国総研ニューズレター
NILIM News Letter

No.62Autumn 2017

■ Contributing to the recovery of the road bridges damaged by the 2016 Kumamoto

earthquake by the extensive knowledge of technology

Research Center for Infrastructure Management, Kumamoto Earthquake Recovery Division

The NILIM contributed to the early restoration of damaged road bridges
in Minami-Aso village due to the 2016 Kumamoto earthquake withcombining its technical knowledge.
At the NILIM immediately after the occurrence of the 2016 Kumamoto
earthquake, we have been providing technical assistance on restoration ofdamaged infrastructures. In April 2017, Kumamoto Earthquake Recovery
Division was newly established in Minami-Aso village where the restorationsites are located, and research staffs began residing there. By doing so, we canquickly establish a system for providing technical assistance timely, to promote
the rapid restoration in conjunction with the Kumamoto Reconstruction
Office, MLIT which is responsible for the project management.
In August 2017, the interrupted road route managed by Minami-Aso Village
was reopened by emergency restoration conducted by MLIT (see photo).
Upon this recovery project, the comprehensive knowledge of technology
through collaboration wiht Kumamoto Earthquake Recovery Division andother related division in the NILIM was utilized fruitfully.
In the bridge shown in the photo, the abutment supporting the endof the bridge girder was greatly subsided due to the collapse of the slope
accompanying the earthquake.
In the restoration of the abutment, we adopted the rigid frame-structure sothat the structure of the abutment as a whole is hard to submerge even if theslope collapse on the front side occurs again.
Furthermore, in order to make it less susceptible to the influence of the slope
collapse, and in order to make the linearity of the road more distant fromthe slope, and also to make it less susceptible to the influence of the slope
collapse, we set the linear line of the road away from the slope.
Thus, even if the same large earthquake occurs in the future, technicalconsideration is given so that the influence on the bridge is minimized.

Photo Road bridge in Minami-Aso village reopened in August 2017

Also, the RC pier suffered from significant cracks penetrating the hollow
section.
In the repair, a method of filling the hollow part with concrete was adopted,and in the technical advice, knowledge about the seismic damage mechanismof the hollow RC column accumulated in the NILIM was utilized.
Furthermore, paying attention to the fact that the way of shaking of thebridge changes before and after filling concrete, vibration measurement iscarried out using ICT technology (high-performance accelerometer), and therepair effect is also confirmed.
The NILIM will continue to strongly promote restoration and reconstruction
from the 2016 Kumamoto earthquake.

Details ☛ The website of Kumamoto Earthquake Recovery Division
http://www.nilim.go.jp/lab/pgg/index.htm■ Field Operation Tests (FOTs) of automated driving service based at road-side stations inrural depopulated areas has started nationwide.

Road Trafﬁc Department, Intelligent Transport Systems Division

At the two road-side stations in rural depopulated areas, we have started
the FOTs of automated driving service.
The Ministry of Land, Infrastructure, Transport and Tourism (MLIT)
aims to secure human flows and logistics for revitalization the region byutilizing automated vehicles in rural depopulated areas where rapidly-aging
population, and plans FOTs of automated driving service based at “Road-SideStation”.
This fiscal year, FOTs is going to be conducted at 13 places nationwide.
In each place, the Regional Development Bureau etc. will set up the regional
councils for FOTs including experts and local governments, and they aresupposed to do the formulation of the experimental plan and the operationof FOTs.
NILIM participates as a committee member of the regional councils
and take charge of technical support for the implementation of FOTs andverification.
For automated vehicles to be used in those FOTs, NILIM made a public
offering of experimental vehicle collaborators, and four collaborators werechosen after reviewing automated driving technologies, safety measures, andexperience of public roads in February 2017.
In this September, the first FOT was conducted at the road-side station"Nishikata" (Tochigi Prefecture). The automated vehicle of level 4 (thesystem conduct all operation tasks) was run at dedicated space. We conducteda social acceptability questionnaire survey about introduction of automateddriving service to the riding monitor of the surrounding residents and verified

Photo FOTs at the road-side station(Left: Nishikata Right: Ashikita Dekopon)

the road management level required for automated driving.
In addition, at the Road-Side Station "Ashikita Dekopon" (KumamotoPrefecture), we had conducted FOT in a mixed space with pedestrians andgeneral vehicles using the automated vehicle of the road-vehicle cooperation
type in October.
We are going to continue to conduct FOTs across the country, and plan to
examine how to utilize road space corresponding to automated driving andhow automated driving technologies should be based on the needs in ruraldepopulated areas.

