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Affiliation |
Engineering educational research section Department of Civil and Environmental Engineerring Program |
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Professor |
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MORITA Chihiro
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Degree 【 display / non-display 】
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博士（工学） ( 1996.7 九州大学 )
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工学修士 ( 1990.3 長崎大学 )
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工学士 ( 1988.3 長崎大学 )
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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Yasui K., Sakaida Y., Yamamura K., Minamimagari M., Horisawa E., Morita C., Kinoshita H.
Sustainability (Switzerland) 16 ( 12 ) 2024.6
Publishing type：Research paper (scientific journal) Publisher：Sustainability (Switzerland)
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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Statistical damage constitutive model for rocks considering temperature effects and its validation Reviewed International coauthorship
Wei C., Zhao C., Zhao C., Matsuda H., Morita C.
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) 55 ( 3 ) 1056 - 1067 2024.3
Publishing type：Research paper (scientific journal) Publisher：Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology)
In order to predict and evaluate the stability of deep high-temperature rock masses, theoretical derivation methods were used to study the constitutive relationship of rocks under (after) temperature action. Firstly, based on existing rock statistical damage constitutive models, the influence of temperature on rock damage variables was considered, and parameters such as damage variable correction coefficient, damage initiation stress, and initiation strain were introduced. Secondly, it is assumed that the strength of the microelements follows a power function distribution and conforms to the Hoek- Brown (H-B) strength criterion. In response to the drawback that statistical damage constitutive models cannot reflect the strong prepeak microcrack compaction effect, corresponding model correction coefficients were introduced. Thirdly, a rock statistical damage constitutive model considering temperature effect was established, and the expression of model parameters was determined. Finally, the accuracy of the model was verified by comparing the data obtained from uniaxial and conventional triaxial compression tests on granite under different temperature conditions with the calculation results of the model in the literature. The results show that the calculation results of the proposed model are consistent with the experimental results in literature in terms of numerical values, distribution patterns and trends. For each stage of the whole process σ-ε curve, the calculation result of the model in this paper is better than that of the constitutive model in the literature, and fits with the test curve better, which can better reflect the damage constitutive characteristics of rock under (after) high temperature. The parameters of the model are conventional and suitable for rocks under various temperature-pressure combination conditions.
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宮崎県内の耐候性鋼橋梁におけるさび状態の経年変化
清瀬啓文，森田千尋，別府渓太，安井賢太郎
九州橋梁・構造工学研究会シンポジウム論文集 11 54 - 58 2023.12
Authorship：Corresponding author Language：Japanese Publishing type：Research paper (conference, symposium, etc.)
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Atmospheric corrosion properties of thermally sprayed Zn, Zn–Al, and Al-Mg coatings exposed under different atmospheric environment Reviewed
Y. Toyota, A. Nakano, C. Morita, K. Yasui, W. Oshikawa and N. Yonezawa
Proceedings of ISSS 2023 12 303 - 306 2023.11
Language：English Publishing type：Research paper (international conference proceedings)
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A Study on Bridge Inspection Method Using UAV and SfM Reviewed
J. Sakoda, C. Morita, K. Yasui and A. Demizu
Proceedings of ISSS 2023 12 299 - 302 2023.11
Authorship：Corresponding author Language：English Publishing type：Research paper (international conference proceedings)
Books 【 display / non-display 】
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これだけは知っておきたい橋梁メンテナンスのための構造工学入門
委員長：岩城一郎 他（ Role： Joint author）
建設図書 2019.5
Language：Japanese Book type：Textbook, survey, introduction
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耐候性鋼橋梁の可能性と新しい技術
