国総研ニューズレター● Publication (research achievements) < March, 2016-May, 2016 >NILIM News Letter

Download from here * http://www.nilim.go.jp/lab/bcg/siryou/index.htm

TECHNICAL NOTE of NILIM
No.

Title of Paper

Structural Standards Division874

Key points for simulation methods for sediment dynamics due to sediment yield during
heavy rainfall

Sabo Planning Division

875

Report on Investigations into Disasters in Izu Oshima Island Caused by Typhoon Wipha in2013

Sabo Planning Division876

B-DASH Project No.7
Guideline for introducing a sewage pipe management system based on screening survey

Wastewater System Division

Development of efficient inspection camera and simple criteria for abnormality
877 classification of sewer pipe
~Joint research of a new efficient technique for the inspection of sewer pipe lines~■ Planning Manual for Creating a Plaza– A method for evaluating plaza spaces by planners offuture urban improvements –Urban Planning Department, Urban Facilities Division
We have created a draft plaza planning manual for use by people
planning to create a plaza as an attractive urban space, to help
improve our cities!

Wastewater System Division

Study on developing criteria for abnormality and urgency classification of polyvinyl chloride
878
Wastewater System Divisionpipes
Administrative Coordination
879 A Study of “Ocean-and-ship-Viewing Slopes”, a regional revitalizing resource of port towns
Department
A Basic Study of the Level 1 Reliability Design Method Based on Load and Resistance
Factor Approach~Performance verifications of sliding failure and overturning failure for caisson type quay
walls in permanent situation~

Port Facilities Division

881 Landscape and Ecology Division, Annual Research Report (30th)Landscape and Ecology
Division

Technical note on basin-wide water cycle analysis~ For combined analysis of surface water and groundwater ~Water Cycle Division

883

Landscape and Ecology
Division

885 Street tree restoration manual
904

Manual of Technical Standard for establishing Sabo master plan for debris flow anddriftwood

Sabo Planning Division

905

Manual of Technical Standard for designing Sabo facilities against debris flow anddriftwood

Sabo Planning Division

907 The Technical Report of Surveying Techniques of Raptors Using New Technology

Landscape and Ecology
DivisionTwo-stage comprehensive and specific contracting methods in the United Kingdom and908 the United States−Framework Agreement and Indefinite Delivery/Indefinite Quantity Contract−

The role of plazas in creating bustling urban centers and highlysustainable and productive cities has been reconsidered. Specifically,
there is a growing need for the following three aspects related toplazas:- Creation of bustling neighborhoods and formation of local
communities- Creation of opportunities to involve diverse participants anddevise sustainability mechanisms in urban spaces- Flexible methods of effectively utilizing existing stock
Therefore, it has become necessary to suggest ways of creating
higher quality plaza spaces. The NILIM has compiled a manualpresenting easy-to-understand concepts of plaza planning including
sample cases and data analysis.
Structure of the manual:[1] Creating plaza planning strategies (systematic classificationof plazas according to location conditions and characteristicsof the space)“Location characteristics”: [1] Location

Where do you suppose this plaza is located in the city?

Construction ManagementDivision(including planned site of the plaza)te reny c ic t
C i t d is t r
Center of abustling district● We provide you with research information.
・ 2016 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/annual2016/ar2016e.html

Central area

The central area of a bustling district
recognized as the heart of the city anda place that attracts many pedestrians.
For example, the space in front of a large
railway terminal station, the center of a
shopping district, or the space in front oflarge commercial buildings.

[1] Location

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 2016
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.56

NILIM News Letter

Multiple intersections[2] S tate ofconnections

One (passing through, adjoining)

Central area

National Institute for Land and Infrastructure Management
Ministry of Land, Infrastructure, Transport and Tourism[2] Maximizing the potential of a plaza (key points of spatiallayout based on data analysis)[3] Ascertaining the effects of creating a plaza (basic concept ofevaluating plazas)[4] Actually building the plaza (key points of planning,maintenance and operation)
This manual offers the following benefits for various participantsin the creation of a plaza.
Building a plaza in a good location and enhancing the quality ofthe plaza space will not only increase its attractiveness and usersʼ
satisfaction, but also create a lively atmosphere and have ripple effects
on the surrounding streets by, for example, becoming a starting point
for urban excursions. A plaza can also be operated autonomously,sustainably and productively to form communities.
We are continuing our studies and hope that many people will referto this manual to create many higher quality plazas.

