【摘要】 为了对8根钢筋混凝土短柱进行抗压加固试验研究,采用碳纤维和玻璃纤维两种材料分别对钢筋混凝土柱进行抗压加固,采用碳纤维以条带螺旋缠绕方式对2根柱进行加固,采用玻璃纤维分别以4层和2层全包裹方式加固了4根柱,其余2根柱为对比试件.采用分级单调加载方式对所有柱进行轴心受压试验,在加载过程中,量测了试验柱的应变、变形和极限承载力.结果表明,采用纤维对钢筋混凝土柱进行加固后,其抗压强度明显提高,延性明显加大,且抗压刚度也有一定提高.更多还原

【Abstract】 To investigate the compressive behavior of 8 reinforced concrete (RC) columns,carbon fiber reinforced plastic (CFRP) and glass fiber reinforced plastic (GFRP) were adopted to strengthen these columns. 2 RC cloumns were covered by CFRP in form of strips helically,4 columns were wraped with GFRP by 2 layers and 4 layers respectively,and 2 columns were not strengthened. Tests on axial compressive load for all 8 columns were conducted employing graded monotonic loading. The strain and deformation were measured,and the ultimate load carrying capacity was studied. Results show that the compressive bearing capacity and ductility of RC columns strengthened by CFRP or GFRP are increased obviously,and the compressive stiffness of them is improved as well.更多还原