|
Affiliation |
Engineering educational research section Civil and Environmental Engineering Program |
|
Title |
Associate Professor |
|
Contact information |
|
|
Profile |
Dr. Fukubayashi is conducting the research on development of the method to utilize local soil material for geotechnical engineering purposes applying soil improvement and geotextile techniques. He has the experience working as project engineer/manager at a construction company and NGO in both Japan and developing countries. |
|
External Link |
|
|
Related SDGs |
|
FUKUBAYASHI Yoshinori
|
|
|
Degree 【 display / non-display 】
-
Doctor of Engineering ( 2017.11 Kyoto University )
Research Interests 【 display / non-display 】
-
Rural infrastructure development
-
Base course
-
Subgrade
-
Slope stability
-
earth retaining
-
Geotextile
Research Areas 【 display / non-display 】
-
Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Geotechnical engineering
Campus Career 【 display / non-display 】
-
University of Miyazaki Engineering educational research section Civil and Environmental Engineering Program Associate Professor
2025.04 - Now
-
University of Miyazaki Engineering educational research section Department of Engineering Department of Civil and Environmental Engineerring Program Associate Professor
2021.04 - 2025.03
-
University of Miyazaki Engineering educational research section Department of Civil and Environmental Engineering Associate Professor
2018.01 - 2021.03
Professional Memberships 【 display / non-display 】
-
森林利用学会
2021.8
-
Journal of International Development Studies
2005.4
-
Japan Society of Civil Engineering
1996.1
-
The Japanese Geotechnical Society
1996.1
Papers 【 display / non-display 】
-
神山 惇, 福林 良典, 末次 大輔
Acta Geotechnica 2025.12
Language：English Publishing type：Research paper (scientific journal) Publisher：Springer Science and Business Media LLC
In this study, experiments were conducted on physical models to simulate heavy rainfall in reservoirs. The primary aim was to clarify how the inclination of the embankment foundation terrain affects seepage behavior within the embankment during water storage and rainfall infiltration. Seepage behavior was measured under three conditions: water-level rise only, rainfall only and a combination of both. Embankments with inclined foundations exhibited water seepage times one-third shorter than those without inclination, particularly at the downstream toe. Conversely, the seepage lines were 30mm lower than those in embankments without inclination. This indicates that seepage flow converging toward the inclined foundation terminal intensified outflows toward the exterior, which potentially increases failure susceptibility. For inclined embankments, the hydraulic gradient at the downstream toe during failure was approximately 0.4. The findings demonstrate that conventional design guidelines are insufficient for evaluating reservoir stability, making a three-dimensional assessment that considers rainfall infiltration and foundation inclination essential.
-
WATER RETENTION AND SWELLING CHARACTERISTICS OF DIATOMACEOUS EARTH TREATED EXPANSIVE SOIL Reviewed
Tadesse A.B., Fukubayashi Y., Koyama A., Suetsugu D.
International Journal of Geomate 29 ( 133 ) 1 - 10 2025.9
Language：English Publishing type：Research paper (scientific journal) Publisher：International Journal of Geomate
Expansive soils pose significant challenges to highway embankments due to their high swell-shrink potential, which is exacerbated by desiccation cracking. While diatomaceous earth (DE) has shown promise in mitigating these issues, the underlying mechanism in expansive soils remains poorly understood. This study investigates the mechanism of diatomaceous earth (DE) addition in improving the behavior of expansive soils by examining soil-water retention and swell characteristics. The filter paper method was employed to assess soil water retention, while a one-dimensional swell compression test assessed swelling potential and swell pressure. Results indicate that adding 10%DESF in mass enhances water retention capacity and air entry suction, thereby improving the soil structure and reducing desiccation cracking. Furthermore, the swell potential and swell pressure of the expansive soil were significantly reduced, highlighting the effectiveness of DE treatment in mitigating soil expansion. These findings contribute to a better understanding of the role of DE in expansive soil stabilization. However, future research should focus on detailed microstructural analysis to explain the mechanisms at the particle level and field-scale validation to ensure practical applicability.
