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为研究不同的配箍特征值、箍筋间距和箍筋强度因素对双层高强箍筋约束高强混凝土圆形柱和方形柱的约束效果的影响,采用有限元软件ABAQUS进行数值模拟和试验对比.研究结果表明:双层高强螺旋箍筋约束高强混凝土圆形柱具有较高的受压承载力和较好的延性.最后通过理论研究和线性回归两种方式对双层高强箍筋约束高强混凝土圆形柱的承载力计算公式进行推导,建立了简洁且与试验数据吻合良好的承载力计算公式.
In order to study the influence of different bracing characteristic values, stirrups spacing and stirrups strength on the restraint effect of high strength concrete circular columns and square columns constrained by double-layered high-strength stirrups, numerical simulation and experimental comparison were carried out by finite element software ABAQUS. The results show that the double-layer high-strength spiral stirrups constrained circular columns with high strength concrete have high compressive bearing capacity and good ductility.Finally, through theoretical research and linear regression, The calculation formula of the bearing capacity of column is deduced, and the calculation formula of bearing capacity which is concise and in good agreement with the test data is established.