2022. 9. 1

Japan Society of Civil Engineers
International Activities Center

IAC News No.119
Shibaura Institute of Technology’s InternationallyOriented Education and Education Policy During theCoronavirus Pandemic
Established in 1927 as an engineering college, the Shibaura Institute ofTechnology was initially composed of two departments: the Department of
Mechanical Engineering and the Department of Civil Engineering. Today, itapproaches its 100th anniversary. Having experienced many transformations over
the years, the Shibaura Institute of Technology continues to grow. In terms ofmaking the university more internationally-oriented, in 2014 we were the onlyengineering college in Japan to be selected for the SGU Project (Super GlobalUniversity Project), setting out on our journey to achieve our major goal of making
the university more internationally-oriented. However, starting with this project,

Prof. Takeshi Iyoda(Shibaura Institute ofTechnology)

we began efforts that were completely different from anything we had done before,such as supporting Japanese students to study abroad, accepting international students, hiring international
administrative staff, hiring administrative staff who can communicate in English, and setting up courses to beoffered in English. In particular, we have accepted short-term and long-term international students from Brazil,Africa, and Asian countries through programs such as Science Without Borders and the ABE Program. Inaddition, in 2020, we established the IGP (Innovative Global Program) within the Faculty of Engineering, aprogram that allows students to obtain a degree by studying solely in English. We are attracting new students
every year.
The Department of Civil Engineering is also involved in the IGP (recruiting international students in the fieldof civil engineering as well) and takes on many students in the aforementioned program. For example, mylaboratory has also accepted three short-term international students from Brazil, two from Asia, and one fromAfrica. Also, my laboratory has been steadily welcoming graduate students as long-term international students,
with two from Africa and two from Brazil. Furthermore, the Department of Civil Engineering as a whole has alarge number of international students participating in programs such as those of the Japan International
Cooperation Agency (JICA). Although such efforts were successfully helping to make the university moreinternationally-oriented, due to the impact of COVID-19, there was a dramatic drop in the number ofinternational students and students in general on campus. However, the programs have continued, and, byholding them online, our lectures have continued. Because of this, we decided to offer lectures to a large numberof students from all over the world by providing courses held in English. However, online students who had1

not traveled abroad would not turn on their camera when using Zoom, etc., and so it was a very difficult situationin which it was not possible to tell what kind of students were on the course. This school year, many students
have traveled abroad, reaching their respective universities, and many international students have returned as
before the pandemic. The number of international students on campus now was inconceivable in the midst of
the pandemic, and I sometimes see Japanese students in the corridors doing their best to communicate in English.
Fast forward and research presentations have also become more internationally-oriented. While there were notmany laboratories in the department that submitted papers to international conferences, this wave of increased
international activity has seen an increase in the number of submissions to international conferences. It is ashame, however, that these events are still held online due to the impact of the pandemic. In my laboratory,Japanese graduate students have submitted papers to many international conferences over the past few years,
but all of these events have been held online. While the sight of students giving presentations in hesitant English
in a corner of the laboratory wearing formal attire on just the upper half of their body was a real pity, at thesame time, I realized how convenient it is. As they could not understand what was being said in the Q&A, somestudents also made eye contact with me, seeking help. If it was a conference in person, this would rarely happen.
This world of online events is really interesting.
As I mentioned, efforts to make the university more international are progressing at an accelerated pace, and I
feel that the Department of Civil Engineering is also getting closer to reaching the levels of nearby universities.
The fact that we have more and more opportunities to speak English without having to study abroad isstimulating for both the students and myself and makes me very happy. I also find it extremely encouraging
given that exposure to different cultures is a source of growth for our students.

【Reported by Prof. Takeshi Iyoda, Department of Civil Engineering,
Faculty of Engineering, Shibaura Institute of Technology】

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ENEOS Corporation’s KS-1 Submarine Pipeline
Renovation Construction Project
1. Construction Outline
The Ukishima Seaberth (owned by ENEOS Corporation’s Kawasaki Refinery andhereinafter referred to as KS-1), which is the subject of this construction project,is an important facility responsible for providing a stable energy supply to the localcommunity. Due to the Kawasaki City Government’s waste landfill plan, however,it became necessary to move the facility from the front of the landfill site to theside of the existing offshore sea berth (hereinafter referred to as KS-2). In thesubmarine pipe construction work associated with the KS-1 relocation, this was a
project to renovate the existing pipes by developing and using a new construction

Masaaki Inoue(TAISEI CORPORATION)

method, the “Submarine Pipeline Renovation Method,” which utilizes the existingKS-2 pipes that had been out of use. This project won the Project Award at the 2021 Infrastructure MaintenanceAwards.
2. Construction Method Outline
As the conventional renovation method for submarine pipes requires extensive seabed excavation, it is presumed
that the conventional method will be difficult to adopt in the future in terms of sea area restrictions, social impact,
and conservation of the natural environment. In this project, new piping (inner diameter of 840 mm) was inserted
into the existing piping (inner diameter of 1,050 mm) to renovate the existing piping with minimal seafloor
excavation.
As this project involves curved alignment across a long stretch of roughly 2.3 km, it would be difficult to carryout the construction with the existing insertion method. Thus, a new construction method was developed. Theprinciple behind inserting a new pipe is to create a sealed structure by closing the ends of the new pipe. By
pressurizing the enclosed liquid from the rear end of the pipe through a plug, the pressure is transmitted to thetip of the new pipe to move it forward. This principle means that as a tensile force acts on the new pipe, the newpipe can be laid inside the existing pipe without damaging the pipe due to buckling.

