A multi-sensor approach for monitoring a road bridge in the Valencia harbor (SE Spain) by SAR Interferometry (InSAR)
RENDICONTI ONLINE SOCIETA GEOLOGICA ITALIANA(2016)
Abstract
Settlement and angular distortion affecting the construction can cause damages on structures and they could compromise the serviceability of the structure. This work focuses on the monitoring of a bridge located on the south part of the Valencia harbor that shows some opening joints and depressions in the pavement of both transition areas between the abutments and the embankments. For this purpose Advanced Differential Interferometry is used to exploit Synthetic Aperture Radar images (SAR) acquired by ALOS and Cosmo-SkyMed satellite sensors from February 2007 to July 2010 and from May 2010 to August 2012, respectively. This approach permitted to estimate surficial displacements, to identify areas of bridge affected by settlements and angular distortion and to relate them with the observed damages.
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Key words
angular distortion,bridge,harbor,PSInSAR,settlement
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