Mode shapes Analysis
The instrumentation campaign was able to identify the first four main resonance frequencies:
- Rocking mode: 1.4 Hz
- Torsional mode: 1.9 Hz
- Bending mode (Horiz.): 3 Hz
- Bending mode (vert.): 4 Hz
For the purpose of carrying out this vibratory analysis on the footbridge, Woelfel Engineering chose to use the new vibration recorder, the RECOVIB Tiny, an extremely practical device for a fast and efficient vibration diagnosis.
Its wireless technology and intuitive operation provide substantial time savings in the performance of the measurements.
The RECOVIB Tiny is the only range of vibration and shock recorder that allows several sensors to be used simultaneously in a synchronized manner enabling the performance of modal analyses and operational deflection shape analyses on large structures such as this footbridge.