局部外包钢管装配整体式柱抗震性能试验研究

提出一种高强复合螺旋箍筋约束混凝土、外包钢板箍和横穿栓筋连接的新型装配整体式柱。通过对不同钢板箍厚度和轴压比下的3个装配式长柱与1个现浇长柱进行拟静力对比试验,证明这种装配整体式柱抗震性能良好,节点连接安全可靠,可以代替现浇整体柱。以钢板箍厚度与轴压比为研究变量,利用ANSYS对柱的滞回性能进行对比分析,研究结果表明:数值模拟与试验吻合较好,提出的装配整体式柱ANSYS数值分析模型合理可行,可运用ANSYS程序对装配整体式柱结构进行有限元数值模拟和受力性能研究分析。

EXPERIMENTAL STUDY OF SEISMIC BEHAVIOR OF THE STEEL TUBULAR ASSEMBLY COLUMN

A new kind of precast concrete segmental columns has been put forward in this paper.Its core concrete is constrainted by high-strength compound spiral stirrups and the exterior steel plate hoop penetrated by the bolt bar used for the connection area.It is compared the three assembled long columns under different width of the exterior steel plate hoop and axial pressure ratio to the one cast-in-place long column.It is proved that the new kind of precast concrete segmental columns is better for the anti-seismic capacity and safe in the node connection area so that the cast-in-place long column can be replaced.ANSYS FEM software is used to take contrastive analysis for the column of hysteretic behavior based on the width of the exterior steel plate hoop and axial pressure ratio,the results show that numerical simulation meets well with the experiment,the ANSYS numerical analysis model of precast concrete segmental columns is feasible and correct.The ANSYS FEM can be used for the numerical simulation and the analysis of mechanical performance study of the assembled column structures.