The Latest Infrastructure Inspection Technology USA Hiro Presentation.pdfThe Latest Infrastructure...
Transcript of The Latest Infrastructure Inspection Technology USA Hiro Presentation.pdfThe Latest Infrastructure...
The Latest Infrastructure Inspection Technology
November, 2018
Hiroyuki KatoVice President
NEXCO-West USA, Inc.
Background : NEXCO-West
1
Used be a government agency (Japan Highway) Privatized in 2005 and became NEXCO-West
Pilot project in Florida Keys (August, 2009)
2
Motivation
Measuring Crack Spacing
NBI Rating
Structurally
Deficient
(SD)
Chain Drag during Lane Closure
3
AASHTO Element Level Inspection
Condition State Description
1 Good
2 Fair
3 Poor
4 Severe
Rating Description
9 Excellent
8 Very good
7 Good
6 Satisfactory
5 Fair
4 Poor
3 Serious
2 Critical
1 Imminent Failure
0 Failed
MAP-21 requires to report
Element Level Inspection Results for National Highway
Systems
Routine inspection every 2 years (mainly by Visual and hands-on inspection)
Current practice for bridge deck inspection
Chain Dragging and Hammer Sounding technique are widely used
4
Deck Top Scanning System (DTSS)
IR cameraLine scan camera
Line scan camera
Line scan camera
IR camera
Raw and processed IR image
Visual image
13″ (4 m)
5
Infrared Thermography Technology
6
Benefit
7
Deficiency Map for Bridge Decks
8
Liberty St.
North Bound
South Bound
South
DelaminationUnsound patch
Our Experience – Network inspection
9
Our Experience (Long distance inspection)
10
Our Experience (Building in France)
1111
Current Project (Subway Tunnel)
1212
360°Concrete Surface Evaluation
13
Sub-surfaceEvaluation
Surface Evaluation
Highway SpeedInspection
Stationary Inspection
Long DistanceImaging
Short Distance PrecisionImaging
14
Introducing the US product to Japan
15
We are serving as a ‘Bridge’ between U.S. and Japan to exchange latest technologies for their mutual benefit
Bridge between U.S. and JapanExchange of: - Knowledge- Experience- Technologies
16
Thank you very much! ありがとうございました。
Hiroyuki Kato
Vice PresidentNEXCO-West USA, Inc.
http://www.w-nexco-usa.com/