HFRP加固钢筋混凝土梁抗弯性能研究(英文)

Research on Flexural Capacity of RC Beam Strengthened with Hybrid Fiber Sheets

在碳纤维和玻璃纤维混杂纤维布和预应力碳纤维加固混凝土梁试验研究成果的基础上,提出了用预应力混杂纤维加固混凝土结构的方法,并对预应力碳/芳纶纤维布加固梁的抗弯性能进行分析.利用预应力混杂纤维可以进一步提高纤维布的使用性能,减少变形并有效的抑制了裂缝的扩展,降低早期破坏的风险.混杂纤维的抗弯性能、延伸性能以及经济性均优于单一纤维.

On basis of the test results of beams strengthened with C/GFRP sheets and prestressed CFRP sheets, the paper analyses on the bending capacity of beams strengthened with prestressed C/AFRP sheets. A method of strengthen concrete structures with prestressed hybrid fiber sheets （composed of carbon fiber and aramid fiber）is proposed. The prestressed hybrid fiber cloth can be used to improve the performance of the RC beam to reduce distortion, effectively inhibit the expansion of the cracks and reduce the risk of early failure. Compared to a single fiber, hybrid fiber is an ideal reinforcement material, with significant economical and social benefits.