The Pinkatal Bridge (structure “W92”) carries the Austrian A2 autobahn across the Pinka river valley in eastern Austria, close to the Hungarian border. During the planning of renovation works to be carried out in 2010, it was determined that shock absorbers should be added. These would connect the bridge’s superstructure to its abutments, improving its ability to withstand unusually large forces.
In 2010, mageba supplied two RESTON-SA shock absorbers to help ensure the safe transfer of forces between the bridge’s deck and its abutments, one at each end. RESTON-SA shock absorbers are frequently used to dissipate the large amounts of energy that result from sudden dynamic loading (e.g. from earthquakes or from the braking of heavy vehicles). In normal conditions, however, they permit free movement between the structure’s parts.
The delivered shock absorbers accommodate movements of +/- 100 mm and were designed according to the equation F = CVa, with F = 500 kN, C = 570 kNs/m and a = 0.2.
RESTON-SA shock absorbers
Pinka river valley
Swietelsky BaugesmbH, Alpine Bau GmbH, Gebrüder Haider & Co