碳纤维布加固钢筋混凝土短柱抗剪承载力与延性的影响因素分析

Analysis of factors affecting shear strength and ductility of reinforced concrete short columns with carbon fiber sheet

通过对九根钢筋混凝土短柱在周期反复荷载作用下受力性能的试验研究,验证了使用碳纤维布加固钢筋混凝土短柱,能够提高抗剪承载力,改善短柱的变形性能和延性,并分析了剪跨比、轴压比、碳纤维布强度及包裹层数、混凝土强度等因素对抗震加固效果的影响．

The bearing performance of nine reinforced concrete short columns under cyclic loading was tested. The experimental results show that the new method of using continuous carbon fiber sheet（CFS） on strengthening reinforced concrete short columns can increase their shear strength and improve their deformation capability and ductility. At the same time, the factors affecting the effectiveness of seismic strengthening of reinforced concrete short columns, such as the shear span ratio, axial compression ratio, tensile strength of CFS ,the number of CFS layers and concrete strength are analyzed.