-
Taoka M., Fukubayashi Y., Watanabe H., Nishi Y.
Lecture Notes in Civil Engineering 447 127 - 135 2024
Publishing type：Research paper (international conference proceedings) Publisher：Lecture Notes in Civil Engineering
Temporally constructed steel sheet piles to retain the excavated ground wall at neighboring construction sites have been often left in the ground even after the backfill at the open-cut was completed. This is because the pull-out of steel sheet piles causes the non-negligible subsidence of the surrounding ground. In order to suppress ground deformation caused by the extraction, “A method of pulling out the earth retaining pile and filling filler at the same time” was developed and has been applied in more than 530 cases where the surrounding ground deformation was especially concerned. In this paper, a method of pulling out the earth retaining pile and filling filler at the same time is introduced, and its application is described. From the same case, the validity of the prediction of settlement of the surrounding ground during pull-out of steel sheet pile by the simple method is examined. As an initial step to develop three-dimensional elasto-plastic finite element method for evaluating ground deformation during the application of the simultaneous pull-out filling method, the mechanical properties of the filler are investigated taking curing period into account through uniaxial compression tests.
-
Koyama A., Akira Y., Mitabe H., Fukubayashi Y., Suetsugu D.
Case Studies in Construction Materials 18 2023.7
Language：English Publishing type：Research paper (scientific journal) Publisher：Case Studies in Construction Materials
The method of filling the lower space of a bridge with rigid polyurethane foam (RPU foam) to reduce the traffic load along with seismic reinforcement has rarely been applied to extend the life of bridges in Japan. This study evaluates the reinforcement effect and change in the vibration characteristics of a bridge converted into a lightweight embankment by RPU foam filling. A truck was driven on the bridge before and after the RPU foam filling. The vibration and strain of the slab were found to have reduced at the span center. When a traffic load was applied, the predominant frequency inside the RPU foam was ∼5 Hz, and long-period vibrations relative to the slab were confirmed.
-
Applicability of the Technical Transfer of Locally Available Material-based Methods of Road Repair by NGO for the International Development Projects Reviewed
FUKUBAYASHI Yoshinori, IWAMURA Yuka
Journal of International Development Studies 32 ( 1 ) 69 - 82 2023.6
Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Japan Society for International Development
Books 【 display / non-display 】
-
Koyama A., Suetsugu D., Fukubayashi Y.（ Role： Joint author）
Smart Geotechnics for Smart Societies 2023.1 （ ISBN:9781003299127 ）
Book type：Scholarly book
A method of filling the lower space of a bridge with rigid polyurethane foam (RPU foam) to reduce the traffic load along with seismic reinforcement is often applied to extend the life of bridges in Japan. The purpose of this study was to evaluate the reinforcement effect and change in the vibration characteristics of a bridge that was converted into a lightweight embankment using RPU foam filling. A truck was driven before and after filling an actual bridge with RPU foam and monitored the embankment behavior. RPU foam was observed to reduce the vibration and strain of the slab at the center of the span. The predominant frequency inside the RPU foam when a traffic load was applied was approximately 5 Hz, and long-period vibration was confirmed compared to the slab. Enclosed CPI_AR_PDF1.7.joboptions should be used to create the final camera ready copy PDF file. The publisher will reduce camera-ready copies by 75%. For the convenience of the authors, template files for MS Word 6.0 (and higher) are provided. R_PDF1.7.joboptions should be used to create the final camera ready copy PDF file. The publisher will reduce camera-ready copies by 75%. For the convenience of the authors, template files for MS Word 6.0 (and higher) are provided.
