抄録
Concrete filled steel tubular (CFT) columns have become popular as structural member used for buildings. In the current standards on CFT structures, the scope of design formula is limited circular and square section steel tubes. However, not only these steel tubes but rectangular section steel tubes is used for CFT columns. In this paper, the design formula of rectangular CFT columns is specified. Furthermore, this paper discusses the several issues using rectangular CFT columns on practical design.
