期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2015
卷号：4
期号：4
页码：2250
DOI：10.15680/IJIRSET.2015.0404081
出版社：S&S Publications
摘要：Over the past few decades, concrete filled steel tubular (CFST) column plays an eminent role in theconstruction industry owing to its structural behaviour like large deformation and energy absorption capacity. But thesemembers get deteriorated due to the environmental effects like corrosion and ageing. The external strengthening ofusing fibre reinforced polymer (FRP) material is emerging as a new trend in enhancing the structural performance ofCFST members to counteract the drawbacks in using the past rehabilitation work. In this paper, an experimentalinvestigation has been carried out to investigate the behaviour of FRP strengthened slender circular CFST membersunder compression. The size of the specimens includes 42.4mm diameter, 3.2mm thickness and 1500mm height. In theexperimental work, three columns are externally bonded by 200mm width of CFRP strips with the spacing of 60mmand another three columns with 300mm width and 100mm spacing. Experiments are undertaken to examine theinteraction of FRP with CFST columns in terms of the failure modes, axial load Vs lateral deformation andenhancement in load carrying capacity. At the end, the results demonstrated that there is an improvement in thebehaviour and the load carrying capacity of CFST columns by strengthening those externally using FRP composites.
