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標題: 土壤-不規則建築結構裝設多元調諧質量阻尼器之減振效用
Vibration Control Effectiveness of Soil-Irregular Building Systems equipped with Multiple Tuned Mass Dampers
作者: 林育信
Lin, Yu-Hsin
關鍵字: SSI;土壤-結構互制;MTMD;TC;多元調諧質量阻尼器;扭轉耦合
出版社: 土木工程學系

This thesis deals with the analysis of dynamic characteristics of soil-irregular building interactive system, the MTMD parameter design considering the soil-structure interaction (SSI) effect, and the investigations of MTMD control effectiveness under bi-directional earthquake excitations. The optimal MTMD parameters are determined by minimizing the mean-square displacement response ratio contributed by the first three modes of controlled degree-of-freedom between the building with and without MTMD. According to this research, it is shown that the existence of SSI effect will reduce the modal frequencies of the combined building-soil system. Without considering the SSI effect, the MTMD probably does not tune to the right frequency, so that the detuning effect deteriorating the MTMD control effectiveness will occur. In this study, the MTMDs with the consideration of the SSI effect are useful as the buildings are built on hard soils. On the soft soil, the MTMDs become less effective in most situations because of the increase of system damping. Only for the slender building with significant foundation rocking, the MTMD control effectiveness is more obvious.
Appears in Collections:土木工程學系所

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