| 研究生: |
陳柏儒 Chen, Po-Ju |
|---|---|
| 論文名稱: |
新型隔振墊對降低浮動樓板衝擊音之影響 Effects of Novel Vibration Insulators on Impact Sound Insulation of Floors |
| 指導教授: |
黃忠信
Huang, Jong-Shin |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 土木工程學系 Department of Civil Engineering |
| 論文出版年: | 2015 |
| 畢業學年度: | 103 |
| 語文別: | 中文 |
| 論文頁數: | 85 |
| 中文關鍵詞: | 樓板衝擊音 、浮動樓板 、隔振墊 、有限元素法 |
| 外文關鍵詞: | floor impact sound, floating floor, vibration insulator, finite element method |
| 相關次數: | 點閱:107 下載:3 |
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本研究使用有限元素套裝軟體ABAQUS,針對含浮動樓板建築物之力學與衝擊音進行數值分析。首先,建立浮動樓板之力學分析模型,其構件由上而下依序為磁磚表面材、RPC夾板及隔振墊,其中任一相鄰隔振墊間皆填充玻璃棉,主要探討浮動樓板RPC夾板於承受設計載重與局部載重作用下之最大水平拉應力。然後,根據力學分析模型之數值結果,再建立一聲學數值分析模型,本研究採用CNS 8465-2規範之標準,針對輕量衝擊源所造成樓板衝擊音之音壓級評估曲線,進行數值分析與隔音效能評估,進而建議最佳之隔振墊材質、尺寸及排列方式。
研究結果顯示,隔振墊高度對RPC夾板力學行為之影響非常明顯,若使用較高之隔振墊,RPC夾板之垂直變位將增加,導致其底部所承受之水平拉應力較大,甚至產生撓曲破壞。至於聲學模型之數值分析結果顯示,楊氏模數較低隔振墊,對樓板衝擊音隔音效果較佳,此外,隔振墊面積與高度亦將影響樓板衝擊音隔音效果,所以,隔振墊勁度實為影響樓板衝擊音隔音之一關鍵因子。
In this study, Numerical models were generated by using finite element software ABAQUS to analyze the mechanical and acoustic properties of floating floors. First, the mechanical model of the floating floor which is a layered composite plate with tiles, a Reactive Powder Concrete (RPC) slab and vibration insulators, and adjacent vibration insulators are filled with glass wool. Then effects of vibration insulators on the maximum level tensile stress of the RPC slab subjected to uniform loads and partial concentrated loads are studied numerically. Then acoustic numerical models were created by the results of mechanical numerical models. This study does numerical analyses and soundproof evaluations according to CNS 8465-2 standard, and then optimum materials, sizes and arrangements of vibration insulators are recommended.
The results show that the height of vibration insulator has an influence on mechanical behaviors of the RPC slab. If vibration insulators with large heights are used, the vertical displacement of the RPC slab will increase, and leading to the bottom of the RPC slab will be subjected to greater level tensile stresses. As for results of acoustic numerical models show that vibration insulators with low Young's modulus have good soundproof performances. In addition, the area and height of vibration insulator also affect soundproof performances. Hence the stiffness of vibration insulator will be a key factor to affect impact sound insulation of floors.
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校內:2017-07-21公開