臺灣博碩士論文加值系統

FRP貼片對R.C樑撓曲補強之研究，一般公認最弱之一環為貼片與混凝土介面間之黏結能力，本文為從事預力玻纖之補強，該介面承受之力量將更大，因此介面將更容易破壞。本文研究主旨之一，在探討增強介面間黏結能力之方式，並進而應用於對R.C.樑結構之補強。本文建議之U型包覆間接受力方式，經由試驗證實有效，純粹貼片補強的樑經過U型貼片包覆後，極限載重可提高12.8﹪；而對於施加預力玻纖的樑而言，經過U型貼片包覆後，極限載重可提高11﹪。另外，預力玻纖補強樑之研究尚在試驗室階段，目前試驗室施加預力之方法，事實上在工地現場並不可行，本文研究主旨之二，即在開發預力玻纖現地工法，此工法可以在樑下直接黏貼預力玻纖，並利用棉線綁紮可以將預力玻纖黏貼在已拱起的樑上，試驗證實該工法確實可將樑分次拱起，達到分次施加預力之效果。

It is generally acknowledged that the bonding strength on the interface between fiber and concrete is the major problem in the research on the strengthening of R.C. beams using FRP. Since this paper conducts research regarding the strengthening using prestressed fiber, the interface problem is even more critical. One of the major topics of the study is to develop and propose a bonding way by which the bonding strength can be improved. Experiments show that the proposed way is effective. On the other hand, since the strengthening using prestressed fiber is still at the stage of testing in laboratories, the way to prestress the fiber used in the laboratories is actually not applicable on working sites. The other major topic of the study is to develop a prestressing method workable on working sites. According to this method, the prestressing and bonding work can be conducted under the bottom of the beams. The prestressed fiber can stick to the cambered beams through tying them together with cotton threads. Experiments indicate that the proposed method can camber up beams step by step and make them behave just like the traditional prestressed beams.

摘 要 I
ABSTRACT II
目 錄 III
表 目 錄 VII
圖 目 錄 VIII
照 片 目 錄 X
符號說明表 XII
第一章 前 言 1
1-1 緒論 1
1-2 研究動機 1
1-3 研究範圍和目的 2
1-4 本文架構 2
第二章 文 獻 回 顧 4
2-1 樑構件撓曲補強方法 4
2-2 以FRP對樑構件做撓曲補強 7
第三章 貼片補強之理論基礎 11
3-1 材料性質 11
3-1-1 混凝土性質 11
3-1-2 鋼筋性質 12
3-1-3 GFRP玻璃纖維性質 12
3-2 混凝土之撓曲開裂彎矩 12
3-3 樑構件之理論瞬時撓度 12
3-4 預力貼片補強之理論拱勢 14
3-4-1 一層預力玻纖補強樑（TM）之理論拱勢 14
3-4-2 U形貼片包覆加一層預力玻纖補強樑（TFUM）之理論拱勢 14
3-4-3 U形貼片包覆加二層預力玻纖補強樑（T2FUM）之理論拱勢 15
3-4-4 U形貼片包覆加三層預力玻纖補強樑（T3FUM）之理論拱勢 17
3-5 基本假設 18
3-6 理論降伏彎矩M 18
3-6-1 參考樑（M）之理論降伏彎矩 18
3-6-2 一層玻纖補強樑（FM）之理論降伏彎矩 20
3-6-3 U形貼片包覆加一層玻纖補強樑（FUM）之理論降服彎矩 22
3-6-4 一層預力玻纖補強樑（TM）之理論降伏彎矩 24
3-6-5 U形貼片包覆加一層預力玻纖補強樑（TFUM）之理論降伏彎矩 26
3-6-6 U形貼片包覆加二層預力玻纖補強樑（T2FUM）之理論降伏彎矩 28
3-6-7 U形貼片包覆加三層預力玻纖補強樑（T3FUM）之理論降伏彎矩 30
3-7 矩形樑理論撓曲強度 33
3-7-1 參考樑（M）之理論撓曲強度 33
3-7-2 一層玻纖補強樑（FM）之理論撓曲強度 34
3-7-3 U形貼片包覆加一層玻纖補強樑（FUM）之理論撓曲強度 36
3-7-4一層預力玻纖補強樑（TM）之理論撓曲強度 38
3-7-5 U形貼片包覆加一層預力玻纖補強樑（TFUM）之理論撓曲強度 40
3-3-6 U形貼片包覆加二層預力玻纖補強樑（T2FUM）之理論撓曲強度 42
3-7-7 U形貼片包覆加三層預力玻纖補強樑（T3FUM）之理論撓曲強度 44
第四章 試驗計劃 47
4-1 試驗目的 47
4-2 試驗設備 47
4-2-1 貼片與混凝土介面黏結試驗之實驗設備 47
4-2-2 貼片補強樑構件試驗之實驗設備 48
4-3 試驗材料 49
4-3-1 貼片與混凝土介面黏結試驗材料 49
4-3-2 貼片補強樑構件試驗材料 49
4-4 試體規劃 50
4-4-1 貼片與混凝土介面黏結試驗之試體規劃 50
4-4-2 貼片補強樑構件試驗之試體規劃 51
4-5 試體製作程序 52
4-5-1 貼片與混凝土介面黏結試驗之試體製作 52
4-5-2 貼片補強樑構件試驗之試體製作 53
4-6 玻璃纖維補強作業程序 53
4-6-1 一般混凝土樑之補強作業程序 53
4-6-2 實驗室中單層預力貼片補強U形片包覆樑試體（TFUM）之補強作業程序 54
4-6-3 工地現場預力玻纖工法之研發 55
4-7 試驗步驟 56
4-7-1 貼片與混凝土介面黏結力試驗 56
4-7-2 貼片補強樑構件試驗 57
第五章 試驗結果之分析與討論 58
5-1 貼片與混凝土介面黏結力試驗結果之分析與討論 58
5-2 貼片補強樑構件試驗結果之分析與討論 59
5-2-1 玻璃纖維補強試體的載重-變位曲線 59
5-2-2 一層玻纖補強樑（FM）試驗結果之分析與討論 60
5-2-3 U形貼片包覆加一層玻纖補強樑（FUM）之試驗結果與比較 61
5-2-4 U形貼片包覆加一層預力玻纖補強樑（TFUM）之試驗結果與比較 62
5-2-5 一層預力玻纖補強下U形貼片包覆的影響 63
5-3建議之預力玻纖現地工法之試驗結果與比較 65
5-4 U型貼片下施加預力層數的影響 65
5-5 試驗結果與理論推導之比較 67
5-5-1 貼片與混凝土介面黏結試驗結果與理論推導之比較 67
5-5-2 貼片補強樑構件試驗結果與理論推導之比較 68
第六章 結論 69
6-1 結論 69
6-2 建議 69
參考文獻 71

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