December 2018 No.82
Japanese Infrastructure Newsletter

IDI

QUARTERLY
InfrastructureDevelopment

Institute—JAPANCONTENTS
20th Infrastructure Technology Development Award 2018
Enhancement of Efficiency and Effectiveness in Maintenance and Management System by utilizing ICT
Subtitle: Innovative Maintenance and Management System for Infrastructure “i-DREAMs”

Wire Rope Barrier Systems

Infrastructure Development Institute – Japan (IDI)
Plaza Edogawa-bashi 3F. 1-23-6, Sekiguchi, Bunkyo-ku, Tokyo, 112-0014, JAPAN
Tel: +81-3-5227-4107 Fax: +81-3-5227-4109 E-Mail: idi17@idi.or.jp Website: http://www.idi.or.jp/en/24

Infrastructure Development Institute - Japanth20 Infrastructure Technology Development Award 2018
Japan Institute of Country-ology and Engineering

The grand prize went to “Enhancement of(JICE) was established as a public interest

Efficiency and Effectiveness in Maintenance andcorporation to promote construction engineering

Management System by utilizing ICT”.

in Japan by conducting cutting-edge research andAnd the three excellence prizes were awarded todevelopment activities.

“Wire Rope Barrier Systems”, “Construction ofAs more incentives should be provided forlarge onshore wind turbine by lift up method”,

construction technology researchers and researchand “Caisson installation automation technology”.

institutes to enhance the level of construction

The grand prize and one of the three excellenceengineering more effectively, JICE commenced

prizes are introduced below.

Infrastructure Technology Development Awardwith Coastal Development Institute of Technology(CDIT) under the auspices of the Ministry of Land,

For any inquiries/ comments, please contact

Infrastructure, Transport and Tourism (MLIT).

JICE :

Thirty-four technologies competed for the 20th

Website: http://www.jice.or.jp/

Infrastructure Technology Development Award.

(Japanese version only)

In principle, the applicants’ technologies should

E-Mail: webmaster@jice.or.jp

have been developed within the past five years
and applied to the real sites already.
As a result of examination, institutes andresearchers with the following technologies wereawarded 20th prizes.

December 2018 No.82
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Infrastructure Development Institute - Japan

Enhancement of Efficiency and Effectiveness in Maintenance and Management System by utilizing ICT
Subtitle: Innovative Maintenance and Management System for Infrastructure “i-DREAMs”

1. Introduction
In Japan, aging infrastructure that wasdeteriorated.

2. Maintenance and Management System forInfrastructure
As shown in Fig.1, i-DREAMs is a system that

Therefore, the number of structural damages

can help implement an efficient maintenance anddetected from inspection work is increasing.

management work by linking and integrating all

However, there is a shortage of inspection andrelevant data and information obtained during themaintenance engineers due to a reduction ofwork processes of survey and design (DIM),

working-age population, which is one of major

construction (CIM) and maintenance (MIM).

developed during the high economic growth
periodhas

progressively

By integrating various data obtained from eachsocial issues.
Concerning the above-mentioned issues, thework process such as maintenance work and byhasutilizing 3D point cloud data for various stages ofdeveloped an innovative maintenance andmaintenance work on a Geographic Information

management(i-DREAMs:System (GIS) platform, the system can support anfor

efficient maintenance and management work of

Metropolitan

ExpresswayCo.,systemintelligence-DynamicRevolution

Ltd.

AssetManagement system) in order to enhance

infrastructure.

efficiency and effectiveness in maintenance andmanagement work for achieving sustainableinfrastructure.

SurveydesignDIM（Design Information Management）
Transfer data of survey and designCIM（Construction Information Management）
Transfer and integrate initial data

Construction record

Material data

MIM（Maintenance Information Management）
Evaluation and analysis of soundness,diagnosis and estimation of deterioration
FEM
analysis
Estimation ofdeterioration

GIS Platform
Mapinformation

Damage estimation by AI

Structural
data

Inspection
and repair➢ Completiondrawing➢ Ledgers➢ Inspection DB➢ Repair DB

3D-Point cloud data

Monitoring➢ To detect
deformation andcreate drawings➢ Monitoring DBof the structures

