Prestressing and static reinforcement of structures

Project description:
This contract required the implementation of an additional prestressing system for two road bridges with five spans over the Ostramo complex. The load-bearing structure is made up of a two-beam continuous girder with five spans (4x25+23,86 m). The thickness of the structure is 1.50 m. The axial distance between the beams is 6.50 m. Pillars P1 and P6 have end crossbeams above them. The beams are prestressed with 6 prestressed cables made of 15o Ls15.7 – 1860. The cables are connected at the fronts of the individual stages, from where they are also prestressed. In one stage, three cables in each beam are prestressed. The second trio passes through and is prestressed in the next stage. The cables were stored in steel protectors type LW 90 mm. The additional prestressing system is by BVV. After prestressing the structure, the cable ducts were grouted with cement mortar.