CECAR6 PRESENTATION 1/20

JSCE’s Coping Strategy
at Task Force for Infrastructure
Maintenance and Renewal

Japan Society of Civil Engineers

Copy right (c) 2013 Japan Society of Civil Engineers, All rights reserved.

CECAR6 PRESENTATION 2/20

IMPLEMENT PROPER MAINTENANCE AND
RENEWAL ON INFRASTRUCTURE – NEEDS, 1/4
INFRASTRUCTURE

Base for social and economic activities

Aging keeps going
If not properly maintained, it makes difficult to: Maintain safe and wealthy people’s living
 Sustainably contribute to vigorous social economic growth

Collapse of Bridge in MinnesotaSource: Minnesota Department of Transportation

Copy right (c) 2013 Japan Society of Civil Engineers, All rights reserved.

Fall of Ceiling/Bulkhead Boards at Sasago Tunnel, JapanSource : Ministry of Land, Infrastructure, Transport and Tourism

CECAR6 PRESENTATION 3/20

IMPLEMENT PROPER MAINTENANCE AND RENEWAL ON INFRASTRUCTURE – 2/4

Aging of Japan’s Infrastructure
FY2020

FY2030

8%

28%

53%

155,000 EA for L>15m

River Control
Facility

23%

37%

60%

10,000 EA (Ones w/ unidentified yrs built counted as 50 yrs or older)
SewerConduits

2%

7%

19%

5%

25%

53%155,000 EA for L>15m
Port Quaywalls

Source: Metropolitan Expressway Council
3rd Meeting for Expressway Rehabilitation

Number of damages / km

Road Bridges

FY2010

Average 114 ea/km< 19 yrs

5,000 EA

Ratios of infrastructure of 50 years or older since service
commencement

20 - 29 yrs

30 - 39 yrs> 40 yrs

Number of damages per kilometer and years of service atMetropolitan Expressway (as of Apr 2011)

Mumei Bridge (Two-span steel
simple truss) fell in 2007at the border of Kagawa andTokushima Prefectures

Car accident inducedby road cave-in
above sewer conduitin Nagoya City in 2009

Damage examples from infrastructure aging
Copy right (c) 2013 Japan Society of Civil Engineers, All rights reserved.
Source : Ministry of Land, Infrastructure, Transport and Tourism

CECAR6 PRESENTATION 4/20

IMPLEMENT PROPER MAINTENANCE AND RENEWAL ON INFRASTRUCTURE – 3/4

Example 1 – Damage on Kisogawa Bridge

Damaged Node
Kisogawa Bridge• National Highway Route 23
in Kuwana-City, Mie Pref.
• Steel simple truss
L=858.5 meters andW=11.8 meters• Built in 1963
• 53,000 vehicles/day

Steel Rupture

Repair

Gusset Plates

Fix Cover Plates

Saddle, temporary support
Copy right (c) 2013 Japan Society of Civil Engineers, All rights reserved.

CompleteSource : Ministry of Land, Infrastructure, Transport and Tourism

CECAR6 PRESENTATION 5/20

IMPLEMENT PROPER MAINTENANCE AND RENEWAL ON INFRASTRUCTURE – 4/4

Example 2 – Accident at Sasago Tunnel

To Nagaya

The accident occurred in Sasago Tunnel, Chuo Expressway Inbound towards Tokyo
at 0803hrs on 2 December 2012. Ceiling and bulkhead boards for ventilation fell along
the inbound bore for 140 meters long. Three vehicles were caught by fallen ceiling boards
to cause fire on two of them and nine dead and two injured.
Sasago Tunnel InboundTo Tokyo

Location of Accident

Route 20 TunnelLongitudinal Section of Sasago Tunnel
Section of Sasago Tunnel

Board B:
5,010 x 1195 x 90
1.385 ton/EA

In the Bore after boards fell

Bulkhead & Bolts:
5,300 x 1,100 x 100
1.448 tone/EA

ExhaustDuct

Sasago Tunnel Inbound to Tokyo
Sasago Tunnel Inbound to Tokyo

Blower-in
Duct

Board A:
5,010 x 1195 x 80
1.160 ton/EA
Vent
Openings

Feb 1976: Structure compSep 1977: Boards compDec 1977: In service

Copy right (c) 2013 Japan Society of Civil Engineers, All rights reserved.

Two lanes w/passing on the right( Photo taken on 5 Dec 2012

Source : Ministry of Land, Infrastructure, Transport and Tourism

CECAR6 PRESENTATION 6/20

JSCE’S COPING STRATEGYAT TASK FORCE FOR INFRASTRUCTURE
MAINTENANCE AND RENEWAL – 1/9
 Infrastructure as important assets of the people
 Implement its maintenance and renewal in an efficient manner Civil engineers’ important role

Copy right (c) 2013 Japan Society of Civil Engineers, All rights reserved.

