Determination of the Durability of Ferroconcrete Bridge Beams Reinforced by Composite Strips

Panchenko, O. V.; Ivanyts’kyi, Ya. L.; Kun, P. S.; Zhuravskyi, Oleksandr

doi:10.1007/s11003-018-0121-3

Cited by 6 publications

(3 citation statements)

References 3 publications

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“…New possibilities and prospects for applying the video processing technique on the DIC basis for the reinforced concrete structures destruction mechanisms and energy criteria determining can be found in previous studies 17–19 …”

Section: Technique For Measuring the Bridge Span Elements Movementmentioning

confidence: 99%

“…The disadvantage of the known LPS is the use of an unprotected screen, which is influenced by the external environment and illumination. In order to reduce the effect of the external illumination change, a threshold color procedure algorithm was used 18 . However, this algorithm is not effective in the presence of speckles in the image and requires operator participation during the choice of the binarization threshold, depending on the change of illumination conditions day/night.…”

Section: Technique For Measuring the Bridge Span Elements Movementmentioning

confidence: 99%

“…However, this algorithm is not effective in the presence of speckles in the image and requires operator participation during the choice of the binarization threshold, depending on the change of illumination conditions day/night. There are also a number of limitations in known LPS 16–18 for a screen location choice because the laser ray should be directed to the screen at an angle close to 90°, and, as we know, the dependence of the error of the deflection measuring versus the incidence angle between laser ray and the plane of recording device screen has not been studied previously. In addition, the dual‐screen systems offered by Myung and Jeon are expensive.…”

Section: Technique For Measuring the Bridge Span Elements Movementmentioning

confidence: 99%

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Multilaser spot tracking technology for bridge structure displacement measuring

Maksymenko

Sakharuk

Ivanytskyi

et al. 2020

Struct Control Health Monit

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Summary During the structural health monitoring of bridge structures, simultaneous noncontact determination of relative displacements in different points is preferred. The existing measurement displacement methods and systems used for bridge structures deprived of this ability or have the low accuracy and thus automation level that makes their usage for long‐term monitoring of bridge structure elements becomes impossible. To avoid the imperfections of existing methods and determining displacements simultaneously in different construction points, we proposed to use the laser spot tracking technology, in which the laser modules are mounted in certain points, and their rays are directed to the translucent screen of a recording device. After screen images recording and processing, one determines displacements of different spots formed by the laser modules on the translucent screen by specialized software. Potential opportunities for this technique are demonstrated during research of a concrete beam deflection in laboratory conditions. The errors of the proposed measurement algorithm were analyzed using computer simulation and laboratory study. The influence of laser modules and screen different spatial positions on the beam deflection measurement was also estimated. Practical application of the proposed system for underground crossing overlap vibration measurements has been showed. Based on the obtained data, several evaluations of its technical state and the residual bearing capacity of a reinforced concrete are made.

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Section: Technique For Measuring the Bridge Span Elements Movementmentioning

confidence: 99%

Section: Technique For Measuring the Bridge Span Elements Movementmentioning

confidence: 99%

Section: Technique For Measuring the Bridge Span Elements Movementmentioning

confidence: 99%

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