HomeApproach & Jetty

Approach & Jetty

1

Jetty structure before strengthening

2

Fixing of carbon laminate to the beam at fixed anchorage end

3

Pre-stressing of carbon laminate at mobile anchorage end

4

Beam after strengthening

5

Slab after strengthening with carbon fibre wrapping

Make OR Break Factor

To effectively harnessing the high-tensile property of carbon laminates via pre-stressing

THE CHALLENGE :

  • The main jetty and approach was suffering from a structural shortfall, due to the addition of a crane. It was also suffering from widespread corrosion in its steel reinforcements.

THE ODDS :

  • The only scaffolding provided was suspended from the deck with anchors
  • Tidal variations restricted work hours to 6 hours at a stretch, which necessitated the fabrication and use of quick-setting as well as moisture-sensitive materials

OUR RESPONSE :

  • Our first step was to evaluate the reduction of strength due to corrosion. After which we did the following.
  • Reanalyzed the design as per the additional requirements and designed a method of retrofitting
  • We used micro-concreting to patch up the corrosion-damaged RCC members
  • We reinforced the structural members with pre-stressed carbon laminates, carbon fibre wrapping and
    glass fibre wrapping