📋 Tender Overview
Since the spring OBB has been working intensively on modernizing the railway line between Wr. Neustadt and Hartberg Aspangbahn as well as on the route Friedberg Oberwart. The focus is on the renewal of the Friedberg Grafendorf and Rohrbach-Vorau stations and the construction of two new bridges in Dechantskirchen and Haideggendorf. The Pinkabach Bridge in Haideggendorf is considered a technical innovation. Now she is finished.Since August the construction team in Haideggendorf has been working flat out to renew the railway bridge over the Pinkabach. For the first time a supporting structure with reinforced concrete box girders with a wall thickness of only approx. 15 centimeters was installed otherwise 25 to 30 centimeters are usual. The special construction which ultimately uses less concrete than conventional models was built in nature for the first time. And the components which are extremely slim compared to conventional finished parts are characterized by their low weight.Technical innovationThe new design was tested in advance in the laboratory at the Vienna University of Technology with which BB is successfully cooperating. The supporting structure consists of prefabricated parts that are connected with reinforcing bars and cast with concrete. Bridges can be built much faster than before with the new process. With the first application on the Pinkabach Bridge BB has made a decisive contribution to the further development of this innovation explains Johann Kollegger Professor of Concrete Construction at Vienna University of Technology.Challenging precisionwork The old bridge structure was removed excavated and replaced with a new one. The components for the new bridge were prefabricated which made their light weight possible and then used like large building blocks. Two 450-ton cranes were used to lift the prefabricated parts. Precision work and a great deal of sensitivity were required because such finished parts can also break if they are not lifted properly or handled too quickly. The work had to be completed in the tightest of time frames in order to keep line interruptions and thus the disruption to train traffic as short as possible explains Heinz Hller Deputy Regional Manager of BB. Now the bridge is fit for the future again.