Details ☛ Official website for automated driving service FOTs
http://www.mlit.go.jp/road/ITS/j-html/automated-driving-FOT/index.html

1

■ Development of tools to visualize the risk of falling outside walls of buildings on townscapescene

Housing Department, Housing Stock Management Division

NILIM has developed a set of tools named "Buildingsʼ External Risk
Visualizer" (BERV.dll) to visualize the risky area on townscape scene,through analysis of the data of dangerous outer walls inspected anddiagnosed.
For the prevention of falling accident of the outer wall which became aproblem in recent decades, the exterior wall diagnosis surveys are carriedout by the owners/managers of the buildings and reported following BuildingStandards Law. We developed these tools in order that the obtained data
should be effectively used to raise awareness of importance of maintenance/management and to contribute to safety of pedestrians.
The set of tools is used as a plug in to the "Landscape Simulation System”,
provided by MLIT (since 1996), both of which are freeware.
The operation outline is as follows.
Three dimensional model of walls of buildings and various structures
as component of the townscape are provided by utilizing point cloud datameasured with mobile provided with laser scanner (MMS), elaborated from
2 dimensional CAD drawings, or converted from 3 dimensional data such as
BIM

Figure1 Three-dimensional display of the range where
the danger of falling of the outer wall reaches

Texture image showing the distribution of exfoliation hazardous areas ineach exterior wall is provided from survey result for each wall.
Texture images are applied on the respective walls in the 3D model ofbuildings.
The 3D risky space or 2D risky area on ground as consequence from the fallof the outer wall can be displayed (Figure 1).
In the field, an Android based AR (augmented reality technology)
application (by NILIM, 2012) is used to superimpose the 3D risky spatial
range of danger of falling off of the outer wall on the real townscape scenetaken with the rear camera of the tablet terminal, therefore, you can checkwhile walking. (Figure 2)

Details ☛ Materials of press release

http://www.nilim.go.jp/lab/bcg/kisya/journal/kisya20170830.pdf

Details ☛ The website for downloading Landscape Simulation System
http://sim.nilim.go.jp/MCS/download.asp

Details ☛ Explanation of the “Buildingsʼ External Risk Visualizer”
http://sim.nilim.go.jp/BERV

Figure ２ Superimposing CG image of risk on the real scene of the site

■ Publish guidelines that explain the ease of deterioration and measures of wooden houses

Building Department, Structural Standards Division

We provided technical information to builders and residents to protect
our homes from rainwater infiltration and condensation.
According to Association of Housing Warranty Insures, more than 90%of the defects of houses responded by defect insurance are attributable towaterproof troubles, rainwater intrusion and dew condensation measures are
the extremely important task to ensure the durability of wooden houses.
In the NILIM, we have formulated and announced the following guidelines
showing selection methods and construction methods for specificationsof deterioration risk factors associated with rainwater infiltration, dew
condensation and specifications of the outer skin (roof/ceiling, an outer wall,under the floor, etc. and the structure of the outer peripheral portion covering
the living space).
Based on various tests such as degradation survey and raindrop verification
test accompanying rainwater intrusion and dew condensation, they had crossdisciplinary discussions between academics and practitioners, these guidelines
were organized by dividing the guidelines into "durable housing guidelines"
for living persons, "risk analysis/evaluation guidelines" for manufacturers,"design and construction guidelines".
According to these guidelines, the designer can grasp the type and risk ofrainwater infiltration from the outer skin, the risk of decay of the wood andconstruction of the wooden houses in advance, and can take countermeasuresaccording to the recommended specifications.
Residents can examine these countermeasures before constructing a home,2and it will be possible to improve the durability of houses and reduce the LCC(life cycle cost). And, they can be used as technical data at maintenance andrenovation of existing houses.
Currently, we strive to spread these guidelines.

