純圧縮を受けるコンクリート充填角形鋼管短柱の座屈および座屈後挙動

抄録

Concrete filled steel tubular column has a large deformation capacity according to the effect of filled concrete preventing the buckling of steel tube wall. However, it has not been clear the mechanism of interaction between steel tube and filled concrete. In this paper, with resnect to the buckling and post-buckling of steel tube, the behavior of concrete filled steel tubular columns under pure axial compression are evaluated on the stub column tests and finite element analysis. Load-displacement curve of concrete filled steel tube are predicted on the basis of analytical results.