The Swedish experiment with TSD - ERPUG Roger Nilsson ERPUG...SBUF Projekt. 0 50 100 150 200 250 300...
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The Swedish experiment with TSD Roger Nilsson Skanska
Transcript of The Swedish experiment with TSD - ERPUG Roger Nilsson ERPUG...SBUF Projekt. 0 50 100 150 200 250 300...
The Swedish experiment with TSDRoger NilssonSkanska
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Dr. Roger Nilsson
Skanska since 1991
Senior manager
Global Expert Roads Network
Pavement Materials
Pavement Design
Pavement Management
Private-Public-Partnership
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Global Construction Trends
Current market $10 trillion
Prognosis 2030 >$15 trillion
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> 1,000,000,000 cars 2010 (124)
> 2,000,000,000 cars 2035 (25)
Traffic jam in China 2010 (100 km, ~12 days)
Global Traffic Trends
California drivers paying the price for deficient roads and bridges
“Caltrans said in the report, released last week, that it would need about $8 billion annually for
the next 10 years to reach management and improvement
goals for its highway system, but only $2.3 billion annually has been
budgeted”
Limited funding! - Need for cost effective solutions
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37.551.456606474 +105t
Load +100% (ca 50 Y)Additional axlesMore frequent loading / PlatooningExemptions (+90t)
Deformations?Cracks?Other damages?
Challenges!
LONGITUDINAL STRAIN
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TRANSVERSAL STRAIN
Virttaa test site, T=25C, v=50 km/h, z=150mm
Example of measured strains
LINTRACK/VEROAD, T=23C, 20km/h, z=141mm
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VEROAD calculation
LINTRACK signal
Wheel position [mm]
Temp : 23°C
Speed: 20 km/h
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LINTRACK signal
Wheel position [mm]
Temp : 23°C
Speed: 20 km/h
250um/m
300um/m
MEASURED STRAIN CURVES
MEASURED STRAIN CURVES
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Wheel position [m]
Str
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Measured strain signal
Calculated strain signal
COMPARISON BETWEEN MEASURED AND
CALCULATED TRANSVERSAL STRAIN SIGNAL
E4 “EKET”, 980511, ASG10A, T21/28, 95km/h
AC 160
BC 80
SB 470
− Benkelman Beam (1952)
− LaCroix Deflectograph (1957)
− FWD (Late 1960s)
− Danish Deflectograph (1972)
− Curviamètre (1972)
− RDT (1992-2006)
− HSD (2003 )
− TSD (2010 )
Example of deflection measurements
Traffic Speed Deflectometer (TSD) 2008-2015
• Non-destructive testing
• Structural Assessment of Pavement Systems
Ibdim - Road and Bridge Research Institute
HSD-measurements
− Performed HSD-measurements (0-90km) indicate that the A1 structure is stiff and strong
IRI
Requirements: Class A < 2 mm/m
Class B 2-3.5 mm/m
Class C > 3.5 mm/m
SBUF Project 2014-2017
TSD-measurements 2013-2015
ca.1900 km
FWD
Input PMSv3
Roger Nilsson
Richard Nilsson
Anders Lenngren
Fredrik Lindström
Per Viktorsson
Jonas Ekblad
Sven Agardh
Björn Kullander
SBUF Projekt
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IRI
Test section at Rv40, 90km/h, 10C
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Specifications I66, DC
We are Skanska
