Pre-Collapse Space Geodetic Observations of Critical Infrastructure: The Morandi Bridge, Genoa, Italy
We present a methodology for the assessment of possible pre-failure bridge deformations, based on Synthetic Aperture Radar (SAR) observations. We apply this methodology to obtain a detailed 15-year survey of the Morandi bridge (Polcevera Viaduct) in the form of relative displacements across the stru...
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doaj-0f2c05045068470b9351bed7008939ad2020-11-25T02:23:39ZengMDPI AGRemote Sensing2072-42922019-06-011112140310.3390/rs11121403rs11121403Pre-Collapse Space Geodetic Observations of Critical Infrastructure: The Morandi Bridge, Genoa, ItalyPietro Milillo0Giorgia Giardina1Daniele Perissin2Giovanni Milillo3Alessandro Coletta4Carlo Terranova5NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USADepartment of Architecture and Civil Engineering, University of Bath, Bath BA2 7AY, UKRaser limited, 33050 Ruda, UD, ItalyItalian Space Agency, 75100 Matera (MT), ItalyItalian Space Agency, 75100 Matera (MT), ItalyGeoportale Nazionale, Italian Ministry of the Environment, 00147 Rome, ItalyWe present a methodology for the assessment of possible pre-failure bridge deformations, based on Synthetic Aperture Radar (SAR) observations. We apply this methodology to obtain a detailed 15-year survey of the Morandi bridge (Polcevera Viaduct) in the form of relative displacements across the structure prior to its collapse on August 14th 2018. We generated a displacement map for the structure from space-based SAR measurements acquired by the Italian constellation COSMO-SkyMed and the European constellation Sentinel-1A/B over the period 2009−2018. Historical satellite datasets include Envisat data spanning 2003−2011. The map reveals that the bridge was undergoing an increased magnitude of deformations over time prior to its collapse. This technique shows that the deck next to the collapsed pier was characterized since 2015 by increasing relative displacements. The COSMO-SkyMed dataset reveals the increased deformation magnitude over time of several points located near the strands of this deck between 12th March 2017 and August 2018.https://www.mdpi.com/2072-4292/11/12/1403synthetic aperture radar interferometry (InSAR)critical infrastructure monitoringbridge engineering |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Pietro Milillo Giorgia Giardina Daniele Perissin Giovanni Milillo Alessandro Coletta Carlo Terranova |
spellingShingle |
Pietro Milillo Giorgia Giardina Daniele Perissin Giovanni Milillo Alessandro Coletta Carlo Terranova Pre-Collapse Space Geodetic Observations of Critical Infrastructure: The Morandi Bridge, Genoa, Italy Remote Sensing synthetic aperture radar interferometry (InSAR) critical infrastructure monitoring bridge engineering |
author_facet |
Pietro Milillo Giorgia Giardina Daniele Perissin Giovanni Milillo Alessandro Coletta Carlo Terranova |
author_sort |
Pietro Milillo |
title |
Pre-Collapse Space Geodetic Observations of Critical Infrastructure: The Morandi Bridge, Genoa, Italy |
title_short |
Pre-Collapse Space Geodetic Observations of Critical Infrastructure: The Morandi Bridge, Genoa, Italy |
title_full |
Pre-Collapse Space Geodetic Observations of Critical Infrastructure: The Morandi Bridge, Genoa, Italy |
title_fullStr |
Pre-Collapse Space Geodetic Observations of Critical Infrastructure: The Morandi Bridge, Genoa, Italy |
title_full_unstemmed |
Pre-Collapse Space Geodetic Observations of Critical Infrastructure: The Morandi Bridge, Genoa, Italy |
title_sort |
pre-collapse space geodetic observations of critical infrastructure: the morandi bridge, genoa, italy |
publisher |
MDPI AG |
series |
Remote Sensing |
issn |
2072-4292 |
publishDate |
2019-06-01 |
description |
We present a methodology for the assessment of possible pre-failure bridge deformations, based on Synthetic Aperture Radar (SAR) observations. We apply this methodology to obtain a detailed 15-year survey of the Morandi bridge (Polcevera Viaduct) in the form of relative displacements across the structure prior to its collapse on August 14th 2018. We generated a displacement map for the structure from space-based SAR measurements acquired by the Italian constellation COSMO-SkyMed and the European constellation Sentinel-1A/B over the period 2009−2018. Historical satellite datasets include Envisat data spanning 2003−2011. The map reveals that the bridge was undergoing an increased magnitude of deformations over time prior to its collapse. This technique shows that the deck next to the collapsed pier was characterized since 2015 by increasing relative displacements. The COSMO-SkyMed dataset reveals the increased deformation magnitude over time of several points located near the strands of this deck between 12th March 2017 and August 2018. |
topic |
synthetic aperture radar interferometry (InSAR) critical infrastructure monitoring bridge engineering |
url |
https://www.mdpi.com/2072-4292/11/12/1403 |
work_keys_str_mv |
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