GFRP管配筋混凝土抗弯刚度研究

On Flexural Stiffness of GFRP Tube Reinforced Concrete

根据GFRP管配筋混凝土构件的弯曲试验结果,分析配筋类型、构件尺寸、GFRP管厚度等参数对构件抗弯刚度的影响.根据试验结果,借鉴国内外技术规范,提出适用于GFRP管配筋混凝土构件的抗弯刚度修正公式.同时,采用修正公式对国内外文献中GFRP管配筋混凝土构件的抗弯刚度进行了计算,并与其试验抗弯刚度进行了对比,两者保持了较好的一致性.研究结果表明,抗弯刚度修正公式对GFRP管配筋混凝土构件在未来工程中的应用具有较好的参考价值.

Grounded upon the bending test results of reinforced concrete with GFRP tubes,the effects of the type of reinforcement,the size of components and the thickness of GFRP tubes on the flexural stiffness of components were analyzed in this paper.Referring to the test results and the technical specifications both at home and abroad,a modified formula for flexural stiffness of reinforced concrete with GFRP tubes was proposed.Meanwhile,the modified formula was used to calculate the flexural stiffness of GFRP tubes reinforced concrete components mentioned in domestic and foreign literatures;compared with the experimental flexural stiffness,the two are of good consistency.The analysis results show that the modified formula presented in this paper is applicable to the GFRP tubes reinforced concrete components in future projects.