2017 Volume 55 Issue 3 Pages 232-238
In buildings with 25 floors or less aboveground that are supported by concrete filled steel tube (CFT) columns, axial loads are generally transferred through 2- or 3-story columns to underground steel-encased concrete columns. Such construction often is one of the factors that increase construction cost and period. To remedy this, the author proposes a hybrid column system implemented in a single underground story to transfer axial loads to CFT columns consisting of steel of large size and concrete. This paper gives an outline of the experiments carried out on this structure and the results obtained.