Details * NILIM Website (Urban Facilities Division):
http://www.nilim.go.jp/lab/jcg/index.htm[1] Exposed layout
Of everybody
who passes
through theplaza, 19%
pass throughbetween theseating.

Number who pass through: 12

Number who pass through: 13

Periphery

Public space a little further from the centralarea, but which should be used effectively.
Places such as the space around a smallstation, end of a shopping street, spacearound a public building a little apart froma station, where the potential for strollingshould be increased.

Location characteristics

国 総 研 ニ ューズ レ ター

Spring 2016

Names of Divisions

868 Reconnaissance Report on Damaged Road Bridges in Hokkaido Prefecture

880

No.56

PeripheryLines ofmovement[2] Enclosed layout
Of everybody
who passes
through theplaza, 19%
pass throughbetween theseating.

Number who pass through: 7

Lines ofmovement

Figure: Images of the manual1

■ Verification test of recycling of treated wastewater to supply water suitable for low-cost

cultivation of vegetables■ PR activities to mitigate congestion – linked with NEXCO and JAF –Road Traffic Department, Intelligent Transport Systems (ITS) Division

Water Quality Control Department, Wastewater and Sludge Management Division
The NILIM is developing technologies to obtain recycledwater suitable for the cultivation of vegetables. A test to verify atreated wastewater recycling technology that combines membrane
filtration to efficiently remove fine particles with ultraviolet
radiation disinfection to effectively kill viruses has been in progresssince February 2016. The aim is to establish a treated wastewater
recycling technology that is cheaper and emits less CO2 thanexisting technologies.
Recycling treated wastewater through a supplementary process
is one way of increasing water resources in water-poor regions.
Performing treatment to recycle water is costly and consumes
energy, and there is a risk that the water will contain pathogenic

microorganisms such as intestinal tract viruses; accordingly,
sophisticated technology that guarantees the safety of water used tocultivate vegetables is essential.
The Ministry of Land, Infrastructure, Transport and Tourism iscarrying out the Breakthrough by Dynamic Approach in Sewage
High Technology Project (B-DASH Project) in order to promote
R&D and the commercialization of new sewage system related
technologies. It has commissioned the NILIM to conduct research on“Treated Wastewater Recycling Technology,” which is a technology
selected for FY2015.
This test will verify the effectiveness of treated water recycling
technology that combines membrane filtration with ultraviolet
radiation disinfection. The items verified are: [1] advanced virus
removal rate, [2] comparison of costs and carbondioxide emissions of technologies which satisfy [1](technology that combines adding chemicals, sandfiltration with disinfection), [3] safety of water quality,and [4] technology to detect membrane breakage
and decline of ultraviolet radiation intensity. The
research will be continued this year, with the aim of
the technology contributing to the establishment ofa recycling society by using the nutrients, nitrogenand phosphorus of the recycled water for agriculturalpurposes.

Details * NILIM website (B-DASH Project):Figure: Schematic diagram of the verification test

The ITS Division has been conducting public relations activities
to mitigate congestion during Golden Week holidays with NEXCO
East, Central, West and JAF.
The ITS Division has been conducting public relations activities
to mitigate congestion during Golden Week holidays with NEXCO
East, NEXCO Central, NEXCO West and JAF (Japan Automobile
Federation). “Expressway Cruising Manners Improvement Strategy!”(Reference map) has been published on the Divisionʼs website*1. Its
aim is to mitigate congestion during the Golden Week holidays byencouraging many drivers to observe the manners described.
Specifically, it recommends that at congestion-prone locations(mainly locations where drivers often slow down, such as gentle
slopes called sags; see the photo), drivers use the cruising lane (keepleft lanes) because congestion is triggered from the passing lane. In
addition, because different following distances are another cause ofcongestion, it calls on drivers to avoid following other cars too closely
or too distantly, and to refrain from changing lane frequently. With
the recent spread of automobile technology such as Adaptive Cruise
Control (ACC), drivers are urged to “comfortably use the cruisinglane” and “when in congestion, follow cars quickly by setting a shortfollowing distance (S mode).”It has been calculated that, by following these recommendations,if even one car out of 10 moves back to the cruising lane, time lost tocongestion will decline by about 18%. Your actions can help mitigate
congestion. Please try it!

http://www.nilim.go.jp/lab/ecg/english/b_dash.htm*Example of a congestion
location→The above sign warns of a asag section.

