Study on Seismic Performance and Application of L-shaped Concrete-filled Steel Tube Column

In rural residential housing, there are issues such as limited homestead land area, leading to insufficient actual indoor usable space. Steel tube concrete special-shaped columns have good load-bearing capacity, occupy a small footprint, which can solve the problem of protruding indoor column bases. They also have good assembly performance. Therefore, research on the seismic performance of steel tube concrete special-shaped columns is of great significance. In order to study the seismic performance of L-shaped concrete-filled steel tube columns and promote their applications in buildings, the hysteretic curve and skeleton curve were studied by calculation and analysis with ABAQUS software, taking the axial compression ratio and steel tube thickness as parameters. Moreover, the seismic calculation of the whole frame structure was carried out with ETABS software in conjunction the actual building structure design. Results show that L-shaped concrete-filled steel tube columns have the advantages of simple construction and high assembly performance. They have application potential in improving the seismic performance of buildings, so they can be widely applied in rural buildings.