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．