PRAGUE, CZECH REPUBLIC · 2016-11-10 · • DaRTS6 –Oct 2016 Prague, Czech Republic • Members from Australia, Belgium, Denmark, France, Germany, Italy, ... 2013 China RIOH 2013

PRAGUE, CZECH REPUBLIC

20-21 OCTOBER 2016

DaRTS6 – An Introduction to

Deflection at Road Traffic Speed

Brian Ferne, TRL

© Copyright 2016 TRL Ltd

Introduction to DaRTS

2

• Road pavement deflection-measuring technologies now exist to collect data at normal road traffic speeds.

• The Deflection at Road Traffic Speed (DaRTS) group provides an interchange forum to explore how these technologies can be used in future project and network level pavement analyses

• Established 2012 by TRL and the English Highways Agency (now Highways England• DaRTS1 – June 2012 London, UK• DaRTS2 – June 2013 Trondheim, Norway• DaRTS3 - Sept 2014 Blacksburg, USA• DaRTS4 – Sept 2015 Berlin, Germany• DaRTS5 – April, 2016 London, UK• DaRTS6 – Oct 2016 Prague, Czech Republic

• Members from Australia, Belgium, Denmark, France, Germany, Italy, Netherlands, Poland, South Africa, USA


Brief history of deflection measurement

• Earliest measurements under loaded rolling wheel• At relatively slow speeds

• Benkelman beam• Deflectograph (2.5km/h)• Curviameter (18 km/h)

• At traffic speed• Road Deflection Tester, Sweden• Rolling Wheel Deflection, USA• Traffic Speed Deflectometer, Denmark• And many other attempts………


Measuring Rolling Wheel DeflectionCreep speed

Walking speed

Running speed

Traffic speed


HIGH SPEED DEFLECTION?


Principles of the TSD equipment

Deflection velocity [m/s]

Deflection [m]

Deflection velocity / Driving velocity

= Deflection slope [m/m]

=

Deflection velocity [m/s]


Development of the DaRTS devices and their use by country and date

2000? Denmark Greenwood & Danish Road Directorate2005 England Highways Agency/TRL2010 Italy ANAS2011 Poland IBDIM2012 South Africa SANRAL2013 China RIOH2013 USA Comparative trials and demonstrations2014 Australia ARRB2015 Germany BaST2016 The Netherlands RWS2016 Denmark Dynatest


Development of the TSD and its use by country

2000? Denmark Greenwood – Jorgen Krarup2005 England Highways Agency/TRL2010 Italy ANAS2011 Poland IBDIM2012 South Africa SANRAL2013 China RIOH2013 USA Comparative trials and demonstrations2014 Australia ARRB2015 Germany BaST2016 The Netherlands RWS


Development of the TSD by country

2000? Denmark Danish Road Directorate2005 England Highways Agency/TRL2010 Italy ANAS2011 Poland IBDIM2012 South Africa SANRAL2013 China RIOH2013 USA Comparative trials and demonstrations2014 Australia ARRB2015 Germany BaST2016 The Netherlands RWS

DRD status

Susanne Baltzer, Danish Road Directorate

The State Road Network

Min. 1/6 of motorways every year(total of approx. 1500 km)

1/3 of remaining roads every year(total of approx. 2100 km)

Current use

HSD – good/poor bearing capacity




Roger Fairclough

Highways England

Status on the UK use of the TSD

TSD Development 2006-2009

Development of prototype into fully functional research tool

Development of empirical relationship between TSD and Deflectograph

Ready for roll-out of network-level structural condition surveys as proxy for Deflectograph

y = 8E-06x2 + 5E-05x + 0.1838

R2 = 0.7708

0

0.2

0.4

0.6

0.8

1

1.2

1.4

0 50 100 150 200 250 300 350

DFG [µm]

TS

D [

mm

/m]

100m Average, 107 points

Poly. (100m Average, 107 points)

0

100

200

300

400

500

600

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000

Chainage [m]

DFG

Def

lect

ion

[µm

]

DFG N/S Events

Underbridge

x4Hen & chicken on-slip

Isington Lane

Underbridge Overbridge

x3

Surrey boundary Bar markers startSign for Bentley

0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000

Chainage [m]

TSD

Slo

pe [m

m/m

]

