臺灣博碩士論文加值系統

到目前為止FRP貼片對R.C樑撓曲補強之研究，主要是在樑試體的
拉力面貼上FRP纖維材料，來探討結構補強之後的載重行為和破壞模式‧
本文是以先施加預力的FRP纖維布黏結於傳統R.C樑底面，使其具有類
似預力樑的拱起型態，並探討其補強之後的載重行為和破壞模式，本
文另外以改變FRP貼片黏結角度方式來對樑進行剪力補強，探討角度
的變化對剪力補強的影響‧
研究結果顯示，在抗剪補強方面，黏結角度45度的FRP貼片所提升
的強度比垂直黏貼的FRP貼片為高，主要因為在剪力破壞時所形成的斜
張力正好由抗拉性佳的FRP纖維方向抵抗。
在預力纖維抗彎補強方面，預力GFRP確實使樑拱起，不但使R.C樑
之抗彎強度明顯提昇，其受力之變形也較無預力之纖維補強者為小。

Up to the present, most the researches involving the influence of FRP sheet on
the flexural strength mainly investigated the loading behavior and failure mechanism
after strengthening by binding FRP fabric material on the tested beams. However,
the tests carried out in this paper adhered the pre-stressed FRP sheets to the conventional
R.C. beams to form new beams which act like pre-stressed beams. This paper mainly
investigates the loading behavior and failure mechanism after this type of strengthening.
In addition, the paper also studies the influence of various angles of shear strengthening
sheets on the innovations of shear strength.
The test results indicate that in the shear strengthening the FRP sheets at the angle of
45 degree can increase the strength more than those at a vertical angle. It is mainly due
to that the diagonal tension caused by shear force can be resisted directly by the fabric
direction of FRP material.
Concerning the flexure strength of pre-stressed sheets, the pre-stressed GFRP arches
the beam and increases R.C. beam''s flexure strength in some case. The deformations of
the beams with pre-stressed GFRP sheets are smaller than those with regular sheets.

中文摘要 I
英文摘要 II
目錄 III
表目錄 V
圖目錄 VI
照片目錄 VII
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................................................................1
1-4本文架構............................................................................2
第二章 文獻回顧....................................................................3
2-1剪力及撓曲之補強方法....................................................3
2-2FRP之剪力補強..................................................................4
2-3 FRP之撓曲補強.................................................................5
第三章 貼片補強之理論分析.................................................8
3-1撓曲強度之基本假設.........................................................8
3-2T型樑和倒T型樑之理論撓曲強度.....................................8
3-3GFRP貼片應用於剪力補強之理論分析..........................11
3-4GFRP貼片應用於T型樑撓曲補強之理論分析................12
3-5PGFRP貼片應用於T型樑撓曲補強之理論分析..............18
3-6GFRP貼片應用於倒T型樑撓曲補強之理論分析............18
3-7PGFRP貼片應用於倒T型樑撓曲補強之理論分析..........19
第四章 試驗規劃與設備.........................................................22
4-1試驗目的.............................................................................22
4-2試驗儀器.............................................................................22
4-3材料性質.............................................................................23
4-4GFRP剪力補強試驗............................................................23
4-3-1 垂直式黏貼法.................................................................24
4-3-2 45度黏貼法.....................................................................24
4-5GFRP撓曲補強試驗............................................................25
4-5-1T型樑試體........................................................................25
4-5-2倒T型樑試體....................................................................27
第五章 實驗結果與討論..........................................................28
5-1 GFRP剪力補強試驗結果與討論.......................................28
5-1-1 垂直式黏貼法剪力補強試驗結果與討論.....................29
5-1-2 45度黏貼法剪力補強試驗結果與討論.........................29
5-1-3 垂直和45度兩種貼片試驗結果之比較.........................30
5-2 GFRP撓曲補強試驗結果與討論.......................................32
5-2-1 T型樑撓曲補強之試驗結果與討論...............................32
5-2-2 倒T型樑撓曲補強之試驗結果與討論...........................37
第六章 結論..............................................................................39
6-1 結論.....................................................................................39
6-2 建議.....................................................................................40
文獻回顧...................................................................................42

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