Abstract
Concrete-filled tubular steel column with cast steel bearing plates has been recently developed subway station by the unification of conventional tubular steel column and composite column. The following investigations were conducted. 1) Numerical simuration by FEM to analyze the structurally optimum configuration of bearing plates. 2) Experimental study with half-size models. 3) Standardization for practical application. This development has enabled to achieve new economical system as well as to make the construction more simplified.