-
安福 規之 , 石藏 良平 , 大嶺 聖, 笠間 清伸 , 酒匂 一成 , 蒋 宇静 , 末次 大輔 , 杉本 知史 , 林 泰弘 ( 工学), 福林 良典 , 松原 仁 , 椋木 俊文 , 村上 哲 , 山本 健太郎 （ Role： Sole author）
理工図書 2022 （ ISBN:9784844609186 ）
Language：Japanese Book type：Scholarly book
-
これからのインフラ開発
福林 良典（ Role： Contributor）
弘文堂 2021.8
Total pages：209 Responsible for pages：30 Language：Japanese Book type：General book, introductory book for general audience
-
Fukubayashi Y., Kimura M.（ Role： Joint author）
Lecture Notes in Civil Engineering 2020
Book type：Scholarly book
Due to financial and technical constraints of the governments of developing countries, rural road networks generally offer poor access. At stream-crossing sections on rural roads, in particular, access may be cut off during the rainy season because of high water flooding the bridge. Considering the socio-economic situation and limited resources in rural areas, the authors proposed to build road-stream crossings through community initiatives by mobilizing local resources. Since then, several projects have been conducted. In order to assess the practicability of improving access at road-stream crossings and the performance of constructed structures, this paper presents case studies on projects in which low-water bridges and vented fords were constructed. Then, we discuss the performance of the structure and application criteria for construction, either by the community themselves or in collaboration with local government and community. It is demonstrated that road-stream crossing construction through community initiatives provides better access to roadside communities and enhances feelings of ownership, such that locals feel responsible for performing continuous maintenance and bridge safety.
-
科学研究費助成事業研究（平成29～令和元年度）地方創生に向けた住民参加型によるインフラ整備の有効性に関する検証 成果報告書
徳永 達己, 川崎 智也, 武田 晋一, 福林 良典（ Role： Joint author）
科学研究費助成事業 2020
Total pages：128 Language：Japanese Book type：Report
MISC 【 display / non-display 】
-
国際開発学2.0-新型コロナとニューノーマル
山田肖子、大塲麻代、汪 牧耘、曾田剛史、福林良典、佐藤 仁、高田潤一、島田 剛
国際開発学研究 30 ( 1 ) 75 - 89 2021
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal)
-
Project overview: Improving year-round accessibility by localizing technology
Shunsuke Matsukuma, Yoshinori Fukubayashi, Yasuo Sawamura
Zairaichi 2 7 - 11 2020.3
Language：English Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution) Publisher：The center for African Area Studies, Kyoto University
-
道普請は世界へ続く
福林良典
外交 2019.7
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (other)
-
アフリカの若者が主体になるSDGsに向けた取り組み Invited
福林良典
大原社会問題研究所雑誌 No.726 729 37 - 44 2019.4
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution) Publisher：法政大学大原社会問題研究所
-
Development of training program for bridge check engineers in Miyazaki
2019.1
Language：Japanese Publishing type：Research paper, summary (national, other academic conference)
Presentations 【 display / non-display 】
-
開発途上国での道普請活動からみる道路事情と適用可能な舗装技術
福林良典
令和7年度道路技術講習会
Event date： 2025.11.15
Language：Japanese Presentation type：Oral presentation (general)
