【摘要】 目的研究BFRP作为混凝土结构增强材料替代钢筋的设计与应用.方法根据BFRP筋的力学特性,结合钢筋混凝土受弯构件的基本理论,基于有限元结构计算方法,借助AD INA计算机程序对BFRP加筋混凝土简支梁抗弯性能进行有限元分析.结果BFRP加筋混凝土梁荷载-挠度实测与模拟曲线整体走势基本相同;相同荷载时模拟挠度值普遍比实测值大,输入的各项参数均为规范值,说明规范中所给值略为保守;BFRP加筋混凝土梁N2/N1值为1.17、1.16、1.12.结论建议制造出更好的非剥离BFRP筋,使之与混凝土之间有足够的粘结强度.由于BFRP筋弹性模量较小对实际工程是不利的,建议设计时作为预应力筋使用.更多还原

【Abstract】 This paper researches on the design and application of concrete beams reinforced by BFRP that serve as a reinforcing material instead of steel.According to the mechanical properties of BFRP,by taking advantage of ADINA programs,the bending property of the beams reinforced by BFRP is analyzed with the basic theory of concrete beams and FEM.Load-deflection test results of the BFRP reinforced concrete beams are as same as the overall trend of simulation curve generally.The simulated deflection is bigger than the measured one at the same load,for the parameter inputs are specification values,showing that the digitals in the specifications are conservative.The value of N2/N1 is 1.17,1.16,1.12 respectively.Therefore,better non-peeling BFRP rebars should be made to ensure adequate bond strength with the concrete,which contribute much to the application of BFRP.The small module produces negative effects during the actual work,so BFRP should be used as pre-stressing force on design.更多还原