CECAR6 PRESENTATION 7/20

JSCE’S COPING STRATEGY ATTASK FORCE FOR INFRASTRUCTURE MAINTENANCE AND RENEWAL – 2/9
TOP PRIORITY ISSUE 1/5 – Systematize the knowledge on infrastructure
maintenance and renewal
 Background The knowledge and technologies on infrastructure maintenance andrenewal has been neither well developed nor systematized.
 Plans set out Address the issue of systematization of knowledge on infrastructure
maintenance and renewal ( “knowledge systematization”) toestablish “Infrastructure maintenance engineering”.
 Actions to take Classify and systematize basic principles, terminology, technology,assessment methodology etc. and compile maintenance andrenewal knowledge into textbooks/handbooks complying withknowledge systematization.

Copy right (c) 2013 Japan Society of Civil Engineers, All rights reserved.

CECAR6 PRESENTATION 8/20

JSCE’S COPING STRATEGY ATTASK FORCE FOR INFRASTRUCTURE MAINTENANCE AND RENEWAL – 3/9TOP PRIORITY ISSUE 2/5 – Procure and train researchers and engineers
 BackgroundThere are not enough resources in researchers and engineers whoare with interdisciplinary wide-ranging knowledge and attention inaddition to well-versed expertise in structural design, construction
methodology, maintenance record compilation, environmental
constraints etc.

 Plans set out
Clarify capabilities and responsibilities required and draft new policies
for training them.
 Actions to take
 Examine details and approaches for school and continuing
education/training of specialists.
Copy right (c) 2013 Japan Society of Civil Engineers, All rights reserved.

CECAR6 PRESENTATION 9/20

JSCE’S COPING STRATEGY ATTASK FORCE FOR INFRASTRUCTURE MAINTENANCE AND RENEWAL – 4/9
TOP PRIORITY ISSUE 3/5 – Establish legal and financial systems to support
maintenance and renewal endeavors
 Background

Legal and institutional obligations under existing circumstances forinspection, diagnosis, soundness decisions etc. are not sufficient forsome infrastructure. Authorization given at maintenance andrenewal sections is limited in promoting the works.

 Plans set out+ Examine and take aim to establish the enforcement of legal andsystematical obligations and the arrangements which enable
receiving technical supports from the outside of organizations.
 Actions to take Assess the structure and roles of the supporting organizations forregional infrastructure maintenance and renewal.

Copy right (c) 2013 Japan Society of Civil Engineers, All rights reserved.

CECAR6 PRESENTATION 10/20

JSCE’S COPING STRATEGY ATTASK FORCE FOR INFRASTRUCTURE MAINTENANCE AND RENEWAL – 5/9
TOP PRIORITY ISSUE 4/5 – Adjust bidding system and contracts
 Background

Maintenance works are relatively small and complicated and it
makes efficient project implementation difficult for contractors.

 Plans set out
Propose procurement schemes to enable technologies at privatecompanies be fully exerted.
 Actions to take Create the guidelines for the contracts of comprehensive
maintenance projects applying PPP/PFI schemes and ofmaintenance extending over certain long enough period for locallyrooted contractors.
Copy right (c) 2013 Japan Society of Civil Engineers, All rights reserved.

CECAR6 PRESENTATION 11/20

JSCE’S COPING STRATEGY ATTASK FORCE FOR INFRASTRUCTURE MAINTENANCE AND RENEWAL – 6/9
TOP PRIORITY ISSUE 5/5 – Seek people’s understanding and cooperation
 BackgroundMaintenance and renewal projects have not gained people’s
sufficient understanding although the efforts have actually beenundertaken.

 Plans set out
Cause people understand that the efforts for infrastructure
maintenance and renewal are attractive and prideful works and getbroad supports from the society.
 Actions to take Enhance attractiveness by creating story telling of the maintenance.
Copy right (c) 2013 Japan Society of Civil Engineers, All rights reserved.

CECAR6 PRESENTATION 12/20

JSCE’S COPING STRATEGY ATTASK FORCE FOR INFRASTRUCTURE MAINTENANCE AND RENEWAL – 7/9
NEXT STEPS TO TAKE
JSCE will: Put these outcomes from the task force at the heart of its activities
 Propel researches on the coping strategy at research committees
 Promote cross-cutting approach by setting up ad-hoc committees
 Seek people’s understanding through these approaches

Copy right (c) 2013 Japan Society of Civil Engineers, All rights reserved.

CECAR6 PRESENTATION 13/20

EXAMPLES –MAINTENANCE AND RENEWAL IN JAPAN Lifetime improvement program for bridges
 Development on sensing and informationtechnology

Copy right (c) 2013 Japan Society of Civil Engineers, All rights reserved.

