Railway bridge in vilémov

Monitoring železničního mostu ve Vilémově

In 2020 –⁠ 2021, a unique replacement of a steel bridge was carried out near Šluknov in the village of Vilémov. The owner of the bridge approached the CTU FSV Prague, and monitoring of the structure for a period of 5 years was subsequently agreed upon.

Our solution

Individual expansion joints were fitted with resistance dilatometers. In several places, resistance strain gauges were ground into both tracks. A total of 12 strain gauges and 12 dilatometers were installed.

In total, there are 6 sensors with external sensors on a pair of strain gauges and a pair of attachment thermometers. Strain gauges are connected in a semi-bridge connection, where one is measuring and the other serves to compensate for temperature changes.

Advantages of the solution

  •  Easy assembly and disassembly using magnets.
  •  Very low operating and acquisition costs, saving on 3 km of coaxial cable.
  •  Online data in graphs.
  •  Quick evaluation.

Customer: ČVÚT Praha; Realization: 10/2021 – 10/2025

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