Study on shear behavior of FRP strengthened concrete beams

3rd International Conference on Energy Materials and Environment Engineering

能源学;生态环境科学

Zhao, J.K.^1 ; Xu, X.S.^1

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

250022, China^1

关键词: Deformation capacity;    Engineering safety;    FRP reinforcement;    Frp strengthened concrete beams;    Reinforcement method;    Shear bearing capacity;    Shear behavior;    Stress characteristics;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/61/1/012062/pdf
DOI  :  10.1088/1755-1315/61/1/012062

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

There are many researches on concrete bending beams reinforced with FRP, and the beam section of the bending strength is enhanced, it is necessary to carry out an oblique section bearing capacity review, if the bearing capacity is insufficient, it is also necessary to strengthen, so as to ensure the ductility of the beam and meet the needs of Engineering safety. In this paper, four concrete beams strengthened with different fibers (CFRP, HFRP and GFRP) were used to study the stress characteristics, failure forms, reasonable reinforcement methods, beam strain conditions, bearing capacity, stiffness and deformation capacity of shear behavior of concrete beams strengthened with different fibers and different forms of reinforcement. The experimental results showed that the FRP reinforcement can not only improve the shear bearing capacity and ultimate deformation of beam, but also increase the stiffness of the beam, reduce the bending deformation under the same load beam, and delay the extension of diagonal cracks.