Investigation of displacements of road bridges under test loads using radar interferometry – Case study

Owerko, Tomasz; Ortyl, Łukasz; Kocierz, R.; Kuraś, Przemysław; Salamak, M.

doi:10.1201/b12352-19

Cited by 22 publications

(14 citation statements)

References 3 publications

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“…Next examples, advantages, limitations and possible applications are for example in [Owerko et al, 2012], [Pieraccini, 2013] and [Talich, 2017].…”

Section: General Principles Of Using Technology In Practicementioning

confidence: 99%

Monitoring of Horizontal Movements of High-Rise Buildings and Tower Transmitters by Means of Ground-Based Interferometric Radar

Talich

2018

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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<p><strong>Abstract.</strong> The paper describes possibilities of the relatively new technics &ndash; ground based radar interferometry for precise determining of deformation of structures. Special focus on the horizontal movements of high-rise buildings and on the tower transmitters is presented. The technology of ground based radar interferometry can be used in practice to the contactless determination of deformations of such structures with accuracy up to 0.01&thinsp;mm in real time. It is also possible to capture oscillations of the object with a frequency up to 50&thinsp;Hz in real time. Deformations can be determined simultaneously in multiple places of the object, for example in the case of high-rise buildings it is possible to monitor the horizontal vibration of the whole object at its different height levels intervals of one or more meters. It is possible to detect and determine the compound oscillations that occur in some types of such buildings. This allows to obtain both overall and detailed information about the properties of the structure during its dynamic load e.g. by wind. Then prevent any damage or even disasters in these objects. In addition to the necessary theory basic principles of using radar interferometry for determining of deformation of structures are given. Practical examples of determining of horizontal movements of high-rise building and tower transmitter are also given. The IBIS-S interferometric radar of the Italian IDS manufacturer was used for the measurements.</p>

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“…Next examples, advantages, limitations and possible applications are for example in [Owerko et al, 2012], [Pieraccini, 2013] and [Talich, 2017].…”

Section: General Principles Of Using Technology In Practicementioning

confidence: 99%

Monitoring of Horizontal Movements of High-Rise Buildings and Tower Transmitters by Means of Ground-Based Interferometric Radar

Talich

2018

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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“…Measurements of horizontal displacements are performed less frequently. However, they are applied to control the position and deformation of engineering structures such as bridges (Owerko et al, 2012) or retaining walls (Sukta and Kuras, 2013), hydrotechnical objects such as concrete dams (Yigit et al, 2016;Barzaghi et al, 2018) or tailings disposal facilities (Jamiolkowski, 2014), and special constructions such as telescopes (Niemiec et al, 2015). In some cases, they are determined also for earth-ll embankments.…”

Section: State Of the Art Of Horizontal Displacement Determinationmentioning

confidence: 99%

Geodetic monitoring of earth-filled flood embankment subjected to variable loads

Kuraś

Ortyl

Owerko

et al. 2018

Reports on Geodesy and Geoinformatics

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The article presents an example of supplementing geotechnical monitoring with geodetic observations. The experimental flood embankment built within the ISMOP project (Information Technology System of Levee Monitoring) was subjected to continuous monitoring based on built-in measuring sensors. The results of geodetic monitoring used for observation of earth-filled flood embankment subjected to external loads are presented in the paper. The tests were carried out on an experimental food embankment forming a closed artificial water reservoir. The observations were carried out for two purposes. The first was long-term monitoring, which was aimed to determine the behaviour of the newly built embankment. The second purpose was to check the reaction of the levee to the simulated flood wave, caused by filling and draining the reservoir. In order to monitor the displacements of the earth-filled embankment, it was necessary to develop the proper methodology. For the needs of research works, an appropriate network of 5 reference points and 48 survey markers has been designed and established. The periodic measurements were carried out using precise robotic total station. The stability of the reference frame was each time checked and displacements of survey markers were determined based on it. The final results allow to reveal the reaction of levee to external loads. The displacement values were referred to the course of the filling and draining experiment to indicate the relationship between them. In the field of long-term monitoring the results clearly imply the dominance of displacements outside the reservoir for points located on the embankment, in contrast to points on the crest and foreground, which do not show significant movements. On the other hand, in the field of testing the embankment reaction to the flood wave, obtaining reliable results was possible thanks to high-accuracy geodetic measurements. Small displacement values, often at the level of their determination errors, were averaged for groups of points with the same height of foundation. A sizable number of points allows to perceive some tendencies and the relation between embankment soaking, hence its movement directions can be noticed. During periods when the levee was still saturated with water, slight movements outside the reservoir were revealed. On the other hand, the following period of drying caused movement in the opposite direction.

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“…On the other hand, parameters of the structure's elements, both structural and non-structural, determine its safety and reliability. An important issue is therefore the structural health monitoring (SHM), which is the widely undertaken subject in the national and international literature [4][5][6][7][8][9][10][11].…”

Section: Analysis Of Local Influences Versus Structural Health Monitomentioning

confidence: 99%

Analysis of local influences in structural details of the bridges

Rudzik¹,

Pradelok²

2017

Transport Problems

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Summary.The article analyses the problems of local influences in structural details of bridges as the critical locations, whose damages or excessive force may directly affect the safety of users. These analyses are shown on selected examples. Presented is the example of local changes in the forms of proper vibrations in the node of the truss bridge that can be used in expert issues concerning the causes of damages. The second example are the changes in stresses in the stay cable anchorage element including the nonlinear material models. Models of this type can be successfully used by engineers as they allow for analysis of selected structural details without the need for detailed mapping of the entire structure, but only a selected section. ANALIZA LOKALNYCH WPŁYWÓW W SZCZEGÓŁACH KONSTRUKCYJNYCH MOSTÓWStreszczenie. W artykule podjęto problematykę analizy lokalnych wpływów w szczegółach konstrukcyjnych mostów, jako miejscach newralgicznych, których uszkodzenia lub nadmierne wytężenie może bezpośrednio wpłynąć na bezpieczeństwo użytkowania. Możliwość takich analiz pokazano na wybranych przykładach. Przedstawiono przykład lokalnych zmian postaci drgań własnych w wyniku uszkodzenia w węźle mostu kratownicowego, który może być wykorzystany w zagadnieniach eksperckich, dotyczących poszukiwań przyczyny powstałego uszkodzenia. Drugim przykładem są zmiany naprężeń w elemencie zakotwienia cięgna podwieszającego z uwzględnieniem nieliniowych modeli materiału. Modele tego typu mogą być z powodzeniem wykorzystywane przez projektantów, gdyż pozwalają na analizę wybranych detali konstrukcyjnych bez konieczności szczegółowego odwzorowania w modelu całego obiektu, a jedynie wybranego fragmentu.

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Investigation of displacements of road bridges under test loads using radar interferometry – Case study

Cited by 22 publications

References 3 publications

Monitoring of Horizontal Movements of High-Rise Buildings and Tower Transmitters by Means of Ground-Based Interferometric Radar

Monitoring of Horizontal Movements of High-Rise Buildings and Tower Transmitters by Means of Ground-Based Interferometric Radar

Geodetic monitoring of earth-filled flood embankment subjected to variable loads

Analysis of local influences in structural details of the bridges

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