Recently we found in a mineral processing mine that column was damaged due to corrosion to a significant level. In this it seems base plate was also corroded. This requires almost entire replacement. Do we have any alternate way of repairing the same.
In some case the lower portion of columns was encased in concrete to prevent this type of failure, whether making lower portion as a composite column is advisable as this will change the entire behaviour.
Very interesting question for structural rehabilitation.
there is a similar problem when steel reinforcement is corroded in concrete structures.
Dear Om Prakash Chhanganiji,
The literature that may be useful are,
https://fsel.engr.utexas.edu/pdfs/thesis6.pdf
http://www.worldscientificnews.com/wp-content/uploads/2018/11/WSN-118-2019-181-193.pdf
https://www.shortspansteelbridges.org/steel-bridge-rehabilitation-and-repair/
The interesting part in this is that this is bidirectional corner column supporting two platforms above. Inspite of so much damages in foundation the structure is still working and suggest the very high factor of safeties in mining structures.
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