Gad Bridge (analysis)
A detailed assessment of the condition of an object.
Properties
Element type
:
Analysis
Summary
:
The Gad bridge has been subject to continuous monitoring since March 2019 as part of a consulting project of Sacertis Ingegneria srl, to specifically control the structural behaviour over time of the Gerger saddles of the simply supported spans over the Turin-Modan railway, until the deck replacement (planned within the next 5 years time). A non-linear FE model has been calibrated using optimization algorithms based on the static load test results and the analysis of the structural response through long-term data analytics. A local 3D shell FE model has been developed to further validate the results and perform sensitivity tests. The definition of the thresholds, for each sensor of the monitoring system, has been based on the simulation of significant damage scenarios causing a targeted reduction of the reliability levels.
Case type
:
Consulting
Initiation of assessment
:
Required reliability check (by owner or authorities), Structural deterioration
Predominant verification type
:
Design value criteria
Predominant verification scale
:
Structural system
Structural analysis
:
Model updating procedures and description of damage scenarios used to define thresholds based on reliability considerations
Physical intervention
:
Strengthening or upgrading
Operational intervention
:
Maintenance, Monitoring