CFRP加固黏土砖轴心受压柱研究

Research of Axially Loaded Brick Columns Strengthened by CFRP

基于碳纤维布加固实心黏土砖柱的试验研究与有限元分析,研究了碳纤维环箍加固的轴心受压实心粘土砖柱极限承载力及其受力性能,并分析了碳纤维布加固轴心受压粘土砖柱的受力特点及影响承载力、延性的因素。研究表明:碳纤维布提供的紧箍力使实心黏土砖柱的承载力和延性都得到较大提高。通过考察CFRP布加固的实心黏土砖柱的荷载-变形关系,CFRP的应力-应变发展,进一步证实了CFRP不对实心黏土砖柱加固的有效性。

The mechanical property of CFRP strengthens solid clay brick short column under axial compression was tested.And analytical models was studied through three-demensional nonlinear finite element analysis.The experimental and analysis results indicate that the confinement offered by CFRP can improve the strength and toughness of column greatly.Retrofitting performances of solid clay brick short columns strengthened with CFRP sheets was verified by analyzing load-deformation relations and the processes of stress-strain of CFRP.