CFRP-混凝土界面粘結(jié)行為解析分析

1、 以假設(shè)碳纖維自由端的粘結(jié)滑移量為零，如本文所示的碳纖維的末端或加固梁構(gòu)件的中部 (由于試驗的對稱性滑移量為零，從而通過積分方式獲得每個測點處的總滑移量。根據(jù)模型 所提出的滑移量的不同情況來計算應力分布狀況。 (3從上述公式中很容易得出：減小粘結(jié)層的剛度，增大其厚度，和增長碳纖維布的粘 結(jié)長度均可以有效地減緩碳纖維端部的剪應力集中。 特別是在加固梁的工程中， 我們可以在 CFRP 端部施加錨固措施和在靠近端部逐漸減小 CFRP 的厚度等。 5 致謝 本文是在我的導師張雷順先生精心指導和大力支持下完成的，在此向他表示感謝。 參考文獻 1 D.L.Laura, M. Brian and N.Ant

2、onioBond of FRP laminates to concrete JACI Materials Journal2001， 98(3：256-264 2 K.Nakaba, T.Kanakabo, T.Furuta，et alBond behavior between fiber-reinforced polymer laminates and concrete JACI Structural Journal，2001，98(3：359-367 3 T.Maeda, Y.Asano, Y.Sato， et al A study on bond mechanism of carbon f

3、iber sheet A Proceedings of Third International Symposium of Non-Metallic (FRP Reinforcement for Concrete Structures CSapporo：Japan Concrete Institute，1997279-286 4 Y.Sato, K.Kimura, Y.KobatakeBond behavior between CFRP sheet and concrete(Part 1 JJournal of Structural and Construction Engineering，19

4、97，500：75-82 5 K.Brosens, G.D.VanAnchorage design for externally bonded carbon fiber reinforced polymer laminates AFarmington HillsProc. 4th International Symposium on Fiber Reinforced Polymer Reinforcement for Reinforced Concrete Structures CMichigan：ACI Scientific Publications，1999635-645 6 方恩權(quán)碳纖維

5、布與混凝土界面粘結(jié)性能試驗研究 D鄭州：鄭州大學，2005 7 Wu ZS， Yuan H， Niu HD Stress transfer and fracture propagation in different kinds of adhesive joints Journal of Engineering Mechanics J，2002，128(5: 562-573 8 牛赫東，吳智深預應力 FRP 纖維布粘結(jié)補強技術(shù)中的界面剪切應力傳遞 A岳清瑞第二屆全國 土木工程纖維增強復合材料(FRP應用技術(shù)學術(shù)交流會論文集 C 北京： 清華大學出版社， 2002 74-85 9 U.Neubau

6、er, F.S.Rosta´syDesign aspects of concrete structures strengthened with externally bonded CFRP plates A. Proc. 7th Int. Conf. on Struct. Faults and Repairs C，Edinburgh，Scotland：ECS Publications， 1997109-118. 10 過鎮(zhèn)海鋼筋混凝土原理 M北京：清華大學出版社，1999 11 B.Miller, A.NanniBond between CFRP sheets and concret

7、e AProceedings of ASCE 5th Materials Congress CCincinnati，Ohio，L.C. Bank，1999240247 12 楊勇新 碳纖維布與混凝土的粘結(jié)性能及其加固混凝土受彎構(gòu)件的破壞機理研究 D 天津： 天津大學， 2001 13 Chen JF，Teng JGAnchorage strength models for FRP and steel plates bonded to concrete JJournal of Structural Engineering，2001，127(7: 784-791 14 Lu XZ， Teng JG

8、， Ye LP， et al Bond-slip models for FRP sheet/plate-to-concrete interfaces A Proceeding 2nd International Conference of advanced polymer composites for structural applications in construction (ACIC2004 CCambridge, England：Woodhead Publishing Limited，2004152-161 -6- Analysis on the Bond Performance o

9、f CFRP-Concrete Fang Enquan1 Zhang Leishun2 1 Department of Geotechnical Engineering, Tongji University, Shanghai, PRC, 200092 2. School of Environment and Water Conservancy, Zhengzhou University, Zhengzhou, PRC, 450002 Abstract The key to engineering and experiment is the bond performance between t

10、he CFRP and the concrete The paper analyzes the bond-slip model for the CFRP-concrete interface from the theoretical viewpoint and deduces the effective bond length and the bond stress formulaCompared with the results of experiments and other documents, the values calculated by the effective bond length formulas were found to closely match with the results of experimentsThe amendments of the bond stress formulas were discussed further according to th