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The elastic stiffness, the ultimate flexural strength, and elastic-plastic behavior of the exposed type concrete filled steel tube(CFT)column bases were investigated experimentally and theoretically. ...The specimen, which is composed of a canti-levered CFT column, a base plate, unbonded anchor bolts and a reinforced concrete connection panel, was subjected to a constant axial load and cyclic seismic lateral loads at the column top. The elastic-plastic behavior of the specimen was simulated by the analytical method proposed by authers. From the comparison, a very good agreement could be seen between them. In the analytical method, a confining effect was taken into account to concrete under a base plate, which made the simulation accurate well.show more
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jaud002_p069