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論文中文名稱:化學植筋在低強度混凝土中之剪力行為研究 [以論文名稱查詢館藏系統]
論文英文名稱:A Study on Shear Behavior of Adhesive Anchors in the Low Strengt Concrete [以論文名稱查詢館藏系統]
院校名稱:臺北科技大學
學院名稱:工程學院
系所名稱:土木工程系土木與防災碩士班
畢業學年度:104
畢業學期:第二學期
中文姓名:許家銘
英文姓名:HSU, CHIA-MIN
研究生學號:103428001
學位類別:碩士
指導教授中文名:廖文義
口試委員中文名:廖文義、柴駿甫、蕭輔沛
中文關鍵詞:低強度混凝土、植筋、剪力、補強工法
英文關鍵詞:low strength concrete, chemical anchors, shear, retrofit, retrofitting method
論文中文摘要:植筋工程常被用於結構物補強中,如翼牆及剪力牆補強等工法中,藉由對既有結構體進行植筋,將補強結構體與既有結構體相連接,以期發展出良好的結構耐震行為。國家地震工程研究中心於校舍補強案例中,發現老舊校舍結構常有混凝土強度偏低的問題,其平均混凝土強度大約為17MPa,甚至有低至5MPa左右之案例,因此研究探討低強度混凝土中植筋剪力行與現有ACI混凝土設計規範之適用性為工程設計時需要之課題。
本研究在混凝土強度分別為5MPa、10MPa、15MPa之混凝土試體中,根據ACI規範建議的最小邊距及深度進行一系列的植筋及單向剪力測試,試體共計有184組,控制參數分別為深度、邊距和混凝土強度。試驗結果與依ACI規範計算值比較後,發現ACI計算值在強度10MPa和15MPa之試體仍偏保守,但在5MPa試體之試驗值則與計算值相當接近,故ACI規範中的錨錠計算公式應用在極低強度混凝土中可能會有不保守情況。另本實驗發現另一種破壞模式為鋼筋彎曲破壞,其強度介於邊距破壞與鋼筋剪斷之間,有別於ACI規範中所考慮之邊距、撬破和鋼筋剪斷三種破壞模式。
論文英文摘要:In order to increase seismic capability of structural system, retrofit techniques are usually applied. Traditional RC retrofit methods include adding RC shear wall, wing wall and RC jacketing. In addition to connect new structural members to old structural members anchor bolts (bar implant) are used. From the investigation results by NCREE, we can find that concrete strength of old school buildings is pretty low due to poor structural system and quality. Therefore, the behavior of post-installed anchors in low strength concrete is very important.
In this study, the low concrete strength are 5MPa,MPa,5MPa concrete specimen, according o the 180um edge distance and depth of ACI proposed a series of anchorage and shear test, a total of 1 groups. Control parameters are the depth, edge distance, and strength of concrete. The results of this experiment Comparison with the ACI Code calculated values found ACI calculated values remain prudence in strength 10MPa and 15MPa , but in the 5MPa calculated values is very close, so the ACI specification anchor formula used in low strength concrete may not be prudence. Another of the experiment found another failure mode of steel bending failure, the strength edge distance between destruction and cut steel, unlike the ACI specification considered in the edge distance, and cut steel pryout three kinds of failure modes.