Details ☛ NILIM website (Technical Note of NILIM No. 975)
http://www.nilim.go.jp/lab/bcg/siryou/tnn/tnn0975.htm

Photo Status of strong wind seepage test on outer wall and roof

■ "The 18th Tokyo Bay Symposium - Services of Coastal Region and Coastal Environment"

Coastal, Marine and Disaster Prevention Department, Marine Environment Division"The 18th Tokyo Bay Symposium" was held at Osanbashi YokohamaInternational Passenger Terminal on Friday, October 20, 2017.
The Tokyo Bay Symposium is held annually to bring together the latest
knowledge of research institutes, private companies and NPOs, to provide
information to a wide range of people, and to consider the better environment
and future of Tokyo Bay.
This year, we organized the main theme of reaffirming the wide range ofservices of the coastal area, and 282 people participated.
"Various ecosystem services and coastal environments in the coastal area" atPart 1, "Implementation of improvement of ecosystem services" at Part 2, and“the new viewpoint relevant to ecosystem service" at Part 3 as a sub-theme,
were announced by 9 lecturers.
A poster session was held between Part 1 and Part 2. Students, researchers,companies, administration, and NPO had the active exchange of opinions
about posters on Tokyo Bay revitalization, research, technology with

Photo The state of the lecture at the symposium■ 2018 fiscal year NILIM budget request

symposium participants.
Also on 21st, the Tokyo Bay Great Thanksgiving Day was held to get morepeople interested in the environment of Tokyo Bay at Yokohama Red Brick
Warehouse as the theme of "Let's start good and easy things for the ocean!"by the Public-Private Cooperation Forum for Tokyo Bay Restoration. Nearly
25,000 people including families visited us despite the rain.
Through the Tokyo Bay Symposium and the Tokyo Bay Great Thanksgiving
Day, many people enjoyed experiencing and discovering the charm andblessings of Tokyo Bay and we could provide the opportunity to act for theenvironment in Tokyo Bay. We will continue to strive to make many peopleinterested in the environment of Tokyo Bay in the future.

Details ☛ Marine Environment Laboratory Website

http://www.ysk.nilim.go.jp/kakubu/engan/kaiyou/kenkyu/tokyobay-sympo.
html

Photo The state of the Great Thanksgiving Day

Planning and Research Administration Department, Planning Division
Administrative Coordination Department, Planning and Coordination Division

In the NILIM, we are pursuing research on the infrastructurethat will make for the future of society and demand 18 issues (230million yen) including seven new issues in three new areas (100million yen).
○ Disaster prevention, disaster reduction, crisis management－ Study on Flood Damage Risk Reduction Measures Focused on FloodBlock
We will organize the disaster prevention measure examination method
to prevent human damage and regional devastating damage at the timeof flooding that can not be dealt with by the disaster prevention facility,and propose how to use the flood risk information that contributes to theconsensus formation of the region.
－ Development of a pre-analysis method for sediment-related disasters
caused by large-scale earthquakes
We will promptly estimate the occurrence situation of large-scale slope
failures, which is the main cause of the damage expansion at the timeof the large-scale earthquake, and conduct research to enable prompt
emergency response.
－ Study on an immediate damage estimation method of port and harbour
facilities at a large-scale earthquake
Establish an immediate estimation method of damage at port andharbour facilities (mooring facilities) so that we can quickly determine
an initial mechanism and a response policy for securing an emergency
supply transportation route when a large-scale earthquake occurs.
○ Maintenance of infrastructure－ Study on comprehensive management for sewer pipelineof sewer pipeline according to laying conditions and actual condition of
the area, and conduct research to achieve efficient maintenance and cost
optimization.
－ Development of evaluation technology for existing RC members that
contributes to renovation of long life of exterior and waterproof layer ofbuildings
In order to ensure the durability of the building by improving thequality of the exterior/waterproof layer, which is lower in durability than
the structural framework, we will develop the surveying technology ofthe building necessary for the development and refurbishment of theevaluation technology of the existing member which becomes the base to
be remodeled.
○ Productivity revolution (promotion of i-Construction, smart use,improvement of comfortable to live)－ Study on quantitative evaluation method of urban environment
improvement effect by green space, etc.
Toward the formation of a good urban environment throughconservation and creation of green, we will develop a method forquantitatively evaluating the multifaceted effects of urban green space,etc., focusing on green quality.
－ Development of visualization method of barrier-free effect according
to life stage
We will quantify the ease of activities (life, movement, assistance) in
the residence and conduct research to promote comprehensive barrier-freeconversion.

