臺灣博碩士論文加值系統

本研究利用反射式光彈法，量測鋼筋因腐蝕而產生與混凝土間界面上之膨脹應力，再配合數位影像處理技術，以及克利金線性內插法預測彩色光彈應力條紋級次與等傾線角，進而獲取量測範圍內各資料點之應力值及應力分佈情形，並將其轉換為造成混凝土開裂之膨脹應力。同時並以數值模式預測計算鋼筋不同腐蝕開裂階段產生之膨脹張應力，經比較後獲得相當一致之結果，也驗證了可以反射式光彈法長期監測及掌握鋼筋混凝土構件之腐蝕情況。

This study employed reflection photoelasticity to measure the bonding expansive stress on the interface between steel and concrete produced by corrosion. By combining digital image process technique and Kriging linear interpolation which predicted fringe order and isoclinics, this study further obtained information about stress distribution in the full field and transformed it into the bonding expansive stress resulting in concrete cracking. In addition, this study utilized the numerical model to predict and calculate the bonding expansive stress of steel during different corrosion cracking stages. The results of the measurement and calculation were consistent after comparison. This study also verified that reflection photoelasticity can be used for long-term monitoring the corrosion of reinforcement concrete structures.

中文摘要……………………………………………………………… I
英文摘要……………………………………………………………… II
誌謝…………………………………………………………………… III
目錄…………………………………………………………………… IV
表目錄………………………………………………………………… VII
圖目錄………………………………………………………………… VIII
符號表………………………………………………………………… XI
第一章 緒論………………………………………………………… 1
1-1 前言……………………………………………………………… 1
1-2 研究動機與目…………………………………………………… 1
1-3 研究範圍………………………………………………………… 2
第二章 文獻回顧…………………………………………………… 4
2-1 光彈法的發展………………………………………………… 4
2-2 光彈數位影像處理與條紋級次分析………………………… 5
2-3 鋼筋混凝土之腐蝕損傷……………………………………… 10
第三章 基本理論…………………………………………………… 16
3-1 光彈法原理……………………………………………………… 16
3-1-1 雙折射現象…………………………………………………… 16
3-1-2 應力－光學定律……………………………………………… 18
3-1-3 反射式光彈法………………………………………………… 21
3-2 數位影像處理…………………………………………………… 23
3-2-1 顏色模式……………………………………………………… 24
3-2-2 數位影像處理及濾波器之定義……………………………… 25
3-3 光彈條紋級次預測及應力計算………………………………… 27
3-3-1 克利金線性內插法…………………………………………… 28
3-3-2 光彈條紋應力計算…………………………………………… 28
3-4 腐蝕之基本理論………………………………………………… 29
3-4-1 腐蝕之基本定義……………………………………………… 29
3-4-2 電化學加速腐蝕之基本定義………………………………… 30
3-4-3 電化學腐蝕造成破壞之原因………………………………… 32
3-4-4 法拉第定理…………………………………………………… 32
3-4-5 混凝土破裂準則……………………………………………… 33
3-4-6 鋼筋腐蝕後之膨脹應力量測與計算………………………… 34
第四章 實驗與分析過程…………………………………………… 40
4-1 實驗計畫………………………………………………………… 40
4-2 實驗材料………………………………………………………… 40
4-3 實驗設備………………………………………………………… 41
4-4 試體製作………………………………………………………… 44
4-4-1 試體拌合程序………………………………………………… 44
4-4-2 試體澆置……………………………………………………… 44
4-5 光彈貼片之黏貼………………………………………………… 46
4-6 建立光彈條紋級次之RGB值…………………………………… 49
4-7 實驗方法………………………………………………………… 51
4-7-1 加速腐蝕實驗………………………………………………… 51
4-7-2 光彈條紋影像擷取過程……………………………………… 52
4-7-3 抗壓強度試驗………………………………………………… 52
4-8 數位影像處理…………………………………………………… 52
4-9 條紋判讀與應力計算…………………………………………… 55
第五章 結果與討論………………………………………………… 56
5-1 光彈條紋應力分析與計算結果………………………………… 56
5-2 腐蝕損傷鋼筋混凝土數值計算模式之結果…………………… 60
5-3 結果討論………………………………………………………… 61
第六章 結論與建議………………………………………………… 63
6-1 結論……………………………………………………………… 63
6-2 建議……………………………………………………………… 63
參考文獻……………………………………………………………… 65

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