*1 Details * NILIM, ITS Division website:
http://www.nilim.go.jp/lab/qcg/index.htm*2 Details * JAF dedicated ACC website:
http://jaf-acc.jp/■ Remote monitoring of marine debris on the west coast of North America
Coastal, Marine and Disaster Prevention Department, Coastal Zone System Division
Marine debris including Tsunami debris on the west coast ofNorth America is being remotely monitored using webcams.
It is estimated that a total of 1.5 million tons of the Tsunami debris
by the Great Tohoku Earthquake has been floating in the North
Pacific (Ministry of Environment website). To investigate the impact
on the ecosystems of the North American coast by coastal Japanese
species that have adhered to the Tsunami debris, the Ministry of theEnvironment and the North Pacific Marine Science Organization(PICES) have been conducting an international cooperative project,
Assessing the Debris Related Impact From Tsunami (ADRIFT) for
three years since 2014.
The division has been using webcams to remotely monitor marine
debris including Tsunami debris washed ashore on the west coastof North America (coast of the State of Oregon) for about 1 year
as part of ADRIFT in cooperation with Kyushu University, Ehime
University, and Kagoshima University. The webcams, which wereinstalled in April 2015, have taken photographs of the shoreline at
one-hour intervals from 9:00 to 18:00 (local time: PST) for about 1year. The images obtained have been sent by internet to a server at
the Division.
Analysis of images obtained during the one year since the start of
remote monitoring has not confirmed any Tsunami debris. However,
the results of image processing to measure the quantity of marine2

debris have clarified that the quantity fluctuates with time, which is acharacteristic of the west coast of North America.
The project has provided useful data for forecasts and simulationof marine debris transportation. It will also provide indices forevaluating coastal environment contamination by marine debris.

Photo: Webcam installed on the west coast of North America

Details * ADRIFT website:

https://www.pices.int/projects/ADRIFT/main.aspx■ Reorganization of 2016 (Strengthening the I-Construction related survey research system)
Planning and Research Administration Department, Planning Division
The NILIM has established the Construction Management
Division to strengthen the survey and research system related
to I-Construction, which the Ministry of Land, Infrastructure,
Transport and Tourism is promoting. The Research Center forLand and Construction Management has been reorganized as theResearch Center for Land and Construction Management.
It is predicted that the future decline of the working-age populationin Japan will exacerbate the shortage of workers on construction
sites, so there is an urgent need to improve the productivity ofconstruction sites.
Information technologies and robotics are speeding up thetechnical revolution in mechanized construction work. For example,
computerized construction and unmanned construction are counted
on to dramatically improve productivity on construction sites.
Therefore, the NILIM has established the Construction
Management Division in the Disaster Prevention and Maintenance
Infrastructure Research Center to speed up the use of the latest
construction machinery and related technologies to build social
capital, and to strengthen the system for performing required
surveys and research.

Along with the new division, the names of other divisions
attached to the Disaster Prevention and Maintenance Infrastructure
Research Center have been changed and the center was reorganized
as the Research Center for Land and Construction Management.
This will create a survey and research system intended tostrengthen management at every stage from new constructionand improvement of public capital to its maintenance, renewal
and use, thus contributing to the progress of I-Construction(Construction Productivity Revolution), which the Ministry ofLand, Infrastructure, Transport and Tourism is promoting.
The NILIM has also established the Road Earthquake Disaster
Division to strengthen systems which conduct survey and researchnecessary to study how to ensure the functions of road networks
after a large earthquake and to give technical support to regional
public bodies.
The NILIM will continue to widely introduce the results of its
infrastructure research in order to contribute to society through its 11
research departments, one research center, and three administrative
departments.

Details * NILIM website:

http://www.nilim.go.jp/lab/bcg/kisya/journal/kisya20160401.pdf
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