Deformed steel structures can be repaired with heat straitening technique. However, column straitening is a difficult task as deformation will lead to eccentricity and during heat straitening one has to ensure that
this is not aggravated further . At times columns are heavy structural members with bending at two places which poses another threat. This requires extremely careful planning to avoid failure during heat treatment. As a result most of the time these are uneconomically replaced. Do we have any new trend in restoration of bended/deformed columns.
quite interesting case of column which was hit by a heavy earth mover and the same resulted in bending of the same. In this form lot of eccentricity has developed but the column is still intact and no distress in the entire structure. Probably highly indeterminacy compounded with very high factor of safety of the structure has resulted in the functionality of the deformed column.
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