Insertion Principle

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3. Construction Method
The land-side end of the existing piping was lifted from the seabed and supported on a temporary platform
equipped with an insertion device. A strand jack was fixed to the rear end of the existing pipe, and this was used
as a counter force to pressurize the plug.

State of Construction

The following two measures were also taken to facilitate the forward movement of the new pipe:(1) Sliding spacers were attached to the outside of the new piping to reduce frictional resistance.
(2) A liquid with a large specific gravity (heavy liquid) was poured into the existing pipe to adjust the weight of
the new pipe with the buoyancy of the liquid.
Thanks to these measures, the new piping could be inserted smoothly with a small insertion force, with theconstruction completed trouble-free in September 1996.
4. Conclusion
Submarine piping is widely used as a means of transporting fluids such as petroleum, but most of these pipelines
were constructed back in the 1960s and 1970s, with many of them suffering the effects of aging due to corrosion.
If a leakage accident occurs from these submarine pipes, there is a danger of it causing serious environmentalpollution. That is why the renovation of aging submarine pipes has become a major issue. I hope that thisconstruction method will help encourage further advancement, such as the effective use of existing pipes in theshift to alternative energy resources in the future.

【Reported by Masaaki Inoue, Chief Manager,
Marine Section, Construction Engineering Department,
Civil Engineering Division, TAISEI CORPORATION】

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Applied Mechanics Committee, JSCE

Applied Mechanics Committee started in September 1994 to improve the common
platform in the mechanical discipline in the civil engineering field, wherecollaborative research is encouraged among relevant fields, thus, contributing to
the development of theoretical (analytical) mechanics, experimental mechanics andcomputational mechanics. Since then, using “applied mechanics” as the keyword,
the Committee has created a community of researchers and engineers, in particularyoung members, from all sectors, who have been engaged in cutting-edge research
activities in civil engineering, with the main focus on pure research. In particular,
Symposium on Applied Mechanics, which has been held every year since 1998,
provides an opportunity to present the achievements of cutting-edge research in

Ryosuke Uzuoka,
Immediate-past Chair,
AppliedMechanics
Committee(Kyoto University)

applied mechanics. The research papers are reviewed and subsequently publishedannually in the Japanese Journal of JSCE Special Edition (Applied Mechanics). At present, around 120 oralpresentation applications and nearly 60 papers for review are received every year by five editorial departments(mathematical analysis for mechanics problem, computational mechanics, mechanics of materials and complex
phenomena, fluid mechanics and applied mathematics). Due to the spread of COVID‐19, the 23rd (May 2020)
and 24th (May 2021) symposiums were in a completely online format, and the 25th (May 2022) symposiums
was in a hybrid format. A total of 421 people participated in the 24th symposium, which was a great success dueto the ease of participation in the online format.

The 25th Symposium on Applied Mechanics(Kobayashi Lecture by Prof. Kenjiro Terada (Tohoku University) at Kagoshima University onMay 27, 2022)

5The ‟Applied Mechanics Forum” is held by the secretary of the 8 regional branches of the JSCE. Recently, thishas also been held online and has received more than 100 participants each time, making it a place for
information to be disseminated from the branch to the whole country. As research subcommittees,
Computational Mechanics x α, V & V in Numerical Analysis in the Civil Engineering Field, Data Driven
Reliability Design and Risk Assessment Implementation Research, Fluid Dynamics of Environment and Energyand Disaster Prevention are active. The Applied Mechanics Seminar and the JSCE Annual Meeting are also held
annually, and at these events, these research subcommittees sponsor and introduce front-line topics to members,
and actively promotes applying the latest achievements in practice and contributing them to education. Inaddition, as a new activity using the online format, we plan to hold a seminar series ‟Applied Mechanics
Frontier” in the online format, in which researchers who are conducting cutting-edge research in appliedmechanics and related fields will give lectures. For further information about what the Applied Mechanics
Committee does, please visit the Committee’s website.
*URL: https://appmech-jsce.com/【Reported by Ryosuke Uzuoka, Immediate-Past Chair, Applied Mechanics Committee (Kyoto University) 】

Updates◆JSCE-ASCE Infrastructure Resilience Research Grouphttps://www.infraresil.jp/◆2022 JSCE Annual Meeting International Program (Japanese)
https://committees.jsce. or.jp/kokusai/node/286◆JSCE Feedback Web Form「多門に多聞&多問」
https://committees.jsce.or.jp/chair/node/59◆The International Infrastructure Archives– A Compilation of Japan’s Greatest Projects in Transfer of Civil Engineering Technology in Service –http://www.jsce.or.jp/e/archive/6◆IAC “News Pick Up!!” on the JSCE Japanese website
https://committees.jsce.or.jp/kokusai/iac_dayori_2022◆Summary of featured articles in JSCE Magazine Vol. 107, No.9 September 2022
http://www.jsce-int.org/pub/magazine◆Journal of JSCE
https://www.jstage.jst.go.jp/browse/journalofjsce◆4th JSCE Concrete Committee Webinar "Frontiers of Concrete Technology"
https://www.jsce-int.org/node/774◆JSCE Online Joint Seminar“Advanced technologies and issues related to thermal effect of concrete in Singapore and Japan”
https://www.jsce-int.org/node/773◆The 9th Civil Engineering Conference in the Asian Region (CECAR9)
https://cecar9.com/◆The 1st International Conference on Food Waste to Food Sustainability 2022
https://www.polyu.edu.hk/pfs/index.php/392861?lang=en◆The 4th Asian Concrete Federation (ACF) Symposium on Emerging Technologies for Structural Longevity(ACF2022_ETSL): https://acf2022.aconf.org/index.html◆The 9th International Conference on Flood Management (ICFM9)
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