Details ☛ Press release materials to be announced on August 29, 2017
http://www.nilim.go.jp/lab/bcg/kisya/journal/kisya20170829.pdf

We will develop a selection method of checking survey technology

3■ Collaborative research with the Institute of Road Engineering of Indonesia The mid-term conference of IRE and NILIM Joint Research

Planning and Research Administration Department, International Research Division

In collaboration with the Institute of Road Engineering (IRE) of theRepublic of Indonesia, the NILIM conducted a mid-term conference ofIRE and NILIM Joint Research on October 4, 2017, and there were 5
presentations of research progress from 5 fields .
The NILIM concluded a memorandum of understanding with theInstitute of Road Engineering (IRE) of the Republic of Indonesia(concluded in 2009, updated in 2014). IRE and NILIM have conductedjoint research in multiple fields related to roads.
Total of 53 people, including six researchers from the IRE, participatedthe conference.
First, there were keynote speeches by Director - General of NILIM andproxy of IRE's director.
Subsequently, research progress was reported by researchers of five
fields: "Road-side station" "Traffic Data Collection" "Road Environment""Pavement" "Tunnel & Underground Structures".
Until now, the research has been conducted in each field individually,so this time it was a valuable opportunity for cross-sectoral sharing ofresearch situation and exchanging views.
In the Q & A session, information and opinions were actively exchanged
by both Japan and Indonesia participants, and the situation, differences

Photo The mid-term conference of IRE and NILIM Joint Research
participants

and challenges over infrastructure development in both countries wereclarified.
In the future, we will develop research contents and cooperation system
based on review of needs of both countries.

Details ☛ The detailed result of the conference will be uploaded on
NILIM Website soon.

● Schedule of Principal Events
Scheduled Dates
December 6Event Name
The Lecture Meeting of NILIM (2017)● Publication (research achievements) <August, 2017-October, 2017 >Download from here ☛ http://www.nilim.go.jp/lab/bcg/siryou/index.htm

TECHNICAL NOTE of NILIM
No.

Title of Paper

Names of Divisions

Report of the Evaluation Sub Committee of NILIM in FY 2016
976
Evaluation Committee of NILIM

Research Administration andEvaluation Division

978

Long Term Changes in Sediment Conditions and Eelgrass (Zostera marina) in Miyako Bay- Changes for 5 Years after the Great East Japan Earthquake -Marine Environment Division

979

New Equations for Calculating Design Seismic Coeﬃcients for Deeper Gravity-type and Sheet
Pile Quaywalls and Their Correction Based on Case Histories in JapanPort Facilities Division

982 Report of the Lecture Meeting of NILIM (2016)

Planning Division

984

Guideline for planning, design and management of disaster prevention parks (2nd revisedversion)

Landscape and Ecology
Division

986

Technical Note on Utilization of Natural and Regional Infrastructures in Regional Developmentfor Tsunami Disaster Prevention

Coast Division● We provide you with research information.
・2017 Annual Report of NILIM

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/annual2017/ar2017e.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, JapanAutumn 2017
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 ManagementNo.62

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NILIM News Letter