为研究碳纤维布对H型钢部分包裹混凝土柱(PEC柱)在小偏心受压情况下的加固性能,共进行了10根试验柱的试验.试验柱分为两组,第-组和第二组各有5根试验柱,分别为偏心距30mm的受压柱和偏心距50mm的受压柱.其中两组中都有-根对比试验柱.试验结果表明,由于CFRP(碳纤维增强复合材料)布的约束作用,包裹CFRP布试验柱与对比试验柱对比,极限承载力提髙5.12%-9.89%;CFRP布的粘贴间距、粘贴层数对PEC柱承载力的影响,与各试验柱相互对比,随其粘贴间距的减小和粘贴层数的增加,PEC柱抗压承载力也分别有所提髙.证明CFRP布约束对提髙PEC柱抗压性能的有效性.最后,在试验的基础上,考虑不同影响因素来对轴力和弯矩计算公式进行参数修正,提供了包裹CFRP布后矩形截面PEC柱在小偏心受压情况下承载力的计算方法,计算公式得到的计算结果与试验结果吻合度较髙.
In order to research the reinforcing performance of carbon fiber cloth on H steel concrete column ( PEC c o lumn ) under small eccentric compression,ten specimens of the column were tested. The specimens were divided into two groups. Each group has 5 columns. The first group of columns was under the compression with 30 mm of eccentricity ,and the second group was under the compression with 50 mm of eccentricity. In each group,there was a column for contrast test.