| 研究生: |
黃富雄 Huang, Fu-Hsiung |
|---|---|
| 論文名稱: |
原型填充槽溝對波傳阻隔效果之試驗研究 The study of vibration isolation using with full-size filled trench |
| 指導教授: |
倪勝火
Ni, Sheng-Huoo |
| 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: | 2004 |
| 畢業學年度: | 92 |
| 語文別: | 中文 |
| 論文頁數: | 171 |
| 中文關鍵詞: | 振動防治 、槽溝 、振波阻隔 、強迫振動 、含水膜包 |
| 相關次數: | 點閱:97 下載:5 |
| 分享至: |
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本文研究主要係利用現地試驗的方法,探討原型含水膜包槽溝對橋墩結構與土壤互制所產生地表振動之阻隔效應。試驗過程使用之參數包括基礎振動頻率以及槽溝幾何形狀尺寸,量測結果以地表振幅降低比 與平均地表振幅降低比 來表示,並以槽溝幾何形狀參數與 之關係探討減振膜包槽溝之設計依據。
現地減振試驗結果顯示,被動式原型膜包槽溝欲對振波有阻隔效果即y方向 要小於或等於0.25,主要取決於深度參數D,如振源為水平垂直測線出力,則其深度達1.9倍雷利波波長時,可當槽溝最佳參數;如振源為水平平行測線方向,其深度參數D至少等於2.7。振源兩種出力方式均只對y方向有明顯之阻隔效果,除了槽溝參數之影響,主要是槽溝填充物為含水膜包,因水不能抗剪,故對此方向有好的減振效果。又因振源基礎結構與前人之振動阻隔研究有所不同,故槽溝深度參數比文獻建議值大。
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