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(-38,-2)

Data Analyses. (-40,4). (-44,4). (-36,4). (-32,4). (-28,4). V= － μ 45= － μ H=21μ. V=58μ 45= － μ H=55μ. V=-34μ 45=45μ H=121μ. V=14μ 45=43μ H=112μ. V=371μ 45=168μH=319μ. 4mm. (-44,0). (-40,0). (-32,0). (-28,0). (-36,0). V= － μ 45= － μ H=23μ. V=-14μ 45=36μ H=425μ.

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(-38,-2)

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  1. Data Analyses (-40,4) (-44,4) (-36,4) (-32,4) (-28,4) V=－μ 45=－μ H=21μ V=58μ 45=－μ H=55μ V=-34μ 45=45μ H=121μ V=14μ 45=43μH=112μ V=371μ45=168μH=319μ 4mm (-44,0) (-40,0) (-32,0) (-28,0) (-36,0) V=－μ 45=－μ H=23μ V=-14μ 45=36μ H=425μ V=9μ 45=-26μ H=338μ V=37μ 45=－μ H=86μ V=244μ45=140μH=364μ -X (-26,0) 4mm (-32,-4) (-28,-4) (-44,-4) (-40,-4) (-36,-4) V=32μ 45=-133μ H=364μ V=－μ 45=－μ H=141μ V=-15μ 45=－μ H=42μ V=30μ45=37μH=250μ V=17μ45=27μH=84μ 4mm 4mm 4mm 4mm 2mm (-38,-2) Rozette Gauge φ50mm was used V=25μ45=42μH=70μ 1

  2. +Y 4mm 4mm (-4,44) (0,44) (4,44) V=-212μ 45=－μ H=－μ V=-460μ 45=－μ H=－μ V=-347μ 45=－μ H=－μ 4mm (-4,40) (0,40) (4,40) V=-120μ 45=－μ H=602μ V=-149μ45=－μH=789μ V=-42μ45=－μ H=-3μ 4mm (-4,36) (0,36) (4,36) V=-157μ 45=-92μ H=33μ V=-158μ 45=-52μ H=40μ V=-78μ 45=-4μ H=48μ (2,34) V=-141μ 45=-42μ H=36μ 4mm (-4,32) (0,32) (4,32) V=-3μ 45=53μH=81μ V=-89μ 45=-3μ H=27μ V=-56μ 45=-5μ H=60μ Rozzette gauge 4mm (0,28) (4,28) (-4,28) V=372μ 45=-152μ H=-701μ V=-98μ 45=-60μ H=-643μ V=-457μ 45=-49μ H=332μ 2mm (0,26) 2

  3. Magnified Image Verification on Device Accuracy Test Result Concrete Deviation：1.7%

  4. Load test on a RC beam Target (West) Target (Centre)

  5. WestStrain Distribution（X component only） 100KN 200KN 300KN 600KN 500KN 400KN 700KN 800KN 900KN →←0.04 0.45→← →←0.21 →←0.03 →←0.25

  6. Test on RC beam West Strain Distribution（X-dir component only） 400KN 500KN （μ） Unit：pixel 以下 Legend・・・ ： Crack observed before loading ―- 　： Crack propagate during loading ： Blot out of the water during loading

  7. 700 Prestressed Concrete Beam Test Summary ２ points bending ４０ｋN increments Up to ２８０ｋN Unit：mm 12 Φ12.7ｍｍ strand configuration PC beam dimension

  8. Surface strain Distance from lower fiber Main Scanning direction 250㎜ 副走査方向 200㎜ 150㎜ 100㎜ Scanned area Smart Scanner Setup Strain gage configuration

  9. Verification Test Results

  10. Verification Test Results １６０ｋN Crack occures

  11. Strain measurement Bottom slab Central line 60mm gauge 30mm gauge Smart Scanner setup at the lower section Strain gauge configuration

  12. Strain measurement Scanned strain countour Pixel （μ） ０KN ：Crack width < 0.08mm 120KN 160K 200KN 240KN 280KN 40KN 80KN ：Crack width > 0.08mm

  13. Strain Measurement Method Beam surface Secondary dir Distance from lower fiber196mm Primary direction Smart Scanner setup Strain gauge

  14. Results Scanner and strain-gauge comparison

  15. Test Result Measured strain contour 80KN 120KN 160KN 200KN 240KN

  16. Tokyo International Airport Background Haneda Runway D （Open October 2010） Runway D - Serviceability assurance 100 years. - Maintenance planning from design stage Wharf Landfill - Wharf: precast slab; field pouring in between - Provide holes for Stick Scanner to inspect concrete condition Holes for stick scanner have been provided since construction stage Maintenance strategy based on long term monitoring scheme to prolong structure’s life span

  17. Field-poured concrete in between two precast concrete slabs Pavement Field poured concrete PCa slab Shear connectors Stirrups Stick Scanner Crack Steel beam Inspection holes Two types: φ22mm and φ26mm

  18. Modification for Tokyo International Airport connector Front grip Rear grip sensor Guide rail ①Resolution：300dpi ②Diameter：φ22mm，φ26mm ③Max. length：615mm ④Total length：890mm ⑤Weight：997g ⑥Connection：PC card - cable

  19. Feature１ It works for two diameters φ22mm Adjust the focal length of sensor Front guide ring Rear guide ring φ26mm modifier

  20. Feature２ 1st turn：right, scan 1 cycle 2nd turn：insert 95mm, left, scan 1 cycle 3rd turn: insert 95mm, right, scan 1 cycle 4th turn: insert 95mm, left, scan 1 cycle Turn right Turn left Insert 95mm Insert 95mm Turn right

  21. Crack evaluation φ22mm Scan （ｍｍ）　 Scale （ｍｍ）　 Dev （ｍｍ）　 0.05 0.03 0.08 0.15 0.02 0.17 0.05 0.08 0.03

  22. φ26mm Crack width Scan （ｍｍ）　 Scale （ｍｍ）　 Dev （ｍｍ）　 -0.03 0.17 0.20 -0.06 0.34 0.40 W=0.15mm 0.31 0.01 0.30 9mm 0.03 0.38 0.35 -0.08 0.25 0.17

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