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Affiliation |
Engineering educational research section Department of Engineering Department of Civil and Environmental Engineerring Program |
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Contact information |
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HORISAWA Eitaro
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Degree 【 display / non-display 】
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博士（工学） ( 2024.3 京都大学 )
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修士（工学） ( 2021.3 京都大学 )
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学士（工学） ( 2019.3 長岡工業高等専門学校 )
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準学士（工学） ( 2017.3 長岡工業高等専門学校 )
Research Areas 【 display / non-display 】
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Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Structure engineering and earthquake engineering
Papers 【 display / non-display 】
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Kentaro Yasui, Yuri Sakaida, Kenshiro Yamamura, Makoto Minamimagari, Eitaro Horisawa, Chihiro Morita, Hiroyuki Kinoshita
Sustainability 16 ( 12 ) 4888 - 4888 2024.6
Publishing type：Research paper (scientific journal) Publisher：MDPI AG
Bora is a granular volcanic pumice with a certain degree of hardness. In this study, we investigated the possibility of using fired Bora as a substitute for fine sand in mortar. The objective was to develop a lightweight pavement block with extremely high permeability using fired Bora. Initially, the changes in hardness and density of Bora particles fired at different temperatures were examined. The bending strength of mortar containing fired Bora as a fine aggregate was also evaluated. Subsequently, we fabricated a permeable pavement block with a hybrid structure, comprising a mortar containing the fired Bora and a porous material with large-sized Bora particles bonded using cement paste. We examined its bending strength and permeability and performed a quantitative analysis of the bending stress distribution on the block using the finite element method. The hardness of Bora significantly increased when fired at temperatures exceeding 900 °C; hence, Bora fired at 1100 °C can be used as an effective substitute for crushed sand in mortar. Furthermore, the results confirmed that the use of fired Bora enabled the production of lightweight pavement blocks with extremely high permeability that satisfied the bending strength criterion.
DOI： 10.3390/su16124888
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STUDY ON STRAIN DEVELOPMENT OF STAINLESS STEEL UNDER CYCLIC TENSILE LOADING Reviewed
HORISAWA Eitaro, SUGIURA Kunitomo, KITANE Yasuo, GOI Yoshinao
Kou kouzou rombunshuu 31 ( 121 ) 121_17 - 121_26 2024.3
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Japanese Society of Steel Construction
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土木構造用ステンレス鋼の疲労特性の解明および材料構成則の高精度化に関する研究 Reviewed
堀澤英太郎
京都大学大学院工学研究科 博士学位論文 2024.3
Authorship：Lead author Language：Japanese Publishing type：Doctoral thesis
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Numerical study of stiffened plates joined by thermal spraying
Eitaro Horisawa, Kunitomo Sugiura, Yasuo Kitane, Yoshinao Goi
Proceedings of the 13th German-Japanese Bridge Symposium 2023.8
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
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Experimental study on constitutive law of stainless steel under multiaxial stress Reviewed
E. Horisawa, K. Sugiura, Y. Kitane, Y. Goi
Life-Cycle of Structures and Infrastructure Systems - Proceedings of the 8th International Symposium on Life-Cycle Civil Engineering, IALCCE 2023 4015 - 4022 2023.7
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
Stainless steel does not require painting and can contribute to the reduction of life cycle costs of structures. In general, material constitutive laws are essential to accurately evaluate the seismic behavior of structures in numerical analysis. In this study, the yield surface and flow rule of stainless steel were experimentally investigated to establish the multiaxial constitutive law. Axial forces and torques were applied to cylindrical specimens to represent various stress states. The yield surface of stainless steel in the plane of axial and shear stress were determined, and the evolution of plastic strain after yielding was observed. It was shown that austenitic grades exhibited isotropic yield surfaces, while duplex ones exhibited elliptical ones with an eccentricity of 0.7. It was also confirmed that the standard deviation of the direction of plastic strain propagation from the theoretical value is about 10 degrees, and the associated flow rule could be applied.
MISC 【 display / non-display 】
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IALCCE2023 参加報告
堀澤 英太郎
JSSC ( 54 ) 40 2023.7
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (other)
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Study on Fatigue Strength of Lean Duplex Stainless Steel Base Metal
Eitaro Horisawa
Steel Construction TODAY & TOMORROW ( 67 ) 6 2023.4
Language：English Publishing type：Article, review, commentary, editorial, etc. (other)
Presentations 【 display / non-display 】
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Numerical analysis on compressive behavior of stiffened plates joined by build-up thermal spraying
2023.9
Event date： 2023.9
Language：Japanese Presentation type：Oral presentation (general)
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Fatigue strength and inelastic behaviour of stainless steel
Eitaro Horisawa
13th Taiwan-Japan Workshop on Structural and Bridge Engineering 2023.3
Event date： 2023.3
Language：English Presentation type：Oral presentation (general)
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Fatigue Crack Growth Tests on Lean Duplex Stainless Steel Using Middle Tension Specimens
2022.10
Event date： 2022.10
Language：Japanese Presentation type：Oral presentation (general)
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SUS304およびリーン二相系ステンレス鋼の疲労強度に関する研究 Invited
堀澤英太郎
若手構造工学セミナー 2022.2 公益社団法人 土木学会
Event date： 2022.2
Language：Japanese Presentation type：Oral presentation (invited, special)
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リーン二相系ステンレス鋼SUS821L1突合せ溶接継手の疲労強度
堀澤英太郎, 杉浦邦征, 北根安雄, 五井良直
令和3年度土木学会全国大会第76回年次学術講演会 2021.9
Event date： 2021.9
Language：Japanese Presentation type：Oral presentation (general)
Awards 【 display / non-display 】
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Best Paper Award
2022.11 Japanese Society of Steel Construction
Award type：International academic award (Japan or overseas)
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優秀論文発表賞
2022.11 一般社団法人 日本鋼構造協会 ステンレス鋼の弾性域および降伏曲面に関する材料試験
堀澤英太郎, 杉浦邦征, 北根安雄, 五井良直
Award type：International academic award (Japan or overseas)
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Most Impressive Presentation賞
2021.9 公益社団法人 土木学会 SUS304およびリーン二相系ステンレス鋼の疲労強度に関する研究
堀澤英太郎,杉浦邦征,北根安雄,五井良直
Award type：International academic award (Japan or overseas)
Grant-in-Aid for Scientific Research 【 display / non-display 】
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肉盛溶射により小入熱で接合されたステンレス鋼補剛板の耐荷力に関する研究
Grant number：23KJ1213 2023.04 - 2025.03
日本学術振興会 科学研究費助成事業 特別研究員奨励費
堀澤 英太郎
Authorship：Principal investigator