Events TSD P100 10m average

Underbridge

x4Hen & chicken on-slip

Isington Lane

Underbridge Overbridge

x3

Surrey boundary Bar markers startSign for Bentley

Deflectograph

TSD

Page 17

Current status of TRASS3

Around 6000 km in 2014

Around 6100 km in 2015

As yet no routine GPR Surveys will start in 2016

Some issues over data quality revealed by QA process

Main line Surveys

This required definition of deceleration limits

1 m/s/s limit embodied in validation software

Around 2500km of slip roads covered so far in 2015/6 but 20% failed validation

Slip road surveys

Outer lane or passing/fast lane not generally used by heavy goods vehicles

This required official procedure for surveying and permitting undertaking

Interim Advice Note drafted

No surveys yet except under police guidance

Outer lane surveys

Current and planned surveys

Page 18

Current use of TSD data in the UK

Deflection slopes converted to network structural condition categories 1 to 4

Categories used to guide scheme selection

Categories used to guide type of further investigation

Categories 1 and 2 suggest less need for slow speed disruptive investigations

Reducing other surveys

This mainly involves conversion of hard shoulder to part-time running lane

TSD surveys can provide guidance on strengthening need or otherwise

SMART motorways

Central decision in England to resurface 80% of HE network

Impossible for HE engineers to directly approve all proposals

Simplified approval process developed based on TSD structural condition categories

Surfacing Schemes

Usage of TRASS data stored in PMS




20

ANAS TSD - acceptance test and calibration

comparison between TSD and FWD

Pavement Management in ANAS network

Ing. Stefano Drusin

[email protected]

ANAS S.p.a.

Direzione Centrale

Ricerca e Nuove Tecnologie

DARTS 18 – 19 June 2012

mailto:[email protected]

21

SS675 IS300 70 km/h date 10-9-2010

0

50

100

150

200

250

300

350

43.1 43.3 43.5 43.7 43.9 44.1 44.3 44.5 44.7

MeasurementFileName=T3201009100006.lp.dist

MeasurementFileName=T3201009100007.lp.dist

FWD

SS 675 IS300 different driving speed 50 - 90 km/h date 10-9-2010

0

50

100

150

200

250

300

350

500 600 700 800 900 1000 1100 1200 1300 1400 1500

MeasurementFileName=T3201009100009.raw MeasurementFileName=T3201009100011.row MeasurementFileName=T3201009100013.row

MeasurementFileName=T3201009100015.raw MeasurementFileName=T3201009100017.row MeasurementFileName=T3201009100019.row

MeasurementFileName=T3201009100021.row MeasurementFileName=T3201009100023.row MeasurementFileName=T3201009100027.row

FWD

The comparison data have

demonstrated good repeatability

of the TSD of its comparability

with the FWD equipment, should

also be considered that some

variables, like test temperature

require additional measures,

change in vehicle speed seems

irrelevant when the speed itself is

contained between 40 and 80

km/h.

It can be concluded that a

qualitative correspondence

between the two devices is

present.

Direzione

Centrale

Ricerche

e Nuove

Tecnologie

ANAS s.p.a. - Codirezione Generale Tecnica - Unità Ricerca e Innovazione – Centro Sperimentale Stradale

Pavement management problemsin ANAS network

directly managed Km 25.420

under concession Km 5.695

Evaluation of Network

Condition

Pavement

Design

Testing of Worksmaintenance of existing road or

new road construction

HOW ANAS PLAN TO MANAGE

IN INTEGRATED WAY

ALL FEATURES




INSTYTUT BADAWCZY DRÓG I MOSTÓW (IBDIM)

IBDiM TSD updateSep 2014

Jacek Sudyka

Adam ZofkaTo be presented @ DaRTS3 at PE2014

24

INSTYTUT BADAWCZY DRÓG I MOSTÓW (IBDIM)

• Road and Bridge Research Institute (IBDiM)

• TSD since 2011

– Fixed 10 ton load on the single (rear) axis

– 6 plus 1 sensors

– Load sensors installed in 2014

• Example projects:

– Trial testing in Germany, Finland, Sweden

– City of Warsaw, Poland, 2012

– Silesian Region, Poland, 2013

– Masovian Region, Poland, 2014

25




SANRAL TSD SAT RESULTS

PLANNED RESEARCH

Louw KannemeyerJune 2013DaRTS2 Workshop

To Correctly Interpret TSD Data – Need To understand pavement response

R104 Instrumented Sections - Flexible







TURNER-FAIRBANK HIGHWAY RESEARCH CENTER

Pavement Structural Evaluation at the Network Level

DaRTS5 Meeting

Session 2

April 26, 2016


Project Objectives

Objectives:

