Identyfikatory
Warianty tytułu
Konferencja
European Conference on Buried Flexible Steel Structures (3 ; 24-25.04.2017 ; Rydzyna, Polska)
Języki publikacji
Abstrakty
Steel-ground structures are more susceptible than other bridges to the forces associated with their operation. Among the most difficult forces to measure and interpret are those which cause the occurrence of rapid movements. Electronic sensors are normally used for the evaluation of such movements, such as accelerators, distance meters, LVGT etc. Classical surveying methods make it possible to carry out precise displacement surveys using a "tracking" mode, several times per second, and these can therefore be used to study movements at a frequency of 1 Hz for a range of displacements of at least 1 mm. A higher frequency of registration, while simultaneously increasing the number of measured points, is possible using a photogrammetric method. In the classical sense, photogrammetry is a technique for determining specific geometric features based on measurements of points on images of an object and their mathematical processing. Currently, images are made using widely available high-resolution digital cameras, allowing images to be captured at the desired distance, with good image stabilization and short exposure time. In this paper, we present investigations using a method of measuring these rapid movements with one or more cameras and a variable number of lighting targets. This method includes the installation of lighting for the object, stabilization of the cameras, image capturing and automatic processing. Each measurement is performed using image-matching algorithms and refers to several (at least two) fixed points in the object space. This method was tested on following real objects: (1) a railway bridge during the passage of a number of trains at different speeds; and (2) a rotating footbridge. Objects were photographed using a PointGrey Black Fly camera from a distance of less than 50 m and with a frequency of 50 Hz. The results are presented in the form of two-dimensional displacement vectors of four points with a precision of ±0.5 mm. The course of the measurement and the evaluation of the results indicate the high potential of the method in studying the dynamics of flexible structures. In conclusion, it was stated that the described solution is a concept and is to serve as an inspiration for particular applications. It is now the subject of further development.
Słowa kluczowe
Czasopismo
Rocznik
Tom
Strony
333--345
Opis fizyczny
Bibliogr. 19 poz., rys., tab.
Twórcy
autor
- Poznan University of Technology, Institute of Civil Engineering
autor
- Poznan University of Technology, Institute of Civil Engineering
Bibliografia
- 1. Abdel-Sayed G., Bakht B., Jaeger L.G., 1990: Soil-steel bridges: design and construction. McGraw-Hill Inc., New York (1990).
- 2. Beben D., 2011: Application of the interferometrie radar for dynamic tests of corrugated steel plate (CSP) culvert. NDT & E International, 44 (5): 405—412.
- 3. Bęben D., Mańko Z., 2005: Tests of arch bridge made from corrugated steel plates. Archives of Civil and Mechanical Engineering, V (4): 53-76.
- 4. Brown D.C., 1971: Close-range camera calibration. Photogrammetric Engineering, 37, 855-866.
- 5. Flener E.B., Karoumi R., 2009: Dynamic testing of a soil-steel composite railway bridge. Engineering Structures, 31(12): 2803-2811.
- 6. Fryer, J. G., Bartlett, P., 1989: Photogrammetric Monitoring of Chichester Dam. Surveillance & Monitoring Surveys, University of Melbourne, Australia, pp. 74-85.
- 7. Fu, K.S., Gonzalez, R.C., Lee, C.S.G., 1987: Robotics - Control, Sensing, Vision, and Intelligence, McGrawHill International Edition, 1987.
- 8. Gruen A., 2012: Development and Status of Image Matching in Photogrammetry. The Photogrammetric Record. 27 (137), 36-57.
- 9. Hou X., Yang X., Huang Q., 2005: Using Inclinometers to Measure Bridge Deflection. Journal Bridge Eng., 10(5): 564—569.
- 10. Jiang R., Jauregui D.V., 2010: Development of a digital close-range photogrammetric bridge deflection measurement system. Measurement. 43 (10), 1431-1438.
- 11. Jianga R., Jaureguib D.V., Whiteb K., 2008. Close-range photogrammetry applications in bridge measurement: Literature review. Measurement. 41 (8), 823-834.
- 12. Kersten T., Maas H.-G., 1995: Photogrammetric 3-D Point Determination for Dam Monitoring. Optical 3-D Measurement Techniques III, Eds. Gruen/Kahmen, Wichmann Verlag 1995, 161-168.
- 13. Lacis R., 2016: Structural monitoring of experimental timber-concrete composite bridge. Engineering for Rural Development - International Scientific Conference. Jelgava, 25.-27.05.2016, 74-79.
- 14. Maas H.-G., Hampel U., 2006: Photogrammetric Techniques in Civil Engineering Material Testing and Structure Monitoring. Photogrammetric Engineering & Remote Sensing, 72 (1), pp. 1-7.
- 15. Marques F., Moutinho C., Wei-Hua Hu, Cunha A., Caetano E., 2016: Weigh-in-motion implementation in an old metallic railway bridge. Engineering Structures, 123, 15-29.
- 16.Özgür A., Devrim A., Orhan A., 2014: Photogrammetric deformation monitoring of the Second Bosphorus Bridge in Istanbul. The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XL-5, 71-76.
- 17. Scaioni M., Barazzetti L., Giussani A., Previtali M., Roncoroni F., Alba M.I., 2014: Photogrammetric techniques for monitoring tunnel deformation. Earth Science Informatics, (7) 2, pp 83-95
- 18. Sutton M.A., Orteu J.J., Schreiber H., 2009: Image Correlation for Shape, Motion and Deformation Measurements: Basic concepts, Theory and Applications. Springer Science+Business Media, LLC 2009, 320 p.
- 19. Valença J., Júlio E., Araújo H., 2008: Application of photogrammetry to bridge monitoring. 12th Conference: Structural Faults and Repair 2008 (https:// www.researchgate.net/publication/236941974_Application_ of photogrammetry_to_bridge_monitoring).
Uwagi
Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-da2cceb8-36fa-4b8f-874c-4df270754231