Construction of concrete in-citu pre-stressed bridge structures
Construction technologies:
- Concreting on site using continuous scaffolding
- Concreting section by section on permanent false work with subsequent launching of a completed section of the section‐by‐section balanced concreting using movable scaffolding
Technology of pre-stressing of the bridge structures:
- Manufacture and installation at assembly of the elements of anchorage of cables and channellers for the prestressing tendons
- Driving of the cables into the channellers and organisation of batches of pre-stressed tendons
- Tension with hydraulic jacks of both strands and cables bunches of 4, 12, 19 and 25 wires
- Linking of the batches along the length of the structure
- Cable tension control
- Injection of the channels with concrete after tension of the cables
Works are conducted all year round, including at temperatures below zero in the inventory heated shelters.
