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通过对不同模量碳纤维和玄武岩纤维混杂成的纤维板增强钢筋混凝土梁(C/BFRP混凝土复合梁)试验,研究不同混杂参数及预应力对复合梁受弯性能的影响,并对复合梁的承载能力、刚度、挠度及延性进行讨论。试验结果表明,预应力C/BFRP能有效提高钢筋混凝土梁的受弯承载能力,延缓梁裂缝的出现,提高梁的延性,同时复合梁屈服后有较高的二次刚度。
The effect of different miscellaneous parameters and prestressing on flexural behavior of composite beam was studied by testing the reinforced concrete beam (C / BFRP concrete composite beam) with different modulus of carbon fiber and basalt fiber mixed fiberboard, and the bearing capacity of composite beam , Stiffness, deflection and ductility are discussed. The experimental results show that prestressed C / BFRP can effectively improve the flexural bearing capacity of RC beams, delay the emergence of cracks in the beams and improve the ductility of the beams, while the composite beams yield higher secondary stiffness after yielding.