国総研ニューズレター
NILIM News Letter

No.48

Spring 2014

■ Changes of Organization of NILIM
Planning and Research Administration Department, Planning Division

Details * NILIM Web Site (Press Releases)
http://www.nilim.go.jp/lab/bcg/kisya/journal/kisya20140328_2.pdf
Deputy Director-General
Deputy Director-General
Executive Director for Research Affairs
Management Departments(3 department)

Maintenance Research Committee

Water Quality Control Department

River Department

Sabo Department

Road Traffic Department

Road Structures Department

Building Department

Housing Department

Urban Planning Department

Airport Department

Coastal, Marine and Disaster Prevention Department

Disaster Prevention andReduction Research Committee

Port and Harbor Department

Environment Research Committee

Research Center for Land and Construction Management

Research Departments (11 departments + 1 center)

General Affairs Department

Director-GeneralPlanning and Research Administration Department

In order to strengthen survey research and the field technology
support system concerning the maintenance of public capital(structures etc.), the Road Structures Department, ResearchCoordinator for River Structures, and the Port Construction Systemsand Management Division were newly established.

And to strengthen the research system related to disaster prevention
and disaster mitigation for large scale sediment disasters and floods,
which have been occurring with increasing frequency in recent years,
the NILIM also established the Sabo Department and the Research
Coordinator for Land Management and Disaster Prevention.
Furthermore, to conduct more efficient and more effective researchby departments in a shared field, the Research Center for Land andConstruction Management was newly established.

Administrative Coordination Department

On April 1, 2014, a reorganization of the NILIM was carriedout to strengthen its survey research and field technology support
system and to improve the efficiency and effectiveness of its
research concerning maintenance, disaster prevention and disastermitigation.

Figure: New Organization of the NILIM■ Seven New Project Researches Start in Fiscal Year 2014
Planning and Research Administration Department, Planning Division
The National Institute for Land and Infrastructure Management
started the following seven new project researches in Fiscal Year
2014.
Project Research, which means priority research that the NILIM
has independently selected by, for example, integrating researchwith common research and development goals, is conducted undera project leader based on an approximately 3 to 5 year plan by agroup of researchers from fields considered necessary to achieve
its goals.
[New Project Research Table]
1. Research on a method of improving the sustainability ofmaintenance incorporating the risk management perspective
2. Research on a method of evaluating safety of non-structuralmembers

3. Development of maintenance technologies and location evaluation
technologies for systematic restructuring of degenerated urban
districts
4. Research to improve airport pavement inspection and repair
technologies
5. Research on technologies to reduce earthquake damage to medium
and low storied buildings caused by large earthquakes
6. Research on the evaluation of parts of cities susceptible to damage
by urban fires etc. during earthquakes and of the effectiveness ofdisaster prevention countermeasures
7. Research on port and harbor technology and standards
globalization policies

Details * NILIM Web Site (Press Releases)
http://www.nilim.go.jp/lab/bcg/kisya/journal/kisya20140328_1.pdf

1■ Vice minister Hermanto (Indonesia) visited NILIM
Planning and Research Administration Department, International Research Division
A group led by Dr. Ir. Achmad Hermanto Dardak, Vice Ministerof Public Works of Indonesia paid a visit to NILIM under the Japan– Indonesia Research Cooperation Agreement concerning roadsand related fields.
On March 13, 2014, Dr. Ir. Achmad Hermanto Dardak, Vice
Minister of Public Works of Indonesia and Mr. Herry Vasa, Directorof Institute of Road Engineering (IRE) of the Ministry of Public
Works of Indonesia visited NILIM.
They visited Japan under the Japan-Indonesia Research Cooperation
Agreement signed by the Minister of Land, Infrastructure, Transport andTourism and the Minister of Public Works of Indonesia. They attended ajoint workshop (held at NILIM), the Seminar on Japan-Indonesia Civil
Engineering Technology (held by the Japan Society of Civil Engineerson March 12), and the Fifth Overseas Road PPP Consultative Meeting(held by the Ministry of Land, Infrastructure, Transport and Tourism on
March 14, attended only Director Herry Vasa).
The parties undertake technical cooperation in many fields. Past
examples include research conducted to introduce traffic volume
measurement method (IPT) using image processing technology tosurvey traffic in Indonesia and research on natural asphalt, asbuton,
which is produced in Indonesia.
At the joint workshop, the participants exchanged views concerning
Japanʼs Road Stations, and inspected an experiment using asbuton atthe PWRI.

