Tension Stiffening and Crack Formation in Reinforced Concrete Members with Fiber-Reinforced Polymer Sheets
Publication: Journal of Structural Engineering
Volume 129, Issue 6
Abstract
Models to estimate crack spacings and tension stiffening effects in reinforced concrete (RC) members with externally bonded fiber-reinforced polymer (FRP) sheets are presented. Due to the lack of experimental evidence on the tension stiffening effect of FRP sheeting, a theoretical approach based on the concept of tension chords is introduced. Crack formation and the tension stiffening of tension chords with FRP sheets are subjected to parametric analyses using bond stress-slip relations. The analytical results are then reduced into simple model equations. In addition to the FRP sheet, the bond characteristics between steel bars and concrete is also modeled according to a concept of average bond. These models are incorporated into the distributed stress field model, enabling reasonable estimations of the crack widths and the tension stiffening effects in RC members with the FRP sheets.
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References
Bentz, E. C. (1999). “Sectional analysis of reinforced concrete structures.” PhD thesis, Dept. of Civil Engineering, Univ. of Toronto, Toronto.
Comité Euro-International du Beton-Fédération International de la Precontrainte (CEB-FIP). (1978). Model code for concrete structures: CEB-FIP international recommendations, 3rd Ed., Comité Euro-International du Béton, Paris, 348.
Japanese Society of Civil Engineering (JSCE). (2001). “Recommendations for upgrading of concrete structures with use of continuous fiber sheets.” Japanese Society of Civil Engineering, Tokyo, Japan.
Kaufmann, W., and Marti, P.(1998). “Structural concrete: Cracked membrane model.” J. Struct. Eng., 124(12), 1467–1475.
Muguruma, H., Morita, S., and Tomita, K.(1967). “Fundamental study on bond between steel and concrete.” J. Arch. Inst. Jpn., 131, 1–8, (in Japanese).
Nakaba, K., Kanakubo, T., Furuta, T., and Yoshizawa, H.(2001). “Bond behavior between fiber-reinforced polymer laminates and concrete.” ACI Struct. J., 98(3), 359–367.
Sato, Y., Katsumata, H., and Kobatake, Y. (1997a). “Shear strengthening of existing reinforced concrete beams by CFRP sheet.” Proc., 3rd Int. Symposium FRP Reinforcement for Concrete Structures, Japan Concrete Institute, Spporo, Japan, 507–514.
Sato, Y., Kimura, K., and Kobatake, Y.(1997b). “Bond behavior between CFRP sheet and concrete (Part 1).” J. Struct. Const. Eng., Arch. Inst. Jpn., 500, 75–82.
Ueda, T., Sato, Y., and Asano Y. (1999). “Experimental study on bond strength of continuous carbon fiber sheet.” Proc., 4th Int. Symposium FRP Reinforcement for Concrete Structures, American Concrete Institute, Detroit, 407–416.
Vecchio, F. J.(2000). “Disturbed stress field model for reinforced concrete: Formulation.” J. Struct. Eng., 126(9), 1070–1077.
Vecchio, F. J.(2001a). “Disturbed stress field model for reinforced concrete: Implementation.” J. Struct. Eng., 127(1), 12–20.
Vecchio, F. J.(2001b). “Disturbed stress field model for reinforced concrete: Validation.” J. Struct. Eng., 127(4), 350–358.
Vecchio, F. J., and Collins, M. P.(1986). “The modified compression-field theory for reinforced concrete elements subjected to shear.” ACI Struct. J., 83(2), 219–231.
Wong, R. (2001) “Towards modeling of reinforced concrete members with externally-bonded fibre reinforced polymer (FRP) composites.” MASc thesis, Univ. of Toronto, Toronto.
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Information
Published In
Journal of Structural Engineering
Volume 129 • Issue 6 • June 2003
Pages: 717 - 724
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Oct 25, 2001
Accepted: Jul 29, 2002
Published online: May 15, 2003
Published in print: Jun 2003
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