| 研究生: |
曾鴻程 Tseng, Hung-Cheng |
|---|---|
| 論文名稱: |
古蹟暨歷史建築物之微振動量測及應用 Ambient Vibration Measurement of Historic Buildings And Application |
| 指導教授: |
張嘉祥
Chang, Ja-Shian |
| 學位類別: |
碩士 Master |
| 系所名稱: |
規劃與設計學院 - 建築學系 Department of Architecture |
| 論文出版年: | 2008 |
| 畢業學年度: | 96 |
| 語文別: | 中文 |
| 論文頁數: | 146 |
| 中文關鍵詞: | 微振動量測 、參訪人數 、補強 、車行振動 、古蹟 |
| 外文關鍵詞: | strengthening, historic buildings, the number of visitors, vibrations induced by trains, ambient vibration measurement |
| 相關次數: | 點閱:114 下載:8 |
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古蹟歷史建築保存過程,對於建築物動態特性的瞭解,是掌握耐震安全的基礎性工作之一,然而目前國內這方面本土資料之建立仍相當有限,因此,本研究選擇三個不同類型之古蹟及歷史建築物來進行微振動量測,再根據量測結果,識別其結構特性,以為修復設計上之參考。三座古蹟、歷史建築量測分析結果如下:
(一) 舊大安溪橋
車行振動在高頻區有較大之反應,最大振幅均發生在10Hz以上。且列車節數與振幅之大小成正比的關係。但各頻帶之振幅dB值有其上限,均不超過50dB。另經由基本振動週期與車行振動之比較,顯示近斷橋區與行水區均較非行水區危險。因此,在修復再利用的過程中,近斷橋區與行水區之橋墩、橋基修復補強應為首要之務。
(二) 鹽水八角樓
參訪過程人員造成之振動,對於鹽水八角樓二樓樓板垂直向的影響最大,且各參訪行為之振幅大小是與參訪人數多寡成正比的關係。若未來八角樓二樓開放提供民眾參觀,參訪人數宜控制在10人之內。另參訪人數較多時,且出現跑動的行為下,對於木造樓板之樑、柱接合結點與出挑之前檐廊的影響較顯著,在管理維護上有必要加以注意。
(三) 中都唐榮磚窯場-紅磚事務所
比較補強前後之量測結果可知,以碳纖包覆樓板樑之補強方式對本建築之樓板及整體建築之剛度有其重要貢獻。本建築若再針對樓板之東西向予以補強,則建築物東西向之剛度亦可適度提升,整體而言樓板之承載力也將有所提升。
For the conservation of historic buildings, establishing the dynamic characteristics of each building is one of the basic work, especially for the seismic safety. However, so far only scarcely study has been conducted in Taiwan. Therefore, in this thesis, three historic buildings belonging to different construction type are selected for measuring the ambient vibration. According to the measuring results and the system identification processed, the structure characteristics of these three structures are obtained. These information are good for coming conservation design and daily maintenance of these three historic buildings.
1.Old Da-an bridge
The vibrations induced by trains have larger response in high-frequency range and the largest amplitude is greater than 10 Hz. Also the amplitude is proportional to the number of carriage, but no matter the frequency, the amplitude is smaller than 50dB. Comparing the locations measured, it is found that the bridge vibration of river land area and near broken bridge area, in general, is more serious than that of other bridge area. Therefore, the repairing and strengthening of bridge piers and foundations which are in the above-mentioned areas should be much cared during retrofit and conservation.
2.Yan-shuei Octagonal Display Hall
The vibration caused by visitors is most visible for the second floor in vertical direction, and the amplitude is proportional to the number of visitors. According to the measure study, it is suggested that second floor of Yan-shuei Octagonal Display Hall should limit the visitors in ten, when open to the public. Besides, the vibration caused by running or rapidly walking visitors will influence the beam-to-column joints of wood floor and overhand veranda, thus well attention has to be paid during daily maintenance.
3.Tangrong Brick Kiln - brick office
Comparing these vibration period, before and after the strengthening, it shows that using FRP reinforcement has made a great contribution to stiffness of whole building and floor. If the strengthen also conducted for the floor in east-west direction, the stiffness and bearing capacity of floor could be further improved.
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