The construction of the new suspension bridge in Linz as part of the A26 motorway project has been completed. Following completion, VCE was commissioned to carry out tests to determine the damping properties of the main suspension cables and specific long suspension cables.
The new Danube bridge was erected as suspension bridge in the course of the A26 motorway in Linz and was recently completed. In cable-supported bridges like cable-stayed bridges and suspension bridges, an examination of all cables and ropes regarding unwanted, potentially hazardous vibrations e.g. caused by wind action is required.
After completion of the bridge VCE was assigned with the determination of damping of the suspension cables and selected long hanger cables by means of tests to be able to prove the observance of the required minimum damping.
In this process the cables were excited by vibrations by the VCE measurement team – supported by rope climbers – by means of so-called snap-back tests and the decay process was measured by highly sensitive acceleration sensors. The self-damping of the hanger cables and the suspension cables was evaluated for the relevant eigenfrequencies from the measurement data acquired.
LOCATION
Linz, Upper Austria
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