Evaluationof repair
DB server

Surrounding
information

Accident anddisaster prevention➢ Video image➢ Pictures➢ Hazard map➢ Accident DBｾﾝｻｰ®
InfraDoctor

IoT
by 3D-point
cloud databy eddy current
flaw detection test

by inspection
robotsby near-infrared
spectroscopy

by hammering
analysisby monitoringbridges with sensor

Automatic
extraction

Repair planning andimplementation

Figure 1 Overall concept of i-DREAMs
December 2018 No.82

by digital
image analysis

2Infrastructure Development Institute - Japan

3. Core Technology of i-DREAMs and its
Advantages
3.1 Site Condition Survey from the System
By using Mobile Mapping System (MMS) as
shown in Fig.2, 3D point cloud data andomnidirectional video image can be efficiently
measured while moving on highway without
requiring work zone traffic control such as roadclosure, thus making it possible to survey the site
condition on the GIS platform. The coordinates ofeach point cloud have an equivalent accuracy withthat obtained from a conventional on site
surveying. As shown in Fig. 3, it is possible toaccurately measure the dimension of an arbitrary
designated part such as road width. It is expected

3.3 Simulation in 3D Work SpaceAs shown in Fig. 5, a function that enables adynamic

simulationofany

construction

machine in the work space of 3D point clouddata by using the tool of 3D model ofconstruction machine prepared beforehand wasdeveloped. As a result, it is possible to confirm
in advance the selection of heavy construction /inspection machinery that is suitable for theactual site condition, the arrangement position,and

theinterference

withsurroundingstructures. Hence, it is possible to provide worksafety and to minimize any rework in the fieldwork.

that the required lead time can be reduced up to1/10 compared with that of a conventional method.

Figure 2 Mobile Mapping System (MMS)

Figure 5 Simulation of construction machinery(example of bridge inspection vehicle)

4. Conclusion
The measured 3D point cloud data by MMS
without any necessity of work zone traffic
Figure 3 3D Dimensional measurement (road width)

3.2 Creation of 2D and 3D CAD Drawing

controlcanbeefficientlyutilizedinmaintenance and management work. This canThe system is equipped with a function tosignificantly reduce the time required for work

automatically extract outline, planar or curved

zone traffic control, thus leading to a decrease

surface of structures from 3D point cloud data.

in social and economic losses due to such

By this method, 2D or 3D CAD drawings can be

traffic control.

easily created for structures without initial
as-built drawings or structures that haveindividual drawings but without integrated
drawings as a whole, as shown in Figs. 4.

Figure 4 3D Drawing creation
December 2018 No.82

Technology Developer: Metropolitan
Expressway Co., Ltd.／
Shutoko Engineering Co., Ltd.
Joint Developer: Highway Technology
Research Center, Aero Asahi Corporation,
Elysium Inc.
Contact: Dr. Eakarat or Mr. Kondo,
Metropolitan Expressway Co., Ltd.
E-Mail: tokyo@shutoko.jp
TEL: +81-3-3539-9442,
FAX: +81-3-3502-5675
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Infrastructure Development Institute - Japan
Wire Rope Barrier Systems

1. The Background and Turning Point of theTechnology Development
On non-divided two-lane expressways,

3. Range of Application of the Technology
This technology is installed as a median division
facility mainly for two-lane roads.

head-on-collisions have been a safety issue. The
feasibility of installing median strips, which
requires road widening, has been limited

4. Effectiveness of the Technology
When this facility is installed as a median facility

because of high costs. An example of guard

on a non-divided two-lane road, it prevents

fence installation along the division line of ahead-on-collisions and reduces the number ofnarrow road was seen in the case of a 2 + 1-lanecasualties in vehicles involved in accidents caused

road system adopted in Sweden. However, weby vehicles that drift into the opposite lane.

found that the Swedish system did not conform

Furthermore, the degree of injuries of theto the guard fence installation standards ofoccupants of the vehicles that collide with theJapan; therefore, we started developing a new

median facility is reduced because of the impact

type of wire rope barrier system.

absorbing characteristics of the wire rope. There
are two aspects to the cost reduction from installing

2. The Technological Features
The wire rope barrier system consists of highly

the wire rope barrier systems: one is the reduction

ductile wire ropes and relatively low-strength posts.

