2017
DOI: 10.1016/j.isprsjprs.2017.03.016
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Displacement monitoring and modelling of a high-speed railway bridge using C-band Sentinel-1 data

Abstract: a b s t r a c tBridge displacement monitoring is one of the key components of bridge structural health monitoring. Traditional methods, usually based on limited sets of sensors mounted on a given bridge, collect pointlike deformation information and have the disadvantage of providing incomplete displacement information. In this paper, a Persistent Scatterer Interferometry (PSI) approach is used to monitor the displacements of the Nanjing Dashengguan Yangtze River high-speed railway bridge. Twenty-nine (29) Eur… Show more

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Cited by 81 publications
(59 citation statements)
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“…The thermal expansion exhibits the seasonal change and is often expressed as a function of temperature changes, ∆T i and thermal expansion variable, k T . Thermal dilation is one of the common displacement patterns observed in the human-made structures, and has been presented in several previous studies [14,[16][17][18][19]28,29]. The long-term deformation of a bridge structure is induced by shrinkage, aging, and creeps.…”
Section: Application Of Time-series Psi and Its Interpretationmentioning
confidence: 94%
“…The thermal expansion exhibits the seasonal change and is often expressed as a function of temperature changes, ∆T i and thermal expansion variable, k T . Thermal dilation is one of the common displacement patterns observed in the human-made structures, and has been presented in several previous studies [14,[16][17][18][19]28,29]. The long-term deformation of a bridge structure is induced by shrinkage, aging, and creeps.…”
Section: Application Of Time-series Psi and Its Interpretationmentioning
confidence: 94%
“…Although traditional methods are robust and precise based on limited observations through manual leveling or sets of mounted sensors, however, the collected point-like information has the disadvantage of providing incomplete motion information. Consequently, in recent years, spaceborne MT-InSAR technologies are increasingly being used to monitor structural health (e.g., bridges [21][22][23][24]), in particular owing to the availability of high-resolution SAR datasets.…”
Section: Rationale and Procedures Of The Applied Extended D-tomosarmentioning
confidence: 99%
“…The real motions detected in LOS, either due to the bridge structural tilting or subsidence, were utilized as quantitative indicators to evaluate the health conditions of the bridge. The 1 − α confidence interval for the real motion variation can be ±t crit •stdev, where t crit is the critical value of the t distribution with degree of freedom M − 1 (M is the number of SAR acquisitions) and with significance level of α/2 [22], and stdev is the standard deviation of real motions. Then, the upper and lower limit of real motion variations were defined (±9.2 mm for TSX/TDX and ±8.2 mm for CSK), as highlighted by the dotted-red line in Figure 10b,d.…”
Section: Dyr Bridgementioning
confidence: 99%
“…One of them is oriented towards monitoring of man-made structures in detail with highresolution SAR images, e.g., TerraSAR-X, COSMO-SkyMed, and PALSAR-2. Many fellows have improved and adapted PSI techniques to estimate structural deformation of buildings and infrastructures at small scale of millimeter or centimeter level * Corresponding author (Gernhardt and Bamler, 2012;Huang et al, 2017;Schunert and Soergel, 2016). In contrast, we are extending PSI to detect largescale change events like building constructions.…”
Section: Introductionmentioning
confidence: 99%