Deflection Behavior of Concrete Members Reinforced with FRP Bars

FRP-보강근 콘크리트 부재의 처짐 거동

  • Choi, Bong-Seob (Department of Architectural Engineering, Chungwoon University)
  • 최봉섭 (청운대학교 건축공학과)
  • Received : 2010.11.23
  • Accepted : 2011.02.10
  • Published : 2011.02.28


The effective moment of inertia revising the expression proposed by Branson has been used in ACI 440.1R-06 design guide for calculating deflections of FRP-reinforced concrete members. However, its adequacy has been questioned by several researchers. The propose of this study is to provide fundamental data for the rational design of deflection by the comparison of the experimental results obtained from twelve specimens with rectangular section and nine specimens with T-shaped section to the theoretical results. As a result, it found that calculated results for specimens with rectangular section were underestimated comparing to test results, while calculated results for specimens with T-shaped section were overestimated comparing to test results.


Deflection;Fiber Reinforced Polymer;Effective Moment of Inertia;Concrete;Tensile Stiffness;Modulus of Elasticity


Supported by : 한국연구재단


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