-
「世界と人・技術をつなぐ架け橋としての日本の土木技術者―真の国際化に向けて今なすべきこと」
福林良典
令和7年度土木学会全国大会 特別講演会 国際センター企画
Event date： 2025.9.15
Language：Japanese Presentation type：Oral presentation (general)
-
簡易治山工の設置が崩積土斜面の浸透能に与える影響
福林良典・神山惇・末次大輔・山下達巳・前田浩伸
第60回地盤工学研究発表会 2025.7.23
Event date： 2025.7.22 - 2025.7.25
Language：Japanese Presentation type：Oral presentation (general)
-
アフリカでの道直し技術の開発と普及に向けた取組
福林良典
日本アフリカ学会第62回学術大会
Event date： 2025.5.17 - 2025.5.18
Language：Japanese Presentation type：Oral presentation (general)
-
簡易治山工の浸透能評価に向けた崩積土斜面での計測
福林良典・末次大輔・神山 惇・山下達己・前田浩伸
令和6年度土木学会年次学術講演会 2024.9.5
Event date： 2024.9.3 - 2024.9.5
Language：Japanese Presentation type：Oral presentation (general)
Industrial property rights 【 display / non-display 】
-
土層用空気圧送試験器および土層用空気圧送試験方法
福林 良典、前田 浩伸、山下 達己
Applicant：宮崎大学、株式会社シーテック
Application no：2024-162132 Date applied：2024.9.19
Announcement no：2025-48803 Date announced：2025.4.3
Country of applicant：Domestic
Awards 【 display / non-display 】
-
平成27年度土木学会論文賞
2016.6 土木学会 土のう工法の普及活動を通した未舗装道路のBOPビジネス化
福林良典、本庄由紀、木村 亮
Award type：Honored in official journal of a scientific society, scientific journal Country：Japan
-
平成19年度地盤工学会関西支部 社会貢献賞
2008.4 地盤工学会関西支部 「土のう」による住民参加型未舗装道路整備手法の開発と貧困削減へのアプローチ手法の確立
木村 亮、福林良典
Award type：Award from Japanese society, conference, symposium, etc. Country：Japan
-
平成18年度地盤工学会 国際会議若手優秀論文賞
2007.12 地盤工学会 Maintenance Method of the Rural Access Roads for Poverty Alleviation
Y. Fukubayashi, M. Kimura
Award type：Award from international society, conference, symposium, etc. Country：Japan
Grant-in-Aid for Scientific Research 【 display / non-display 】
-
簡易治山工による修復斜面の水文モデルと斜面安定解析手法の開発
Grant number：25K07925 2025.04 - 2028.03
独立行政法人日本学術振興会 科学研究費基金 基盤研究(C)
Authorship：Principal investigator
-
Establishment of prediction method of ground deformation when pulling out earth retaining piles
Grant number：20K04685 2020.04 - 2023.03
Grant-in-Aid for Scientific Research Grant-in-Aid for Scientific Research(C)
Authorship：Principal investigator
-
地方創生に向けた住民参加型によるインフラ整備の有効性に関する検証
Grant number：17K06606 2017.04 - 2020.03
科学研究費補助金 基盤研究(C)
Authorship：Coinvestigator(s)
国内の地方部において深刻化しつつある人口減少や過疎化に対し、住民参加型のインフラ整備の導入・普及を通じて、政府が重点施策として掲げている「地方創生」への貢献の可能性について、インパクト評価分析および新たに設定する評価指標を用いて検証する。
Social Activities 【 display / non-display 】
-
特定非営利活動法人道普請人理事
Role(s)： Advisor
2025.2.1 - 2026.1.31
-
宮崎地方裁判所令和6年度専門訴訟事件等の特殊事件のための研究会 土木工事に関する基礎知識
Role(s)： Informant
2024.12.25
-
宮崎県道路トンネル検討委員
Role(s)： Advisor
2024.10.1 - 2027.9.30
-
宮崎地方裁判所／専門委員（非常勤職員）
Role(s)： Advisor
2024.9.1 - 2026.8.31
-
宮崎県防災会議地震専門部会専門委員
Role(s)： Advisor
2024.9.1 - 2026.8.31
Media Coverage 【 display / non-display 】
-
山地補修技術をPR
中部経済新聞 2026.2.18
Author：Other
-
斜面災害防げ「コドボク」実証 Newspaper, magazine
電気新聞 電気新聞 2023.2.14
Author：Other
-
引抜き時の地盤変形をモデル化 Newspaper, magazine
橋梁新聞 2021.6.1
Author：Other
Academic Activities 【 display / non-display 】
-
一般財団法人防災研究協会／非常勤研究員
Role(s)： Planning/Implementing academic research, Peer review
2024.3.14 - 2026.3.31
Type：Academic research
-
宮崎県応用地質研究会