箍筋尺寸对复合约束短柱的轴压性能影响分析

Analysis of the Effect of Hoop Size on the Axial Compression Performance of Short Composite Restrained Columns

为分析不同箍筋尺寸对内置方形箍筋的复合约束短柱轴压力学性能的影响,采用大型有限元分析软件对复合约束短柱进行了建模分析,研究了箍筋参数对短柱破坏模式、承载能力和延性等力学性能的影响,研究结果表明,提高箍筋直径和内置钢筋笼的边长对短柱的破坏现象影响较小,但能有效提高短柱的复合约束作用,进而提高短柱的承载能力和延性。

To analyze the effects of different hoop sizes on the axial compression mechanical properties of the composite restrained short column with built-in square hoops,modeling and analysis of the composite restrained short column were carried out using large finite element analysis software,and the effects of hoop parameters on the mechanical properties of the short column such as damage mode,bearing capacity and ductility were investigated,and the results showed that increasing the hoop diameter and the side length of the built-in reinforcement cage had a small effect on the damage phenomenon of the short column,but could effectively the results show that increasing the hoop diameter and the side length of the built-in reinforcement cage have less effect on the damage phenomenon of short columns,but can effectively improve the composite restraint effect of short columns,and then improve the bearing capacity and ductility of short columns.