Abstract:
This work presents the seismic evaluation of a large network of infrastructures located in the
Veneto Region in the North-East of Italy. A large bridge database was subject to investigation,
and simplified automated seismic valuation methods were developed in order to estimate the
behavior of different types of structures located in seismic zones. In particular, analyses of
infrastructures insistent in seismic zones, including surveys, investigations, seismic evaluation
and seismic hazard assessment of the infrastructure in reference to parametric study of the
structural vulnerability have been carried out. After estimating the safety factor of each
structure based on the most vulnerable structural element, the key infrastructures on which
execute system identification and simulate the response through numerical models were
distinguished. In fact, the second step of this study is the structural identification of highly
damaged bridges where a straightforward procedure has been applied. Static and modal
parameters have been estimated for masonry arch bridges, concrete arch and continuous
bridges, reticular and box girder steel bridges. The structural identification was used not only
for calibration purposes but also for short and long term structural health monitoring (SHM)
and damage detection. The SHM systems revealed good efficiency by maintaining the analyzed
bridges open to traffic and constantly controlled.
