箍筋不同配置钢筋混凝土柱的力学性能分析

为进一步明确柱箍筋配置对钢筋混凝土(RC)柱的力学性能影响,以柱箍筋不同配置形式为主要研究参量,浇注4根RC柱试件。对各试件进行反复加载试验,研究各试件的滞回曲线、剪切变形、轴向变形、刚度退化及能量耗散系数等。结果表明：对柱箍筋进行加密,有增大试件的最大承载力和控制试件破坏之前的剪切变形和轴向变形的作用；随着箍筋加密区的增大,试件的延性和耗能性能提升。而柱箍筋加密对试件的屈服荷载、初始刚度、第二刚度及刚度退化等没有明显的影响。

Mechanical Properties Analysis of Reinforced Concrete Columns with Different Stirrup Configurations

: To investigate the impact of stirrup configurations on the mechanical properties of reinforced concrete columns, the different stirrup configurations of columns as the main research parameters, four sets of reinforced concrete column specimens were designed. Reversed cyclic loading tests were conducted on each specimen to study the hysteretic curve, shear deformation, axial deformation, stiffness degradation, and energy dissipation coefficient. The results show that: encrypting the stirrups in the column can increase the maximum bearing capacity of specimens and control the degree of shear deformation and axial deformation before the failure of specimens; specifically, with the decreasing of the stirrup spacing in stirrups encryption area, the ductility and energy dissipation capacity of specimens increases. However, encrypting the stirrups on the column have no significant effect on the yield load, initial stiffness, second stiffness and stiffness degradation of specimens.