本文主要探討利用結構動力學上減振器的概念，使用一組單自由度的附加物作為減振器，設置於微振動過大的樓板下方，使震動能量自樓板傳遞至減振器上，以降低樓板過大的微振。本研究佐以電腦理論分析，及實體實驗驗證兩方式，進一步探討樓板微振動減振器應用之可行性。文中特別考慮從1/3八度音程頻譜的觀點，來減低振動，研究中了解，影響減振器效用最主要的參數為減振器與主結構之間的質量比、頻率比、及減振器自身的阻尼比。文中檢討了許多不同的參數組，找到許多適合用在樓板微振動控制的參數。以往將減振器自振頻率設計成諧調主結構頻率，而研究發現將頻率比設計在在60%~80%的低頻率比，將主頻率移到1/3八度音程譜的另一個頻帶，會有更好的減振效果，尤其應用在微振動的減振上，可使加裝減振器後的傳遞函數曲線不會超出原來的傳遞函數曲線，而能適應各種外力，如寬頻者。此外對整個高科技廠房的電腦模擬中，使用符合上述研究的減振器來模擬減振，也有良好的減振效果。實體實驗部分，則透過真實的樓板實驗，真正地裝置於樓板結構，並且裝設振動量測儀器，真實地記錄外力擾動後樓板有無裝設減振器的動態反應，檢討了市面上可取得的橡膠彈簧、液態純黏性阻尼器應用於減振器的可能性，也比對實驗與模擬的結果，期望藉由此一研究解決樓板微振動過大的問題。

　The major topic of this thesis is to utilize the concept of vibration damper to set up an additional 1 DOF mass below a floor, where the micro vibration is too much, to reduce the micro vibration on floors. This research combines the computer analyses and RC specimen experiment, and verifies the effectiveness of the vibration damper for the micro vibration on the floor. In this thesis, special emphasis is placed on the effect of 1/3 octave frequency spectrum. The author tried different parameters including the mass ratio, frequency ratio (between vibration damper and the main structure), and damping ratio of vibration damper, and discovered that it is better to design a low frequency ratio at about 60%~80% so that the new transfer function curve (with added vibration damper) stayed below the original transfer function curve and the floor vibration can be reduce . This vibration damper can be applied to various types (especially the wide band) of external forces. Computer simulation of a Hi-Tech factory building floor, using the vibration damper approach proposed in this research, show that vibration could also be reduced. In the component tests, rubber springs and fluid viscous dampers were used together with steel spring to compose the vibration damper. Comparisons were made between experimental result and computer simulation. It is shown that the vibration damper designed by this thesis will reduce the micro vibration on floors.

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