Photos: Group photo (top), Director-general Sakai delivers
an address (lower left), Vice Minister Hermanto
listens carefully to the presentation (lower right)

Details * NILIM Web Site (Press Releases)
http://www.nilim.go.jp/lab/bcg/kisya/journal/kisya20140310.pdf■ Construction management methods of liquefaction countermeasures in sewage pipes
Water Quality Control Department, Wastewater System Division
To reliably earthquake-proof sewage pipes, an experimental studyof a backfill soil compaction method (liquefaction countermeasure)
was carried out and a new construction management method wasproposed in a guideline.
An experiment was performed by backfilling PVC pipes under avariety of conditions in order to propose a management method thatwill be applied to reliably execute liquefaction countermeasure work:
backfilling sewage pipes by compacting good quality soil (backfill soil
compaction method). The landfill soil compaction method is a work
method used by many regional public bodies, but because there arecases where construction management is difficult, it was necessary
to study a new construction management method. The experiment
was executed by first placing PVC pipes with diameter of 200mm in
a 2m deep, 6m long, and 1.5m wide excavated ditch assuming that
PVC pipes will be laid, then using three roller compactors (tamper,plate compactor) and tools (mallets) to backfill the pipes while varying
the roller compaction frequency, roller compaction time, spreading
thickness, and other conditions, and measuring the impact on the degreeof compaction of the soil and on the pipes, the execution time, etc.
As a result, considering the ease of on-site management, it has
been decided that selecting roller compaction machinery suited tosoil quality, and setting the spreading thickness and roller compaction
frequency most suitable for each machine are important factors in the2management of compaction. For this reason, a study was carried outof a construction management method performed by carrying out anadvance experiment in a simple ditch excavated at another location
to decide the spreading thickness and roller compaction frequency
suited to the machinery and tools (trial execution). Performing thebackfill experiment using the PVC pipe under conditions based on
the trial execution results showed that at all measurement points atfive locations installed in the depth direction, compaction equal to90% or more of the degree of compaction stipulated by the present
earthquake resistance countermeasure guideline for sewage pipes(Japan Sewage Works Association) was satisfied, confirming theeffectiveness of the construction management method: backfilland compaction of the backfill soil based on a trial execution. The
results of this experiment will be reflected in the revised Sewage Pipe
Earthquake Resistance Guideline.

Performing the experiment

Laying the PVC pipes

■ Investigation of Building Damage Caused by the Heavy Snowfall that Started on February 14th, 2014
Building Department, Standards and Accreditation System Division
The Department conducted an emergency investigation of thestate of damage such as the collapse of roofs of gymnasiums etc.
caused by record-breaking heavy snowfall in the Kanto-Koshin
Region on February 14 and 15 of this year.
On February 14 and 15, 2014, record-breaking heavy snow fellin parts of the Kanto-Koshin Region and Tohoku Region, resulting
in accumulated snow damaging buildings in Tokyo and Saitama
Prefecture, etc.
Therefore, on the 17th, 18th, and 21st of the same month, theBuilding Department carried out an emergency investigation of thestate of the damage jointly with the Building Guidance Division of theMLIT and the Building Research Institute and with the cooperationof the owners of the buildings in order to obtain reference information
for use in setting future building standards.
The buildings investigated were a Civic Gymnasium (Fujimi City,Saitama Prefecture), the laboratory of a research institute (Mitaka City,Tokyo), and a junior high school gymnasium (Ome City, Tokyo) In all
three buildings, accumulated snow caused the destruction or collapseof steel frame roofs. Two of the roofs were flat roofs made by installingshingles on a frame work made of truss beams, joists, and horizontal

