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采用纤维增强混凝土是混凝土改性的一种重要手段。本文在普通钢筋混凝土框架结构理论和抗震理论的基础上,采用钢纤维-聚丙烯纤维以及钢纤维-聚丙烯仿钢纤维的混杂纤维材料,将各种纤维体积掺量的混凝土应用于混凝土构件中,以普通混凝土以及低掺量的钢纤维混凝土作对比,研究钢筋混凝土梁的受剪承载力、破坏形态以及裂缝发展与分布情况,分析不同掺量纤维对于钢筋混凝土梁的纯弯段以及剪跨区的变形、裂缝、挠度等的影响。通过试验,优选出良好配比的体积掺量用于现场施工中。
The use of fiber reinforced concrete is an important means of concrete modification. Based on the theory of ordinary reinforced concrete frame structure and the anti-seismic theory, this paper uses the hybrid fiber materials of steel fiber-polypropylene fiber and steel fiber-polypropylene imitation steel fiber to apply concrete with various fiber volume content in concrete members , The ordinary concrete and low-volume steel fiber reinforced concrete are compared to study the shear capacity and failure modes of the reinforced concrete beam and the development and distribution of the cracks. The analysis of the effect of different fiber content on the pure bending section of the reinforced concrete beam, District deformation, cracks, deflection and other effects. Through experiments, a good proportion of the volume of the preferred volume for on-site construction.