Static Testing of a Bridge Using an Interferometric Radar: The Case Study of “Ponte degli Alpini,” Belluno, Italy

Abstract EN

Ground-based radar interferometry is an increasingly popular technique for monitoring civil infrastructures.

In this paper, the static testing of a bridge is reported.

It was an 8-span bridge, 297 m long, named “Ponte degli Alpini,” crossing the valley of the Ardo River.

The radar has been used for testing a lateral span and a central span.

The obtained results present elements of novelty not previously reported in the literature.

In fact, some displacement measurements of the lateral span have been affected by a horizontal shift that has to be taken into account for a correct interpretation of the measured data.

Furthermore, the measurements of the central span have been carried out with the radar positioned transversally with respect to the bridge deck; this unusual arrangement has allowed for obtaining displacement maps less geometrically distorted with respect to other cases reported in the literature.