braces (1/75 and 1/32weathering). One was aroof covered with steel
plates and with cement
excelsior boards as thesubstrate on top of a steel
frame (1/20 weathering).
At the March 10th
meeting (19th) of theCouncilfor
SocialInfrastructure, Building Photo: Collapsed roof of a gymnasium
Subcommittee, Division of Countermeasure Planning for Accidents
and Disasters of Buildings, a report was given on the damage
investigation and a Building Snow Damage Countermeasure Working
Group consisting of experts was formed under the Division. It is now
analyzing the causes of the building damage and studying the need torevise building standards.

Details * MLIT web site
http://www.mlit.go.jp/policy/shingikai/s204_setugaitaisaku01.html■ Study on internationalization of technical standards for port and harbour facilities of JapanPort and Harbour Department
The technical standards for port and harbour facilities inJapan represent the best of Japanese design technologies for portstructures. In order to reflect these technical standards in Vietnamʼs
national standards, we are advancing the research into the methods
for tailoring the national standards to Vietnamʼs needs.
The Japanese government intends to make it possible for Japanesecompanies to expand their businesses beneficially in foreigncountries, for example, the countries of Asia where lively demandfor infrastructure are expected to continue in the future. Therefore theJapanese government needs to promote efforts to have the countries
in which Japan makes investments adopt its standards in addition toconducting positive sales campaigns through cooperation between thepublic and private sectors. However, not all of the technical standards
used to design port and harbour structures in Japan directly conformto the actual circumstances of the countries in which Japan makesinvestments. That is caused by the differences in environmentalconditions, technological level, etc.
Therefore the Port and Harbour Department of NILIM is conducting
research into methods for tailoring the technical standards to theneeds of those countries through the following research activities:
carrying out investigations into the technology and standards
in developing countries such as the countries of Asia and others,
analyzing them; andconducting comparative analyses of the major technical standardsfor ports and harbours of Europe and America.
Vietnam and the Port and Harbour Department have built acooperative relationship in investigations and examination. On thebasis of the relationship, we are advancing the task of examining
methods of tailoring the technical standards to the needs of Vietnam.
The above work is also conducted in cooperation with the Ports andHarbours Bureau of the Ministry of Land, Infrastructure, Transportand Tourism (MLIT) and also with assistance provided by the Portand Airport Research Institute and others.

As a result of the past
examinations and thegood offices of the people
concerned, in Hanoi,
Vietnam on March 7, 2014,
MLIT and the Ministry ofTransport of the Social
Republic of Viet Nam
signed the “Memorandumon cooperation in development of the national Photo: Lecture by Mr. Yamamoto,
Deputy-Director General oftechnical standards for port
NILIM at the High Level Seminarand harbour facilities of
the Socialist Republic ofViet Nam”. In addition, the High Level Seminar on “Soft Infrastructure
for Development of Safe and Efficient Transport Network” washeld on the same day at the same place. As part of the seminar, Mr.
Yamamoto Hiroshi, Deputy-Director General of NILIM lectured on thecomprehensive technical standards for ports and harbours in Japan. His
lecture facilitated deeper understanding of the Vietnam side.
The research into methods for tailoring the technical standards tothe needs of various countries was approved as project research. In
response to the approval, we have strengthened the aforementioned
research from the beginning of the fiscal year 2014. On the basis of
the signed memorandum, Japan and Vietnam will work on the project
research expediting examinations. The Port and Harbour Department
will conduct the work in cooperation with the Ports and Harbours
Bureau of MLIT on the Japan side. On the other hand, Departmentof Science and Technology (DOST) of the Ministry of Transport, andthe Institute of Transport Science and Technology (ITST) will takethe lead in the research on the Vietnam side.

