1999 Volume 64 Issue 526 Pages 209-216
Recently concrete filled-steel tube (CFT) columns have been applied to hundreds buildings in Japan because of the high performance for seismic load. But the current design method of AIJ is difficult to be understood for structural designers and is discontinuous for slenderness. In this paper the unified and simplified design method is proposed. It is based on the concept of generalized cumulative strength of SRC for any slenderness with modification of the boundary condition of member. The accuracy has checked by reported experimental data.
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