臺灣博碩士論文加值系統

後置式錨栓（Post-installed Anchor）為化學錨栓（Chemical Adhesive Anchors）與機械錨栓（Mechanical Anchors）組成。在工程實務上錨栓用於結構修建補強居多，藉由錨定系統傳遞應力，後置式錨栓鑽孔位置可以自由調整，在施工便利性與機動性方面都比預埋式錨栓優異。
本研究採M12化學錨栓、機械式1/2＂膨脹錨栓(drop-in anchor)及機械式旋入錨栓(Concrete screws)為研究錨件，試驗規劃分為兩部份，第一部份錨栓基本試驗、不同環境（乾燥、潮濕、過有效期限）抗拉試驗、抗剪試驗及抗扭試驗；第二部份錨栓於潛變之工程特性。
本研究參考ASTM E488-96、ASTM E1512-01、ICC AC58、ICC AC308等規範，化學錨栓執行乾燥、潮濕及過有效期限植筋膠條件下進行抗拉試驗比較，在潮濕條件比乾燥條件下抗拉強度約降低15.6%。化學錨栓在使用過期植筋膠植筋下，抗拉強度並沒有影響。機械式膨脹錨栓在執行抗拉試驗時，平均約在極限抗拉強度63%會產生滑動現象。機械式旋入錨栓抗拉破壞面積，大於ASTM所規定標準的4倍寬上下。
在抗剪試驗化學錨栓、膨脹錨栓及機旋入錨栓都為錨栓剪斷，唯膨脹錨栓在剪斷前會使混凝土表面有些許的鏟破現象。化學錨栓與旋入錨栓通過200N-m抗扭強度，尚未被扭斷或拉出，則膨脹錨栓抗扭強度約為78N-m失去抗扭能力。根據ICC-ES308規定潛變荷載為抗拉強度55%，觀察對數座標應變曲線。

Post-installed anchors include chemical adhesive anchors and mechanical anchors. The post-installed anchor is relatively easier than pre-installed anchor due to on-site construction requirement during installation.
M12 chemical anchor, one a half inch mechanical expansion anchor bolt (drop-in anchor), and M12 mechanical screw-in Anchor (Concrete screws) were used in the study. ASTM E488-96, ASTM E1512-01, ICC AC58, ICC AC308 are the reference standards. A comparison tensile test was conducted in dry and wet conditions for the chemical anchor. Tensile test using expired chemical grout was also performed to evaluate the aging behavior of the chemical bonding agent. The tensile strength for the chemical anchor in wet condition was about 15.4% lower than the dry condition. The tensile strength for those anchors installed using expired bonding agent showed no influence. Sliding failure occurred at the interface between anchor and concrete at near 63% of its ultimate tensile strength for the test expansion anchors. The diameter of the concrete failure cones for the screw-in anchor were extended around 4 times of its installation depth which is wider than the data showed in ASTM standard.
The shear strength for chemical anchor, expansion anchor bolt, and screw-in anchor was controlled by the shear strength of steel bars. Minor concrete compression failure was also observed near the edge of steel bar during the shear test of screw-in anchor. No torsion failure was observed at 200 N-m torque force for the chemical anchor and screw-in anchor. However, the average torque strength was 78 N-m for the expansion anchor. According to the ICC AC308 standard, 55% UTS tensile force was used for the creep test for the chemical anchor. No creep failure and linear creep strain curve in semi-log scale were observed for the creep tests.

摘 要....................................................II
Abstract..................................................IV
謝誌......................................................VI
目錄.....................................................VII
圖目錄.....................................................XI
表目錄....................................................XIV
第1章緒論...................................................1
1.1前言....................................................1
1.2研究動機與目的............................................1
1.3研究內容.................................................1
1.4論文架構.................................................3
第2章文獻回顧................................................4
2.1錨栓介紹.................................................4
2.2化學錨栓.................................................5
2.2.1樹脂................................................5
2.2.2聚合物分類...........................................5
2.2.3硬化劑...............................................5
2.2.4膠化時間.............................................6
2.3錨栓相關規範..............................................7
2.3.1參考規範.............................................8
2.4錨栓破壞模式.............................................11
2.5影響錨栓承載力之因素......................................12
2.6國內外相關研究...........................................15
2.6.1屏科前人研究.........................................15
2.6.2錨栓間距、埋設深度、邊距強度、混凝土強度之影響性............17
2.6.3抗拉速率影響性.......................................20
2.7工程案例................................................20
第3章試驗儀器與方法..........................................22
3.1研究流程................................................22
3.2試驗材料................................................24
3.3試驗規劃................................................25
3.3.1試體尺寸............................................26
3.3.2埋入深度及邊距.......................................28
3.4錨栓安裝流程.............................................29
3.5試驗儀器與設備...........................................31
3.5.1 電子游標卡尺..........................................31
3.5.2 電鑽................................................31
3.5.3鑽孔固定器............................................32
3.5.4空壓機................................................32
3.5.5混凝土抗壓機...........................................33
3.5.5室外抗拉試驗...........................................34
3.5.6.1自動讀數系統.......................................35
3.5.6.2位移計（LVDT）....................................36
3.5.6.3荷重元（Load Cell）...............................37
3.5.6.4油壓千斤頂........................................38
3.5.6.5電動油壓泵浦.......................................38
3.5.6.6油壓控制器........................................39
3.5.7室外抗剪試驗...........................................39
3.5.8抗扭試驗..............................................41
3.5.9潛變試驗..............................................42
第4章試驗結果與分析..........................................44
4.1基本試驗................................................44
4.2抗拉試驗................................................45
4.2.1 Type-A錨栓於不同環境植筋抗拉試驗........................45
4.2.2 Type-A不同加載方式抗拉試驗.............................46
4.2.3三種錨栓抗拉特性比較....................................47
4.3抗剪試驗................................................48
4.4抗扭試驗................................................49
4.5潛變試驗................................................51
第5章結論與建議.............................................53
5.1結論...................................................53
5.2建議...................................................54
參考文獻...................................................55
附錄A Type-A抗拉破壞型......................................58
附錄B Type-C抗剪破壞型式....................................59
作者簡介...................................................60
全文完.....................................................61

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