Details * NILIM web site (Technical Note of the NILIM)
http://www.nilim.go.jp/lab/bcg/siryou/tnn/tnn0769.htm

3

● Publication (research achievements) < February, 2014-April, 2014 >Download from here * http://www.nilim.go.jp/lab/bcg/siryou/index.htm

PROJECT RESEARCH REPORT of NILIM
No.
Title of Paper
43 Research on Advancement of Design, Construction and MaintenanceManagement Using 3D-Data
44 Research on greenhouse gas emissions and on collaboration between energy
suppliers and consumers in cities

Project Leaders
Research Center for Advanced
Information Technology
Director of the Water Quality Control
Department

RESEARCH REPORT of NILIM
No.
Title of Paper
Names of Divisions
53 Numerical estimation of inflow flux of floating natural macro-debris into Tokyo Bay Coastal Zone Systems Division

TECHNICAL NOTE of NILIM
No.
Title of Paper
749 Interim report on climate change adaptation studies
760 Method of emergency search for the location of landslide dams using highresolution single-polarization SAR image interpretation
766 Annual Report of Road-related Research in FY 2012

Names of Divisions
Climate Change Adaptation ResearchGroup
Erosion and Sediment Control DivisionRoad Department,Research Center for
Advanced Information Technology
Erosion and Sediment Control Division

767 Manual on data analysis for detection of landslide dam occurrence usingdischarge data
Port Planning Division
768 An Examination on Measures for Vessel Movements Monitoring along theNorthern Sea Route by the Utilization of Satellite AIS
769 A study on internationalization of technical standards for port and harbour
Port Facilities Division
facilities of Japan-Example study on eﬀorts to assist in developing port design standards in Vietnam770 Reconnaissance Report on Damage to Road Bridges and Snow-Shed by the 2011 Bridge and Structures Division
Nagano-Ken Hokubu Earthquake
771 Landscape and Ecology Division, Annual Research Report (28th)Landscape and Ecology Division
Construction Management Division
772 Report of Overseas Government Procurement -Public Procurement ofConstruction in United States, United Kingdom, France and Germany773 FY2012 Annual Report of Wastewater Management and Water Quality Control
Wastewater System Division, Wastewaterand Sludge Management Division
774 Report of the 1st Evaluation Committee of NILIM in FY 2013
Research Administration andEvaluation Division
775 Report of JTRC, NILIM and JARA Joint Seminar
International Research and Promotion
Division
776 Annual Report of Basic Data on Road Structures In FY 2012
Bridge and Structures Division
777 Research on Evaluation Technique of Applicable Condition for Weathering Steel Bridge and Structures Division
Bridge (I) Study about Evaluation Technique of Applicable Condition
778 Research on Evaluation Technique of Applicable Condition for Weathering Steel Bridge and Structures Division
Bridge (II) Study about Eﬀect of the Scattered Deicer on the Bridge
780 The Roadside Trees of Japan VIILandscape and Ecology Division
788 Research on landscape assessment and case studies for road noise barriersRoad Environment Division● We provide you with research information.
・2014 Annual Report of NILIM NEW
This web site introduces NILIM activities throughout the year, including research activities and achievements,
future initiatives, etc.
Go to this web site: * http://www.nilim.go.jp/english/annual/annual2014/ar2014e.html

National Institute for Land and Infrastructure Management
Ministry of Land, Infrastructure, Transport and Tourism
Asahi 1, Tsukuba, Ibaraki, 305-0804, Japan(Tachihara) Tachihara 1, Tsukuba, Ibaraki, 305-0802, Japan(Yokosuka) Nagase 3-1-1, Yokosuka, Kanagawa, 239-0826, Japan
Spring 2014
TEL:+81-29-864-2754 FAX:+81-29-864-4322
http://www.nilim.go.jp/english/eindex.htm
Edited and Published by National Institute for Land and Infrastructure Management

No.48

国 総 研 ニ ューズ レ ター

NILIM News Letter