Structural Health Monitoring of Composite Shell Footbridge for Its Design Validation

The paper presents the structural health monitoring system of the composite bridge for pedestrians and cyclists. The footbridge was designed and manufactured within the FOBRIDGE project. It is the first bridge in the world, which is classified as a consistent single element structural girder, made of sandwich shells, entirely produced in a single cycle. The developed structural health monitoring system, supported design process, gave a possibility to confirm assumed capacity and to observe long-term rheological changes in structural material. The proposed SHM system contains three subsystems: monitoring of strains, vibrations and displacements. It is based on different kind of measurement sensors and precision levelling. The paper contains introduction to the topic, detailed description of the monitoring system and example results with reference to theoretical values.