Factors dominating a mechanical behavior under compressive loads of steel structural members corrected by heating/pressing had been identified by using cruciform columns. These factors were geometric residual imperfection resulting from incomplete correction by heating/pressing and increase of yield stress due to large plastic deformation caused by local buckling and its correction process. In this paper, in order to verify the generality of these factors, a series of experiments and the elastic-plastic large deformation analysis were carried out on box columns. From the results, the behavior under compressive loads such as ultimate strength and buckling mode of the box columns corrected by heating/pressing could be explained by these factors. The generality of these dominant factors could be confirmed regardless of the structural shape of members.
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