2013 JSCE Annual Meeting
International Panel Discussion

Infrastructure Maintenance and Renewal
for Achieving Sustainable Society

September 4, 2013
Copy right (c) 2013 Japan Society of Civil Engineers, All rights reserved.

America in Ruins:the Decaying
Infrastructure
by Pat Choate & Susan Walter「荒廃するアメリカ」
岡野行秀 監訳（1982）（Yukihide Okano）
Concentrated constructions ofinfrastructure in 1930s → rapidly
increasing “Aging” in US.
Insufficient budgeting for maintenance and renewal → accidents andtroubles in infrastructure in US. A warning to Japan’s infrastructure
Now after 30 years, Japan faces the same situation.

Sasago-Tunnel Accident in Chuo-Expressway on Dec. 2, 2012
Adhesive Anchor Bolt

Celling Board

Celling Board

Bulkhead Board

Celling Board

Celling Board

Bulkhead Board

Tunnel Length : 4,417m,Cross-Sec. Traffic: 40 thou. Veh./day- Ceiling board suddenly fell down around 100 m
on running vehicles, and 9 dead, 2 insured.
- Nation-wide urgent inspection of tunnels implemented- Required around two months to re-open- Under investigation, however, the suitability of inspection of theanchor bolts as well as of its structural design perhaps suspected
Copy right (c) 2013 Japan Society of Civil Engineers, All rights reserved.

3

Introduction: What are issues and problems?

- Rapid increase in “Aging Infrastructure” andincreasing importance of maintenance and renewal- Budgetary capacity for infrastructure in “downsizingJapan” in population- Usually poor concern of general public, politicians,
and even engineers! except just when shocking
accidents occur- Even when well-understood, often regarded as just aproblem of “money”

Coordinator: Hitoshi Ieda
Professor, Dr. Eng., P.E.
Dept. of Civil Engineering, The University of Tokyo- Former Vice-President of JSCE (2011-2013)- Member, Infrastructure Development Council, Transport
Policy Council, and National Land Development Council,MLIT, Japan- Chairman, Committee on Infrastructure Maintenance
Strategies, MLIT, Japan (2012-)- Member of JSCE’s Special Committee of Infrastructure
Maintenance (2012-)

Variety of InfrastructureRiverMore
NaturalSlope
Levee

Reservoir

Coast

For Daily Use
Sewage Pipe

BridgeFor Emergency
DamSlope protection

Sediment Control

Embankment

Floodgate

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

More Artificial6Establishing Systematic and SophisticatedMaintenance Systems

Tokaido Shinkansen (since 1964)
Number of Operation : 333 trains / day
Number of Passengers : 391 thou. pax. / day
Operating Speed: 270 km/h
Average Delay: 0.6 min. / train
No passenger fatalities or injuries till now
Most strict noise/ vibration codes
Copy right (c) 2013 Japan Society of Civil Engineers, All rights reserved.

Track Maintenance:- Traditional ballast track- World severest train load
- Computer assisted 10 day cycle
maintenance system- Automated measurement oftrack irregularity- Mechanized maintenance work 2

Severely Used Motorway: Tokyo Metropolitan Expressway

The Network- Constructed since 1962
- Present Route Length: 301 kms (mostly 4 lanes)- Structure: bridges (80%), tunnels (10%)- Traffic Volume: 1.1 mil. veh./day- Cross Sec. Traffic: 86 thou. veh./day (Central Tokyo )- Illegally Over-loaded Large Vehicles: often observed
but not yet suitably controlled and eliminated- Repair-required damages: quite often found
Copy right (c) 2013 Japan Society of Civil Engineers, All rights reserved.

1

Technological Potential for Better Maintenance and Renewal

Tunnel Lining Scan Vehicle

Inspection Robot used inTokyo Metropolitan. ExpresswayInfraredCamera
Copy right (c) 2013 Japan Society of Civil Engineers, All rights reserved.

Track Inspection Train-Set in Shinkansen

5Human Resources for Maintenance and Renewal

Daily Inspection

Cable Inspection ofSuspension Bridge

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

Periodical Deep-Inspection

Re-pavement

Track Maintenance4Points of Proposals by JSCE1)

To systematically re-organize theories, knowledge,
technologies, and experiences on maintenance and renewal inindividual fields of infrastructure, and to establish“Infrastructure Maintenance Engineering” in the near future

2)

To enrich human resources on infrastructure maintenanceengineering in quality and in quantity, and to reinforce related
institutional systems

3)

To establish stable institutional systems for infrastructure
maintenance and renewal in legislative and financial aspects

4)

To create realistic and suitable contract systems forinfrastructure maintenance5)

To enhance the understanding and support of people for
infrastructure maintenancePanel Discussion
RESOURCE SPEAKERS:
S1) Mr. Gregory Diloreto, President, ASCE
S2) Prof. Kyoung-Soo Kim, CEO, Korea Infrastructure Safety & TechnologyCorporation
S3) Prof. Yin-Wen Chan, President, Taiwan Construction Research InstituteS4) Mr. Rahul Gupta, Superintending Engineer, Ministry of Road Transport& Highways
S5) Ms. Christine Andersen, Director of Public Works, The City of Santa
BarbaraCOMMENTATORS:
C1) Prof. Benito Pacheco, Vice Chancellor, The University of the Philippines
C2) Prof. Iswandi Imran, Professor, Bandung Institute of Technology

Points of Discussion:

3 Elements: ● Human-Resources and People （人）● Technology（技術開発）● Money （カネ）1) Roles of national/ local gov., private sectors, and otherinstitutions in various aspects2) Potential contribution of technologies
3) Appropriate contract and procurement systems
4) Enhancing citizens’ understanding and co-operation

Time Table:-14:40Presentations by the Five Resource Speakers(BREAK)

14:50-15:10
Comments by the Two Commentators
15:10-15:50
Overall Discussion together with the Floor