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Skanska in Poland
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Działalność i usługi serwisowe
Projektowanie i budowanie przy użyciu wirtualnych modeli (BIM)
Located in the center of Przemyśl, a pedestrian & cyclist bridge over the San river, connected two waterfronts – Józefa Piłsudskiego and Saint Pope John Paul II. The river crossing was built as a part of the project called “Cyclist routes in Easter Poland”.
The bridge construction is consisted of 38 meter high steel pylon together with two 155 centimeters high and 138 meters long glue-laminated wood girders, reinforced with steel structure. Concurrently, the girders are functioning as the railing protection, providing safety for the bridge users.The overcrossing is supported by 24 steel cables (diameter 32 and 40 mm). Its base and internal sheathing were made of Wood-Plastic Composite (WPC), which is ideal to use whether durability and weather resistance are required. Weight of the whole structure is approx. 175 tons. The assembly was conducted on a floodplain, parallel to the river’s banks, to avoid the interference of temporary scaffolding in the riverbed. The bridge is located in the historic part of the city and the area is protected by “Natura 2000” project.
Agnieszka KotelaSpecialistSkanska Poland+48 32 606 7052
E-mail Agnieszka Kotela
Segment rynku: Bridges
To place the object over the water, after platform assembly, the bridge was rotated 90 degrees. The installation of the steel pylon was conducted due to very specified assembly plan, which included lifting the object with two cranes (100t and 300t). After plumbing, the pylon was placed on the special construction prepared from the steel profiles, creating the “runway” and allowing the rotation to be made. Additionally, the pylon was backed up with the temporary construction providing the sliding support, which was rotating together with the attached bridge’s platform on a special steel slide. To provide stabilization, the support was additionally burdened by a 30t load. The rotation was executed by two servomotors, providing the force and the control during the rotation. Moreover, the Teflon spacers and specific lubricant were used to minimize the friction during the rotation. The last phase of construction works were the static and dynamic load tests, conducted with 70 tons load and a participation of 80 people. The deflection and object movements were monitored during the proof load with the participation of cyclists and pedestrians. As safety is our biggest value, all those actions led to make sure that all the measured indicators were within the safe norms, predicted in the project.