– Assess and evaluate capability of traffic speed deflection-related devices for pavement structural evaluation at network level

– Develop methodologies for enabling use of devices in pavement management


Viable Devices

ARA RWD Greenwood TSD


Devices & Sites

MnROAD Facility

Wright County, MN 18-mile loop

TSD, Curviameter &

RWD

04/07/2014

Demonstration of Network Level Pavement

Structural Evaluation with Traffic Speed

Deflectometer

Samer Katicha

Gerardo Flintsch

DaRTS5 Meeting

April, 26th 2016

Center for Sustainable Transportation Infrastructure

Pooled Fund Team

Pooled fund effort (9 States + FHWA)

FHWA (lead)

CALTRANS, GDOT, IDDOT, IDOT, NDOT, NYDOT,

PennDOT, SCDOT, VDOT

Project team

Engineering & Software Consultants, Inc. (ESCINS)

Project management

Virginia Tech Transportation Institute (VTTI)

Research team

Greenwood Engineering

Testing

Transport Research Laboratory (TRL): Brian Ferne

Expert advice and consulting support


Testing Scope

Two rounds of testing (2 years; 2014 and 2015)

Each round of testing consists of two days

First day:

Device calibration (if needed): morning

30 to 50 miles: afternoon


Testing Scope

Second day:

Testing up to 250 miles (depending on chosen

course)

Testing completed

Total: 4,500 miles (excluding Idaho ~ 500 miles)

Range: 300 to 1,000 miles


Objective

Demonstrate the TSD

Network level structural evaluation

Application in agency’s PMS

Evaluate TSD

Repeatability

Calculation of structural index

Relation to existing condition




2000? Denmark Danish Road Directorate2005 England Highways Agency/TRL2010 Italy ANAS2011 Poland IBDIM2012 South Africa SANRAL2013 China RIOH2013 USA Comparative trials and demonstrations2014 Australia ARRB - Richard Wix 2015 Germany BaST2016 The Netherlands RWS



2000? Denmark Danish Road Directorate2005 England Highways Agency/TRL2010 Italy ANAS2011 Poland IBDIM2012 South Africa SANRAL2013 China RIOH2013 USA Comparative trials and demonstrations2014 Australia ARRB2015 Germany BaST – Dirk Jansen2016 The Netherlands RWS



2000? Denmark Danish Road Directorate2005 England Highways Agency/TRL2010 Italy ANAS2011 Poland IBDIM2012 South Africa SANRAL2013 China RIOH2013 USA Comparative trials and demonstrations2014 Australia ARRB2015 Germany BaST2016 The Netherlands RWS2016 Denmark Dynatest

Monday, October 24, 2016

Research ProgrammeReplacement & Renovation

of Pavements

Arthur van Dommelen

Ministry of Infrastructure and Environment

The Netherlands

Rijkswaterstaat

Research Programme “Replacement & Renovation of Pavements” 2016-2020

Aim

Risk assessment and R&R needs by 2020 of pavements on Dutch road network

• 2015 set-up of Research Programme R&R pavements

• 2016 identification of data sources and

suitable inspection and measurement methods

• 2017 inventory of pavement characteristics and

information gathering by means of measurements and inspections

• 2018 analysis of replacement/renovation needs; formulating recommendations

45 24-10-2016

Rijkswaterstaat

Research Topics 2016-2018

1. bearing capacity

• TSD

• Curviameter

2. culverts

3. robustness of pavement and road design against changes in traffic and climate conditions

46 24-10-2016

Focus 2016


Development of the DaRTS devices and their use by country and date

2000? Denmark Greenwood & Danish Road Directorate2005 England Highways Agency/TRL2010 Italy ANAS2011 Poland IBDIM2012 South Africa SANRAL2013 China RIOH2013 USA Comparative trials and demonstrations2014 Australia ARRB2015 Germany BaST2016 The Netherlands RWS2016 Denmark Dynatest


Dynatest RWD or RPT? Ready 2017?

48


Summary on the measurement of deflection at traffic speed

Now 10 or more Greenwood TSDs in use

Other devices in operation

Further devices under development

Range of implementation from regular network surveys to research

Range of interpretation from simple to complex

Much potential for future developments and wider application

Learn more at DaRTS2017 - part of:

4924-10-2016

Documents

PRAGUE, CZECH REPUBLIC · 2016-11-10 · • DaRTS6 –Oct 2016 Prague, Czech Republic • Members from Australia, Belgium, Denmark, France, Germany, Italy, ... 2013 China RIOH 2013