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Strengthening of Beam in Progress

The document summarizes repair work done on a jetty structure due to chloride-induced corrosion of steel reinforcement. To address time constraints from tidal variations allowing only 6 hours of dry period per stretch, all materials were modified to set within this timeframe and be moisture insensitive. Scaffolding also had to be suspended from the deck with anchors. Numerous retrofitting schemes exist for structures, but the appropriate solution depends on multiple factors and an understanding of local and global structural interactions.

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Simranjit Singh Marwah
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45 views13 pages

Strengthening of Beam in Progress

The document summarizes repair work done on a jetty structure due to chloride-induced corrosion of steel reinforcement. To address time constraints from tidal variations allowing only 6 hours of dry period per stretch, all materials were modified to set within this timeframe and be moisture insensitive. Scaffolding also had to be suspended from the deck with anchors. Numerous retrofitting schemes exist for structures, but the appropriate solution depends on multiple factors and an understanding of local and global structural interactions.

Uploaded by

Simranjit Singh Marwah
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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STRENGTHENING OF BEAM IN PROGRESS

PANEL – AFTER REPAIR


BEAMS – AFTER FIBRE WRAPPING
GROUND FLOOR – AFTER REPAIR
GROUND FLOOR – BEFORE REPAIR
GROUND FLOOR – AFTER REPAIR
APPROACH & JETTY STRUCTURE
ISSUE

• Chloride induced corrosion of steel, resulting in de-lamination of concrete and


reduction in reinforcement size.
CHALLENGE

• Due to tidal variation, the maximum duration of dry period available for work was 6
hours at a stretch. As a result all the materials were modified to set within that period
and were also insensitive to moisture

• The scaffolding provided had to be suspended from the deck with anchors

• Work had to be carried out round the clock


CONCLUSION

• Numerous retrofit schemes are available for retrofitting.

• A Multiplicity of factors influence the selection of the retrofit


solution.

• Hence, no general rule. Needs good understanding of local and


global level interaction.

• Summary of global-local consequence of retrofit methods give


quick-look guide to potential user.
SUMMARY OF EFFECT OF RETROFIT ON LOCAL &
GLOBAL RESPONSE
SUMMARY OF EFFECT OF RETROFIT ON LOCAL & GLOBAL
RESPONSE

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