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碩士論文公告區 |
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| 年度： | 92 | |
| 姓名： | 高士奇(Shih-Chi Kao) | |
| 論文題目(中)： | 碳纖維貼片補強木構件之耐久性能測試研究 | |
| 論文題目(英)： | Durability of Strengthening Wooden Members Using CFRP Sheets | |
| 摘要(中)： | ||
| 使用高強度之碳纖維複合材料於土木工程結構之修復與補強，近年來已在國內外開始發展及應用相關理論和施工法。然而，碳纖維複合材料補強木作結構之研究，確是相當不足，在耐久性方面的研究更是缺乏，也未能適時進行此方面的研究。 本研究主要探討碳纖維補強木構件之耐久性。為了確認其耐久性，將木構件（柳杉）試體貼覆碳纖維貼片，放置於烘箱＋人工海水乾濕循環環境或凍融循環環境測試後，進行表面硬度值檢測、掃描式電子顯微鏡觀測、拉拔強度試驗、壓剪試驗、抗壓試驗與抗彎試驗，利用上述測試環境與試驗結果來評估碳纖維補強木構件之效能及耐久性；另外，再製作抗彎試體與大型抗壓試體進行碳纖維貼覆工程，改成塗佈兩次底漆來確認木構件是否會因底漆塗佈的次數，而影響碳纖維補強的效果。 由試驗結果得知，木構件貼覆碳纖維貼片能增加壓剪、抗壓與抗彎試體的強度，尤其是塗佈兩次底漆後更能增加補強的效果，顯示木構件會因塗佈兩次底漆而增加碳纖維貼片的黏結性；經上述兩種環境測試後得知，壓剪、抗壓及抗彎試體強度會因補強層數的增加而增加，而拉拔及壓剪試體會受到環境影響而降低強度。 |
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| 摘要(英)： | ||
| Recently, repair and retrofit using CFRP of high strength in Civil Engineering Construction is already developed and applied in relative theory and construction around the world. However, the research of retrofit wooden structure using CFRP is not much. The study in durability aspect is less and moreover, has not proceeded appropriately. This research is to discuss the durability of retrofit wooden members using CFRP. In order to assure the durability, wooden member specimens（cryptomeria japonica）wrapped CFRP sheets which were subjected to two different environments including sea water dry-wet cycling and freeze-thaw cycling were tested on surface hardness, SEM observation, pull-out strength, compressive shear strength, compressive strength and flexural strength tests. After the above environment conditions and tests, the evaluation of the effect and the durability of wooden members wrapped with CFRP sheets can be made. Finally, bending and full-size compressive specimens were painted two layers resin but don’t run the environment test. Throughout the test, it can compare if the wooden members painted two layers resin before wrapping with CFRP will increase the effect of retrofit. Results show that wooden members wrapped with CFRP can increase strength, especially when painting two layers resin. After environment test, it shows good bonding between wooden members and CFRP. And strength of compressive shear, compressive or flexural specimens does not decrease by retrofitting layers but decrease strength of pull-out or compressive shear ones. |
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| 檔案： | 沒有相關檔案 | |
| 相關連結： | http://ethesys.lib.cyut.edu.tw/ETD-db/ETD-search-c/view_etd?URN=etd-0816104-164209 | |