Fiume Po Bridge (object state)
A condition of an object at a particular time, reflecting the object's ability to fulfil it's requirements.
Properties
Element type
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Object state
Summary
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The Fiume Po Bridge experienced undermining of footings and exposed foundation piles in the piers located in the riverbed. In some of the beams, few strands of the prestressing cables were found corroded during the inspections. Concrete spalling and reinforcement steel corrosion were observed. A Sacertis continuous monitoring system is active on the structure since February 2020, with the aim to control the structural behaviour over time and optimize the maintenance procedures. It consists of 220 biaxial MEMS clinometers and 100 triaxial MEMS accelerometers, installed on the deck and the piers of the 11 monitored spans. In each sensor box are present a temperature and humidity detectors. Prior information available were: drawings, design documents, results of the proof load test. A calibrated non-linear FE model based on the static load test and dynamic characterization of the structural response through long-term data analytics has been used to determine the warning and alarm thresholds levels.
Prior information
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Design standards, Drawings, Design documents, Previous inspections, Monitoring data, Numerical models
Performance indicator
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Deformation, Displacement, Dynamic response (acceleration/damping/frequencies), Material mechanical properties
Inspection method
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IoT and sensor systems
Relations with other elements
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Observed deterioration processes Carbonation, Chloride induced corrosion
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The inspection method used in this case study to determine the object state was "IoT and sensor systems". This can include any of the following surveying technologies. Click one of the links below for more information:
IoT and sensor systems