic performance of a structure depends not only on the performance of structural components but also on performance of the equipment and other in-house facilities. To maintain the functionality of a structure after a major earthquake, the important facilities have to be functional after the quake. In this study, a full scale cooling tower system with vibration isolation springs will be experimentally investigated for its cyclic hysteretic behavior and dynamic behavior. Cyclic loading tests and shaking table tests are conducted. The damage mechanism and dynamic amplification factor of the vibration isolation spring are identified. In addition, since the cooling tower cannot be considered as a rigid body while some other mechanical/electrical system such as emergency power generator, the dynamic behavior and seismic vulnerability of the cooling tower are also investigated.
關鍵字: 非結構耐震能力、反覆載重試驗、振動台試驗
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