碳纤维布-钢筋混凝土组合方柱的轴压试验

对纤维约束圆形截面混凝土柱的性能已有较多的研究，但我国大多数是使用方形柱或矩形截面柱，而对碳纤维布一钢筋混凝土组合方柱承压性能的研究相对较少。通过对该组合方柱的轴压试验，考虑碳纤维布间距和箍筋间距的变化对组合方柱破坏形态以及加固效果的影响，并绘制了荷载-应变试验曲线。结果表明：组合方柱的承载力提高效果明显；延性有较显著的改善；除个别柱外，碳纤维、混凝土和钢筋3者具有良好的变形协调性

The Load-Strain Test Curve of CFRP-RC Composite Square Columns

Many researches concentrate on the behavior of confined concrete columns with circular sections but the square and rectangle-section ones are mostly applied in China, and researches on bearing capacity of CFRP-RC composite square columns are comparatively few. Through compression tests, and taking into account the influence that spacing changing of fiber and stirrup has on failure form of composite square columns and its reinforcement, we adopt a load-strain test curve. The results indicate that the supporting capacity of CFRP-RC composite square columns enhances obviously; the ductility improves remarkably; and that, the carbon fiber the concrete and the steel bar have good distortion coordination except the very few ones.