This made designing the cross-sections much easier, as each parametric cross-section had variables assigned such as length or angle. Parametric design was used due to the large number of structural members involved. From this base, the rest of the bridge – including the bridge structure, road, cornices, safety barrier, piers, and retaining walls – were all designed parametrically in 3D using Allplan Bridge. xml format, giving the bridge engineers the data they needed for their design. The horizontal and vertical alignments of the bridge were then imported into Allplan Bridge in. Several different road alignments were designed to determine the best option of the new overpass. This unusual construction method and composite design ensured that no formwork was required over the railway during construction, reducing the disruption to the operation of the railway.ģD Bridge Modeling Using Parametric Design
The central span that crosses over the railway includes a precast concrete slab supported by steel beams, which acts as the formwork for a cast in-situ reinforced concrete slab on top. The main span is supported by piers, while the rest of the bridge sections are each supported by two bearings. The new bridge was designed using prestressed concrete slabs for the bridge spans, which vary in length from 15m to 27.5m. engineering consultants, is one of their first projects designed entirely in 3D using Allplan Bridge and exploits the benefits of parametric bridge design. The bridge, which was designed by Sagasta s.r.o.
The new seven-span bridge will have a total length of nearly 145m, with a 27.5m span over the railway. Not only will this enable the separation of the road and railway traffic, but the existing road alignment could be improved at the same time to provide a safer and more comfortable ride.
In Kynšperk nad Ohří in the Czech Republic, a new bridge will soon replace the existing level crossing.