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为研究玄武岩纤维的掺入对钢筋混凝土梁裂缝和变形的影响,以玄武岩纤维体积掺率和纤维长度为变化参数,设计制作5根试验梁,通过静载试验获得了玄武岩纤维混凝土梁在受力过程中的裂缝分布、裂缝宽度和跨中挠度等试验数据,并与普通混凝土梁进行对比。基于试验数据分析结果提出了玄武岩纤维混凝土梁最大裂缝宽度和短期刚度计算方法。结果表明:玄武岩纤维的掺入可有效阻止钢筋混凝土梁裂缝的开展并提高梁构件的延性。
In order to study the influence of basalt fiber incorporation on the crack and deformation of reinforced concrete beams, five test beams were designed and manufactured based on the volumetric and basalt fiber volumetric and fiber lengths. The basalt fiber reinforced concrete beams were subjected to static load The crack distribution in the process, the crack width and the mid-span deflection and other experimental data, and compared with ordinary concrete beams. Based on the experimental data analysis results, the calculation method of maximum crack width and short-term stiffness of basalt fiber reinforced concrete beam is proposed. The results show that the incorporation of basalt fiber can effectively prevent the cracks in the reinforced concrete beam and improve the ductility of the beam members.