other types of guardrails, and the other is theThe barrier system resists the impact of vehicle

reduction in the cost for road widening due to thiscollision by mainly using the tension of the wirebarrier system requiring only 9cm for therope. The main feature of this barrier system isinstallation width. The turnbuckles installed withthat the impact of a colliding vehicle is absorbed byintervals of about 200m is able to be removed

the wire rope, and another feature is that thiswithout any machinery and the posts are able to bebarrier system can be installed along a narrow

removed when the tension of the wire rope iscenter strip of the road because the ropes arereleased. These two features enable the roadstretched through the vertically aligned holes ofadministrator to make an opening in the guardrail

thin posts. Installation and removal of this facility

anywhere desirable at the time of an accident oris easy; therefore, it is advantageous to apply thisother emergency. The time required for repairing

facility to narrow-width roads. To reduce thethis guardrail is short. Repair for the ordinary

installation width, the ends of the wire ropes aredamage caused by a vehicle collision only requiresaligned along the center line.

replacement of the damaged posts.

due to its lower construction cost than those for

Photo 1 Installed posts (left) and the end part (right)

Photo 2 Removal of posts andinstallation of opening
4December 2018 No.82

Infrastructure Development Institute - Japan

Fig. 1 The mechanism that works during avehicle collision
5. The Social Importance and TechnicalApplicability

Photo 3 Crash test (left: passenger car; right: large vehicle)
accidents decreased from 7 cases to zero, and theHead-on-collisions on a non-divided two-lane
expressway tend to be severe―they are often fatal.
Thesocialhead-on-collisions

importanceonof

non-divided

preventing
two-lane

expressways is high because vehicle occupants who
are not at-fault are involved in such accidents. In
2015, the Board of Audit of Japan recommended
the Ministry of Land, Infrastructure, Transportand Tourism (MLIT) and Nippon Expressway

number of injury accidents decreased from 6 cases
to zero. In June 2018, the MLIT announced thatthe ministry, based on this examination, would
start full-fledged installation of wire rope barriersystems on the temporary two-lane sections underconstruction or repair.

6. Installation Records➢ 2015: 17km on Obihiro-Hiroo Expressway➢2017:70.2km on Doto Expressway, Hokkaido

Companies to examine improving safety measures,

Expressway, Akita Expressway, Ban-Etsu

including the installation of median facilities inExpressway,order to solve problems of fatal accidents on theExpressway

temporary tow-lane sections of expressways. In➢

andNihonkai-Tohoku

2017: 4.4km on Tokai-Kanjo Expressway,

2016, the MLIT announced that the ministry

Maizuru-Wakasa Expressway, and Kisei

would start examination on the safety measures

Expressway

against head-on-collisions on two-lane expressways

➢

2017:

38.7kmby experimentally replacing the currently used

Hamadarubber-pole median facilities with wire rope barrier

Expressway,systems. In 2017, East, Central and West Nippon

Expressway

on

San-inExpressway,
andExpressway,
Matsuyama

Higashi-Kyushu

Expressway Companies experimentally installed
wire rope barrier systems on a total of about 113kmof road sections on 12 routes. As of May 2018, thenumber of accidents caused by vehicles that drifted

Contact:
Masayuki
HIRASAWA,
Civil
Engineering Research Institute for Cold Region
E-mail: hirasawa@ceri.go.jp
Phone: +81-11-841-1738

into the opposite lane decreased from 45 cases
before installation to one case. The number of fatal

Photo 4 Installation on atemporary two-lane
December expressway
2018 No.82

Photo 5 Example case that prevented a head-on-collision(Source: MLIT website)

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Infrastructure Development Institute - Japan

About IDI and IDI-quarterly
Infrastructure Development Institute (IDI)-Japan is a general incorporated
association operating under the guidance of Ministry of Land, Infrastructure,
Transport and Tourism of Japanese Government.
IDI provides consulting services for mobilizing International Assistance todeveloping countries, promoting international exchange of information and humanresources, and supporting globalization of project implementation systems targetingboth developed and developing countries in the field of infrastructure.
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technologies developed in Japan to foreign countries. We have distributed thejournal to administration officials in more than 90 countries around the world bye-mail.
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December 2018 No.82