CECAR6 PRESENTATION 14/20

LIFETIME IMPROVEMENT PROGRAM FOR BRIDGES – 1/4
Preventive Maintenance Scheme for Road Bridges
Demands for
upgraded
performance

Progressive Aging

Current facts, however,Don’t Look

Fail to Detect

Put off to Solve

Nochangeleads toIncrease of potentiallyaccident-inducing bridges

Copy right (c) 2013 Japan Society of Civil Engineers, All rights reserved.

5 Plans for Inspection:
1. Systematic implementation
2. Reliability Assurance
3. Technological Development
4. Provision of Base for 3.
5. Database MaintenanceCECAR6 PRESENTATION 15/20

LIFETIME IMPROVEMENT PROGRAM FOR BRIDGES – 2/4
Bridge Inspection at National Highways of Central Government Administrated
直轄国道の橋梁点検• 直轄国道では、供用後2年以内に初回点検を実施し、2回目以降は5年に1Implement 1) the 1st inspection within 2 years after service commenced,and 2) routine inspection in every 5 years
回の頻度で定期的に点検を実施＜Outline of Routine Inspection＞

Servicecommence

Within2 years

1stInspection

Within5 years

2ndInspection

Within5 years

3rdInspection

Repeat Routine every 5 years

Copy right (c) 2013 Japan Society of Civil Engineers, All rights reserved.

CECAR6 PRESENTATION 16/20

LIFETIME IMPROVEMENT PROGRAM FOR BRIDGES – 3/4
Status of Bridge Inspection by Local Governments

Out of 1,759 Local Governments, ones implementing inspection including routine and urgent
counts 1,719 (98%) in April 2013; 67 Prefectures and designated cities – 67 (100%)
 1,692 municipalities – 1,652 (98%)

Not yetimplemented:
40 (2%)

Implemented:
182 (10%)

1,799 Local
Governments

Not yetimplemented:
1,617 (90%)

1,692 Local
Governments

Implemented:
1,652 (98%)

SEP 2007

Copy right (c) 2013 Japan Society of Civil Engineers, All rights reserved.

APR 2013

Source : Ministry of Land, Infrastructure, Transport and Tourism

CECAR6 PRESENTATION 17/20

LIFETIME IMPROVEMENT PROGRAM FOR BRIDGES – 4/4Set-up Ratio of Maintenance Program along Lifetime Improvement at Local Governments
Ration in Number ofLocal Governments

2008

2009

2010

2011

2012

Ratio in Number of Bridges

2013

Copy right (c) 2013 Japan Society of Civil Engineers, All rights reserved.

Prefectures
andDesignated
CitiesPrefectures
andDesignatedCities

Municipalities

Municipalities

TOTAL

TOTAL

2008

2009

2010

2011

2012

2013

Source : Ministry of Land, Infrastructure, Transport and Tourism

CECAR6 PRESENTATION 18/20

DEVELOPMENT ONSENSING AND INFORMATION TECHNOLOGY – 1/2
Monitoring System at Tokyo Gate Bridge•Optical Fiber Sensing•

Monitor Strain and Vibration•Monitor Normal and Long-term Conditions•Early Detection of Aging and Damages

Transmit via
Optical Fiber

Monitor Deformation

Monitor Accelaration

StrainWatch on Vehicle Loads

Watch on Abnormality

Watch on Vehicle Typesand Loads

Data Center

Source : METI Journal, Ministry of Economy, Trade and Industry
Copy right (c) 2013 Japan Society of Civil Engineers, All rights reserved.

CECAR6 PRESENTATION 19/20

DEVELOPMENT ONSENSING AND INFORMATION TECHNOLOGY – 2/2
Research on Bank Deformation Detection Technology by Mobile Mapping System
Develop long–distance scanning device with high precision plus density and its dataprocessing software to detect existing and potential damages, deformation and settlement
on embankments by high resolution cameras and laser scanners mounted vehicles

Challenges – Innovate scanners to meet theabove requirements from 100-meter distanceand data processing software to grasp 3D
deformation
Copy right (c) 2013 Japan Society of Civil Engineers, All rights reserved.

Example scanned and processed data
Source : Ministry of Land, Infrastructure, Transport and Tourism

CECAR6 PRESENTATION 20/20

IMPLEMENT PROPER MAINTENANCE AND
RENEWAL ON INFRASTRUCTURE
INFRASTRUCTURE

Base for social and economic activities

Aging keeps going
If not properly maintained, it makes difficult to: Maintain safe and wealthy people’s living
 Sustainably contribute to vigorous social economic growth

JSCE will put Top 5 Priority Issues proposed by its task force at the heart of activities:
1. Systematize the knowledge on infrastructure maintenance and renewal
2. Procure and train researchers and engineers
3. Establish legal and financial systems to support maintenanceand renewal endeavors
4. Adjust bidding system and contracts
5. Seek people’s understanding and cooperation
Address the issue of knowledge systematization to establish“Infrastructure maintenance engineering”
Copy right (c) 2013 Japan Society of Civil Engineers, All rights reserved.