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文章针对玄武岩纤维布加固钢筋混凝土柱,进行轴心受压性能研究,运用正交试验法,选择L9(33)正交表,考虑纤维布种类、包裹层数以及箍筋间距3个影响因素,设计制作了9个试件。研究结果表明:玄武岩纤维加固后柱轴心抗压承载力平均提高20%,是碳纤维布加固效果的80%;加固后柱轴压极限承载力的提高幅度随纤维包裹层数增加而上升,但提高幅度与包裹层数不呈线性关系;在加载达到柱极限承载力的70%之前,纤维布对柱的约束作用并不显著,之后纤维布的约束作用剧增,较大地延缓了柱的破坏。
In this paper, basalt fiber reinforced concrete (CFRP) columns are reinforced and tested for axial compression. By using orthogonal test, the L9 (33) orthogonal table is selected to consider three influencing factors: the type of fiber cloth, the number of wrapping layers and the spacing of stirrups. Design and manufacture of 9 specimens. The results show that the axial compressive bearing capacity of basalt fiber reinforced by basalt fiber is increased by 20% on average, which is 80% of the reinforcement effect of CFRP. The increase of ultimate bearing capacity of column axial compressive strength increases with the number of fiber wrapping layers after reinforcement There was no linear relationship between the improvement and the number of layers. Before the loading reached 70% of the ultimate load, the restraint of the fabric was not significant. After that, the constraint of the fabric increased sharply and the column was greatly delayed .