STRUCTURAL PERFORMANCE OF CONCRETE-FILLED SQUARE STEEL TUBULAR COLUMNS USING HIGH-STRENGTH MATERIALS SUBJECTED TO MULTIPLE CYCLIC LOADING

Abstract

From the results of recent research on long-period ground motions, it is feared that a high-rise building with a long natural period will be seriously damaged by long-period ground motions caused by a huge earthquake along the Nankai Trough, which is expected to occur in the near future. Therefore, it is an urgent task to grasp of the structural performance of concrete-filled steel tubular (CFT) columns used in high-rise buildings against multiple cyclic loadings. To grasp structural performance of square CFT columns subjected to multiple cyclic loading, ten specimens were tested.