PSI - Issue 84

Michela Pulsoni et al. / Procedia Structural Integrity 84 (2026) 214–222 M. Pulsoni et al. / Structural Integrity Procedia 00 (2026) 000–000

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Fig. 3. Geometry adopted for TInSAR monitoring.

Two tests were carried out on the different spans, organised as follows: • AVT test, performed in undisturbed conditions, without vehicular traffic and under the sole influence of environmental actions. • Mixed test, involving the application of static and moving loads using heavy trucks, in order to observe the structural response to vehicle passages under controlled conditions. • Load test, involving convoys composed of multiple vehicles (for example, 3 trucks of 40 t and 1 truck of 46 t), aimed at characterising the static deformation behaviour under quasi-stationary loads. As expected, for both viaduct the tests show displacements proportional to the applied loads, on the order of approximately 1.5 mm for each truck (40 t) (Fig.4).

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Fig. 4. Results of the load and mixed tests on span 3 of Viadotto Puleto and Viadotto Tevere IV: (a) load test on span 3 of Viadotto Puleto; (b) mixed test on span 3 of Viadotto Puleto; (c) load test on span 3 of Viadotto Tevere IV; (d) mixed test on span 3 of Viadotto Tevere IV. Legend: heavy vehicle stop/parking (truck with STOP sign above; truck with blue square above); fast transit of heavy vehicles (truck with long arrow); slow transit of heavy vehicles (truck with short arrow). 3.2. Survey and monitoring of the Ponte Amedeo VIII and Ponte Margherita (Turin) The safety of urban bridges is currently at the centre of public and technical attention: heavy traffic, extreme weather events and progressive material degradation demand increasingly advanced monitoring tools. In this context, the ISABHEL project – Integrated Satellite and ground-based monitoring for Bridge HEalth Lifetime assessment , developed as part of the 5G FOR LART activities – has been established. It combines satellite data, detailed surveys