論文目次:第一章 緒論 1
1.1 前言 1
1.2 研究內容與方法 2
第二章 文獻回顧 4
2.1 錨栓簡介 4
2.2 ACI 318剪力相關規範公式 6
2.3 參數設定 11
第三章 試體與夾具設計及測試規劃 12
3.1測試規劃 12
3.2鋼筋混凝土塊設計 12
3.3夾具設計 13
3.4試體製作 16
3.4.1 鋼筋混凝土版施作 16
3.4.2 化學錨栓之安裝 20
3.5測試佈置 24
3.6量測系統佈置 27
3.7測試步驟 31
第四章 試驗結果與討論 33
4.1 材料試驗 33
4.1.1 抗壓強度試驗 33
4.1.2 鋼筋抗拉強度試驗 39
4.2 破壞模式分析 42
4.2.1 植筋剪斷模式 42
4.2.2 邊距破壞模式 42
4.2.3 混凝土撬破破壞模式 42
4.2.4 鋼筋彎曲破壞模式 42
4.3 邊距控制實驗結果 43
4.3.1 混凝土強度5MPa實驗結果 43
4.3.2 混凝土強度10MPa實驗結果 56
4.3.3 混凝土強度15MPa實驗結果 71
4.4 深度控制實驗結果 86
4.4.1 混凝土強度5MPa實驗結果 86
4.4.2 混凝土強度10MPa實驗結果 98
4.4.3 混凝土強度15MPa實驗結果 110
第五章 論文討論與分析 123
5.1前言 123
5.2討論與分析 123
第六章 結論 128
6.1 前言 128
6.2結論 128
6.3建議 128
6.4 未來研究展望 129
參考文獻 130
附錄A 拉拔試驗圖片 132
附錄B ANSYS簡易分析 142
論文參考文獻:參考文獻 1. ACI Committee 318, ”Building Code Requirements For Structural Concrete and Commentary,” (ACI 318-14) American Concrete Institute, Farmington Hills, Mich., 2014, pp.213-311 2. ACI Committee 355, “Qualification of Post-Installed Adhesive Anchors in Concrete and Commentary (ACI355.4-11),” American Concrete Institute, Farmington Hills, Mich., 2011, 55 pp. 3. ASTM Committee E06, “Standard Test Methods for Strength of Anchors in Concrete Elements,” American Society for Testing and Materials E488-96, West Conshohocken, PA, 1996, 21 pp. 4. POWERS PE1000+ Instruction Card安裝指導書 5. ICC-ES Report ESR-2583, “Powers PE1000+ Adhesive Anchors in Craked and Uncreaked,” ICC-ES Evaluation Report, 2014. 6. ICC-ES Report ESR-2322, “HILTI HIT-RE 500-SD Adhesive Anchors in Craked and Uncreaked,” ICC-ES Evaluation Report, 2014. 7. Periskic, G., Ozbolt, J. and Eligehausen, R., “3D Finite Element analysis of stud anchors with large head and embedment depth”, in Engineering Fracture Mechanics 74(1), 2007, pp. 168-178. 8. Periskic, G., Ozbolt, J., Eligehausen, R.and Mayer, U., “3D FE analysis of anchor bolts with large embedment depths,” Institute of Construction Materials, Nolasoft - design office, University of Stuttgart, Stuttgart, Germany,2007. 9. Li, Y., Eligehausen, R. O?bolt, J. and Lehr, B., “Numerical Analysis of Quadruple Fastenings with Bonded Anchors,” ACI Structural Journal, V. 99, No. 2, March-April 2002. pp. 149-156. 10. Gesoglu, M., Ozturan, T., Ozel, M., and Guneyisi, E., “Tensile Behavior of Post-Installed Anchors in Plain and Steel Fiber-Reinforced Normal and High-Strength Concretes,”? ACI Structural Journal, V. 102, No. 2, March-April 2005. pp. 224-231. 11. Noel A. Zamora, Ronald A. Cook, Robert C. Konz, and Gary R. Consolazio, “Behavior and Design of Single, Headed and Unheaded, Grouted Anchors under Tensile Load,” ACI Structural Journal, V. 100, No. 2, March-April 2003. pp. 222-230. 12. Peter J. Carrato, Kurt W. Krauss, and Jai B. Kim,“Tension Tests of Heavy-Duty Anchors with Embedments of 8 to 19 Inches,” ACI Structural Journal, V. 93, No. 3, May-June 1996. pp. 1-9. 13. Christopher C. Higgins and Richard E. Klingner, “Effects of Environmental Exposure on the Performance of Cast-In-Place and Retrofit Anchors in Concrete,” ACI Structural Journal, V. 95, No. 5, September-October 1998. pp. 506-515. 14. R. A. Cook, D. M. Collins, R. E. Klingner, and D. Polyzois, “Load-Deflection Behavior of Cast-in-Place and Retrofit Concrete Anchors,” ACI Structural Journal, V. 89, No.6, November-December 1992. pp. 506-515. 15. ACI Committee 318, “Building Code Requirements for Structural Concrete (ACI 318-11) and Commentary,” American Concrete Institute, Farmington Hills, MI, 2011, 503 pp. 16. 中國土木水利工程學會混凝土工程委員會,「混凝土工程設計規範與解說(土木401-100)」,中國土木水利工程學會,台北,2011年。 17. 李曉盈,「後置式化學錨栓在低強度混凝土中之錨定行為」,碩士論文,國立 台灣大學土木工程研究所,台北,2013年。 18. 朱宗信,「化學黏著錨栓承受拉力與剪力作用之試驗研究」,碩士論文,國立成功大學土木工程研究所,台北,2007年。
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