论文部分内容阅读
碳纤维和角钢约束混凝土可以显著提高其承载力和延性。在对已有的试验数据分析的基础上,研究碳纤维和角钢复合加固混凝土柱的约束机理和受力模型,引入有效约束区域的概念,分别提出碳纤维和角钢加固混凝土柱截面有效约束面积的计算方法。在此基础上,考虑碳纤维层数、角钢面积、纵向配筋、混凝土柱的截面形状等因素的影响,建立碳纤维和角钢复合加固方形混凝土柱的承载力计算模型。模型的计算结果与已有的试验数据吻合较好,并可为工程实践提供参考。
Carbon fiber and angle steel confined concrete can significantly improve its bearing capacity and ductility. Based on the analysis of the existing experimental data, the constraint mechanism and the force model of carbon fiber and angle steel composite reinforced concrete columns are studied, and the concept of effective restraint area is introduced. The calculation method of the effective restraint area of concrete column strengthened with carbon fiber and angle steel is proposed respectively . On this basis, considering the influence of such factors as the number of carbon fiber layers, the area of the angle steel, the longitudinal reinforcement and the cross-sectional shape of the concrete column, a bearing capacity calculation model of a square concrete column reinforced by carbon fiber and angle steel is established. The calculated results of the model are in good agreement with the existing experimental data and provide a reference for engineering practice.