Study on crack development of concrete beams in bending reinforced with FRP bars

3rd International Conference on Energy Materials and Environment Engineering

能源学;生态环境科学

Pan, M.X.^1 ; Xu, X.S.^1

School of Civil Engineering and Architecture, University of Jinan, Jinan

250022, China^1

关键词: Calculation results;    Design suggestions;    Fiber reinforced polymer bars;    High-tensile strength;    Low elastic modulus;    Reinforcement ratios;    Serviceability limit state;    Ultimate limit state;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/61/1/012037/pdf
DOI  :  10.1088/1755-1315/61/1/012037

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The comparatively high tensile strength and low elastic modulus of fiber reinforced polymer (FRP) bars result in deflection and crack width requirements controlling the design of concrete beams reinforced with FRP bars. Consequently, when it comes to the design of such members, the deflection and crack width are first calculated at serviceability limit state, and then are checked at ultimate limit state. In this paper, five concrete beams reinforced with different FRP reinforcement ratios were tested and the crack development and pattern as well as the effect of reinforcement ratio on crack width and spacing were analyzed. The experimental results were compared with the calculation results using design guidelines recommended by Japan JSCE code, American ACI440.1R-03 code and China GB50608-2010 code. Several design suggestions were proposed for bending concrete beams reinforced with FRP bars.