Computers and Concrete

  • 제2권3호
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  • Pages.177-188
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  • 2005
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  • 1598-8198(pISSN)
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  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Inelastic analysis of concrete beams strengthened with various fiber reinforced polymer (FRP) systems

  • Terro, M.J. (Civil Engineering Department, Kuwait University) ;
  • El-Hawary, M.M. (Kuwait Institute for Scientific Research) ;
  • Hamoush, S.A. (Architectural Engineering, Department, A & T State University)
  • 투고 : 2004.10.27
  • 심사 : 2005.05.02
  • 발행 : 2005.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper presents a numerical model developed to evaluate the load-deflection and moment-curvature relationship for concrete beams strengthened externally with four different Fiber Reinforced Polymer (FRP) composite systems. The developed model considers the inelastic behavior of concrete section subjected to a combined axial force and bending moment. The model accounts for tensile strength of concrete as defined by the modulus of rupture of concrete. Based on the adopted material constitutive relations, the model evaluates the sectional curvature as a function of the applied axial load and bending moment. Deflections along the beam are evaluated using a finite difference technique taking into account support conditions. The developed numerical technique has been tested on a cantilever beam with a transverse load applied at its end. A study of the behavior of the beam with tension reinforcement compared to that with FRP areas giving an equivalent ultimate moment has been carried out. Moreover, cracking of the section in the tensile region at ultimate load has also been considered. The results indicated that beams reinforced with FRP systems possess more ductility than those reinforced with steel. This ductility, however, can be tuned by increasing the area of FRP or by combining different FRP layers.

키워드

참고문헌

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피인용 문헌

  1. Experimental and numerical investigations of the influence of reducing cement by adding waste powder rubber on the impact behavior of concrete vol.11, pp.1, 2005, https://doi.org/10.12989/cac.2013.11.1.063