DEVELOPMENT OF STEEL METABOLISM COLUMN CAPABLE OF MODIFYING SEISMIC PERFORMANCE WHILE SUPPORTING AXIAL FORCES

Abstract

 In a series of studies, the authors have developed metabolism columns capable of modifying theirs seismic performance while supporting axial forces. The Metabolism column structure has a double structure at the base of the column, with a replaceable part that is expected to absorb seismic energy as the outer shell, and a core part that supports the constant axial and shear forces inside the column.

 In this study, a new metabolism column with steel members as the replacable parts was proposed, and experimentally investigated its performance and the replaceability of the replaceable parts. As a result, it is found that the proposed structure has high seismic performance, and it is possible to metabolize the seismic performance of the structure by replacing the steel replaceable parts. In addition, it is confirmed that the proposed structure can improve the post-peak behavior after the buckling of the steel replacement parts because the core part can support the compressive axial force.