Advances in Identification and Fault Detection in Bridge Structures

The paper presents some results obtained via the eigen-sensitivity up-dating procedure applied to two different kind of bridges, the former being the well known Z24 bridge, the latter consisting of a railway masonry arch bridge crossing the Tanaro river, in the Northern of Italy. More than a simple exercise to test the features of the well established output-only identification routines (ARMAV and CVA on this occasion), as well as the up-dating eigen-sensitivity techniques, the papers deals with the typical problems encountered during real size bridge tests and emphasizes the differences with other previous analyses performed by the same authors on other bridge structures