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通过采用粘贴碳纤维布与增大截面法对损伤钢筋混凝土板进行加固试验,分析了不同配筋率对板的承载力、刚度的提高效果,结果表明:1相同荷载作用下,增大截面加固法对提高板的抗弯刚度效果更好;2两种加固方法都能较大程度提高板的承载力及刚度,但增大截面法对提高板的开裂荷载效果更明显,且随配筋率增大承载力及刚度提高越多;3采用增大截面法加固时,8的强度利用最充分,这与加固规范中规定的板的受力钢筋直径不应小于8mm相一致;4结合规范计算公式,得到计算值与试验值二者相差较小。
By using carbon fiber cloth and increasing section method to strengthen the reinforced concrete slab reinforcement test, analysis of different reinforcement ratio of the plate bearing capacity and stiffness of the results show that: the same load, the increase of section reinforcement method Which is more effective to improve the flexural rigidity of the plate. 2 Both methods can greatly improve the bearing capacity and stiffness of the plate, but the effect of increasing the cross-section method is more obvious for increasing the cracking load of the plate, Large capacity and stiffness to improve the more; 3 using the enlarged cross-section method of reinforcement, the strength of 8 to take full advantage of, which is reinforced with the provisions of reinforced board diameter of not less than 8mm consistent; 4 combined with the standard formula , There is little difference between the calculated value and the experimental value.