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通过8组CFRP布约束混凝土棱柱体试件的轴心受压试验,研究其受力性能。通过分析碳纤维布加固量、粘贴方式、纤维布条带宽度和间距等不同试验参数对约束效果的影响,推导验证CFRP约束混凝土棱柱体的应力-应变关系模型。分析结果表明:各种形式碳纤维包裹的混凝土棱柱体的承载力都有一定程度的提高,延性增大。
The axial compressive tests of 8 CFRP sheets constrained concrete prismatic specimens were carried out to study their mechanical properties. The stress-strain relationship of CFRP-confined concrete prism was deduced by analyzing the influence of different test parameters on the restraint effect, such as the amount of reinforcement, the method of affixing, the width and distance of the fiber cloth. The analysis results show that the bearing capacity of various forms of carbon fiber wrapped concrete prism increases to a certain degree and the ductility increases.