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Innovative LIDAR           Solutions Conference         June 24 - 26, 2009 - Toronto, CanadaStructural Survey, Inspection ...
Terrestrial Laser Scanning projects          a. Bridge survey and structural          deformation analysis          b. Rai...
Axios river motorway bridge
Axios river motorway bridge
Axios river motorway bridge
Axios river motorway bridge                            Project tasks•   Establishment of geodetic network (GGRS’87)•   TLS...
Axios river motorway bridgeProcessing and Results
Axios river motorway bridgeProcessing and Results
Axios river motorway bridgeProcessing and Results
Axios river motorway bridgeProcessing and Results
Axios river motorway bridgeProcessing and Results
Axios river motorway bridgeProcessing and Results
Agios Stefanos railway tunnel
Agios Stefanos railway tunnel
Agios Stefanos railway tunnel                            Project tasks•   Establishment of geodetic network (GGRS’87)•   T...
Agios Stefanos railway tunnelProcessing and Results
Agios Stefanos railway tunnelProcessing and Results
Agios Stefanos railway tunnelProcessing and Results
Agios Stefanos railway tunnelProcessing and Results
Agios Stefanos railway tunnelProcessing and Results
Agios Stefanos railway tunnelProcessing and Results
Survey and modelling of road interchanges                    for the design and evaluation of safety                    im...
Survey and modelling of road interchanges                     for the design and evaluation of safety                     ...
Survey and modelling of road interchangesfor the design and evaluation of safetyimprovement measures    Processing and Res...
Survey and modelling of road interchangesfor the design and evaluation of safetyimprovement measures    Processing and Res...
Survey and modelling of road interchanges    for the design and evaluation of safety    improvement measures         Proce...
Survey and modelling of road interchangesfor the design and evaluation of safetyimprovement measures    Processing and Res...
Conclusions…        Any questions?Visit: www.astrolabe.gr www.jgc.gr
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Structural survey, inspection and evaluation using LS technology

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A presentation by Michael Xinogalos, Surveying Engineer NTUA 1988, Technical Director of ASTROLABE ENGINEERING at Innovative LIDAR Solutions Conference - Toronto 2009 (www.astrolabe.gr - www.laseraction.eu)

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Transcript of "Structural survey, inspection and evaluation using LS technology"

  1. 1. Innovative LIDAR Solutions Conference June 24 - 26, 2009 - Toronto, CanadaStructural Survey, Inspection and Evaluation Using Laser Scanner Technology Michael Xinogalos Surveying Engineer NTUA ASTROLABE ENGINEERING / JGC
  2. 2. Terrestrial Laser Scanning projects a. Bridge survey and structural deformation analysis b. Railway tunnel survey and structural inspection in comparison to theoretical geometry c. Survey and modelling of road interchanges for the design and evaluation of safety improvement measures
  3. 3. Axios river motorway bridge
  4. 4. Axios river motorway bridge
  5. 5. Axios river motorway bridge
  6. 6. Axios river motorway bridge Project tasks• Establishment of geodetic network (GGRS’87)• TLS survey with Optech ILRIS36D: • 6 scanning positions (from newest bridge) • Average resolution 2-3 cm • Georeferencing: 6 scanning stations, 12 circular (d:50 cm) targets, additional “natural” control points• Conventional survey for remaining details (southern side)• Basic processing of TLS data and other measurements• 3D features collection (deck geometry, piers, road level, etc)• Geometric evaluation and deformation analysis
  7. 7. Axios river motorway bridgeProcessing and Results
  8. 8. Axios river motorway bridgeProcessing and Results
  9. 9. Axios river motorway bridgeProcessing and Results
  10. 10. Axios river motorway bridgeProcessing and Results
  11. 11. Axios river motorway bridgeProcessing and Results
  12. 12. Axios river motorway bridgeProcessing and Results
  13. 13. Agios Stefanos railway tunnel
  14. 14. Agios Stefanos railway tunnel
  15. 15. Agios Stefanos railway tunnel Project tasks• Establishment of geodetic network (GGRS’87)• TLS survey with Optech ILRIS36D: • 8 scanning positions (6 inside – 2 outside) • Average resolution 1-2 cm • Georeferencing: 8 conical targets, additional control points• Conventional survey of ground surface above tunnel• Basic processing of TLS data and other measurements• 3D modelling of tunnel and ground above, H and V section extraction• Inspection in comparison to theoretical geometry
  16. 16. Agios Stefanos railway tunnelProcessing and Results
  17. 17. Agios Stefanos railway tunnelProcessing and Results
  18. 18. Agios Stefanos railway tunnelProcessing and Results
  19. 19. Agios Stefanos railway tunnelProcessing and Results
  20. 20. Agios Stefanos railway tunnelProcessing and Results
  21. 21. Agios Stefanos railway tunnelProcessing and Results
  22. 22. Survey and modelling of road interchanges for the design and evaluation of safety improvement measures Project tasks (1/2)• Selection of “Reduced Safety” locations by the Maintenance Department (Greek Ministry of Public Works) For each location:• Establishment of geodetic network (GGRS’87)• TLS survey with Optech ILRIS36D and lifting device: • Approx. 10 scanning positions • Average resolution 5-10 cm • Georeferencing: scanning stations, conical targets
  23. 23. Survey and modelling of road interchanges for the design and evaluation of safety improvement measures Project tasks (2/2)• Basic processing of TLS data and other measurements• Vector drawing and orthophoto creation as background for design• Design of safety improvement measures (additional lanes, vertical and horizontal signage, changes in traffic regulation, closure of secondary roads, etc.)• 3D modelling of design elements• Modelling of vertical signage (existing and new)• Generation of video fly - through and driving simulations (before-after)• Evaluation of design by the Maintenance Department and Local Authorities
  24. 24. Survey and modelling of road interchangesfor the design and evaluation of safetyimprovement measures Processing and Results
  25. 25. Survey and modelling of road interchangesfor the design and evaluation of safetyimprovement measures Processing and Results
  26. 26. Survey and modelling of road interchanges for the design and evaluation of safety improvement measures Processing and ResultsBefore After
  27. 27. Survey and modelling of road interchangesfor the design and evaluation of safetyimprovement measures Processing and Results
  28. 28. Conclusions… Any questions?Visit: www.astrolabe.gr www.jgc.gr
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