Transcript Neil Hoult - Canada Foundation for Innovation

Civil Infrastructure Research
Answering critical infrastructure questions
Neil Hoult and Ian Moore,
Department of Civil Engineering
Outline
Three example projects:
• Deteriorated culvert testing
• Rehabilitated culvert testing with novel sensors
• Field test of a bridge
Future facilities
Deteriorated Culvert Testing
Objectives:
• Determine capacity of deteriorated culverts
Impact for partner:
• Optimize rehabilitation / replacement strategies
Partners:
• Ministry of Transportation Ontario (MTO)
• National Cooperative Highway Research Program
(NCHRP)
Culvert Deterioration
(Courtesy of Taher and Moore, 2011)
Experimental Specimens
Invert
Invert
a) Heavily deteriorated
b) Lightly deteriorated
Crown
SP
SP
Invert
Thickness distribution for corroded culvert
Invert
Thickness distribution for corroded culvert
mm
The Buried Infrastructure Lab
Built with CFI, MRI and industry funding
Loading set-up
Simulated vehicle loading
Failure mechanism of heavily deteriorated specimen
Local Bending
Local Buckling
Results: Predicted vs. experimental forces in
structure – Lightly deteriorated specimen
CSP2 SA 2ft
Vehicle
AppliedLoad
force(kips)
(kips)
0
5
10
15
20
25
30
35
0
0
-2
-40
CHBDC
-4
-60
-80
AASHTO
-6
-120
CANDE
-8
-140
Katona
Experiment 1st
-100
-10
Experiment 2nd
-160
Moore
-12
-180
0
20
40
60
80
100
Vehicle
Load (kN)
(kN)
Applied force
120
140
160
(kip/ft)
in Structure
ForceThrust
force (kip/ft)
Thrust
force ( kN/m)
(kN/m)
in Structure
Force
-20
Rehabilitated Culvert Testing
Objectives:
• Determine capacity of rehabilitated structures
Impact for partner:
• Develop accurate procedures for rehabilitation design
Partners:
• KWH Pipe
• Lafarge
• Ministry of Transportation Ontario (MTO)
• National Cooperative Highway Research Program (NCHRP)
• Ontario Concrete Pipe Association
Fibre Optic Sensors
Purchased with CFI, MRI and industry funding
• Optical Backscatter
Reflectometer (OBR 4600)
developed by Luna
Technologies
• Allows for distributed
measurements of strain
• Characterize behaviour in a
way that has not been possible
Pipe Rehabilitation using slip lining
Novel Measurements – HDPE Liner
Bridge Field Testing
Objectives:
• Develop tool for assessment and damage detection in
bridges
Impact for partner:
• Extend bridge service lives
Partners:
• Ministry of Transportation Ontario
• Transport Canada
Test Site: Black River Bridge
Fibre optic layout
Fibre optic vs strain gauge measurements
Bridge response
Future Facilities
Funded by CFI, MRI and industry
Geotechnical Testing – water and sewer pipes, culverts
• Deep burial and erosion simulator
• Pipe deterioration facilities
• High speed distributed strain measurement (?)
Structures
• Moving load simulator
• Deterioration facilities
• Bridge component testing
Thanks!
Funding and support provided by:
Canada Foundation for Innovation
KWH Pipe
Lafarge
Ministry of Transportation Ontario
National Cooperative Highway Research Program
Natural Science and Engineering Research Council of Canada
Ontario Concrete Pipe Association and M-Con
Ontario Ministry of Research and Innovation
Transport Canada
Research conducted by:
Bryan Simpson, Ryan Regier and Van Thien Mai
Assisted by:
Graeme Boyd, Andre Brault, Adam Hoag, Keelin Scully, Trevor
Smith, Paul Thrasher, Brian Westervelt and anyone I have forgotten!