主査：山口栄輝 他（ Role： Joint author）
日本鋼構造協会 テクニカルレポート 2006.10
Language：Japanese Book type：Scholarly book
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ロマンを訪ねて～九州橋紀行
九州橋梁・構造工学研究会 主査：﨑元達郎 他（ Role： Joint author）
西日本新聞社 1995.7
Language：Japanese Book type：General book, introductory book for general audience
MISC 【 display / non-display 】
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進化するRC構造物の非破壊検査2003 非破壊検査の手法【目で見る】3D Invited
森田千尋，出水享
建築技術 ( 881 ) 101 - 102 2023.6
Authorship：Lead author, Corresponding author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal)
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進化するRC構造物の非破壊検査2003 非破壊検査の手法【表面で計測する】光学的ひずみ計測 Invited
森田千尋，出水享
建築技術 ( 881 ) 122 - 123 2023.6
Authorship：Lead author, Corresponding author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal)
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デジタル画像相関法を用いた橋梁の亀裂・変位・ひずみ計測に関する研究 Invited
出水享，松田浩，伊藤幸広，森田千尋
光技術コンタクト 60 ( 2 ) 32 - 39 2022.2
Authorship：Last author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal)
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「橋の日」の制定・活動と47都道府県橋の日運動の支援 Invited
森田千尋
土木学会誌 ( 8月 ) 60 - 61 2021.8
Authorship：Lead author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (scientific journal)
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宮崎大学工学部で行った高校生「総合的な探究の時間」の評価
田村宏樹、森田千尋、盆子原康博、荒井昌和、菅本和寛、坂本眞人、石津貴弘
宮崎大学工学部紀要 49 17 - 22 2020.9
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution)
Presentations 【 display / non-display 】
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大気暴露試験を用いたAl，Zn系溶射皮膜の腐食特性評価
森本菖，森田千尋，中野敦，押川渡，豊田祐樹，米沢昇
令和5年度土木学会西部支部研究発表会
Event date： 2024.3.9
Language：Japanese Presentation type：Oral presentation (general)
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鹿児島県内における耐候性鋼橋梁の保護性さび発生状況の時間変化
甲斐頌盛，安井賢太郎，清瀬啓文，森田千尋
令和5年度土木学会西部支部研究発表会
Event date： 2024.3.9
Language：Japanese Presentation type：Oral presentation (general)
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宮崎県内の耐候性鋼橋梁における約20年間のさび状態変化
清瀬啓文，森田千尋，別府渓太，安井賢太郎
令和5年度土木学会西部支部研究発表会
Event date： 2024.3.9
Language：Japanese Presentation type：Oral presentation (general)
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実環境下における機能性防錆塗装システムの防食特性評価
緒方悠人，中野敦，森田千尋，博多屋智志
令和5年度土木学会西部支部研究発表会
Event date： 2024.3.9
Language：Japanese Presentation type：Oral presentation (general)
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動画を用いた3次元モデルの形状とひび割れ幅計測に関する検討
池内亮磨，森田千尋，安井賢太郎，出水享
令和5年度土木学会西部支部研究発表会
Event date： 2024.3.9
Language：Japanese Presentation type：Oral presentation (general)
Awards 【 display / non-display 】
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令和5年度土木学会西部支部研究発表会優秀講演賞
2024.3 公益社団法人土木学会西部支部
森本菖，森田千尋，中野敦，押川渡，豊田祐樹，米沢昇
Award type：Award from Japanese society, conference, symposium, etc. Country：Japan
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令和5年度土木学会西部支部研究発表会優秀講演賞
2024.3 公益社団法人土木学会西部支部
清瀬啓文，森田千尋，別府渓太，安井賢太郎
Award type：Award from Japanese society, conference, symposium, etc. Country：Japan
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令和4年度土木学会西部支部研究発表会優秀講演賞
2023.3 公益社団法人土木学会西部支部
豊田祐樹，汐川晶，中野敦，森田千尋，博多屋智志
Award type：Award from Japanese society, conference, symposium, etc. Country：Japan
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第29回鋼構造年次論文（報告）発表会優秀発表賞
2021.11 一般社団法人日本鋼構造協会
中野敦，白井敬大，森田千尋，押川渡，米沢昇
Award type：Award from Japanese society, conference, symposium, etc. Country：Japan
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第８回九州橋梁・構造工学研究会シンポジウム優秀発表賞
2020.12 一般社団法人九州橋梁・構造工学研究会
白井敬大、中野敦、森田千尋、押川渡、米沢昇
Award type：Award from Japanese society, conference, symposium, etc. Country：Japan
Grant-in-Aid for Scientific Research 【 display / non-display 】
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3次元データを用いたインフラ構造物の点検・診断システムの高度化・高精度化
Grant number：22K0426801 2022.04 - 2025.03
独立行政法人日本学術振興会 科学研究費補助金 基盤研究(C)
Authorship：Coinvestigator(s)
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地方橋梁の三次元モデルの構築と効率的・効果的な復元設計による維持管理環境の創出
Grant number：20K04666 2020.04 - 2023.03
独立行政法人日本学術振興会 科学研究費補助金 基盤研究(C)
Authorship：Principal investigator
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橋梁狭隘箇所の変状認識を目的とするGNSSを採用したUAV自律航行システムの開発
2020.04 - 2021.03
科学研究費補助金 基盤研究(C)
Authorship：Coinvestigator(s)
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３次元データを用いたインフラ構造物の革新的点検・診断システムの開発
Grant number：19K04556 2019.04 - 2021.03
科学研究費補助金 基盤研究(C)
Authorship：Coinvestigator(s)
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光学的計測法を用いた仮設足場を用いない効率的・低コストな橋梁健全度診断手法の開発
2017.04 - 2020.03
科学研究費補助金 基盤研究(B)
Authorship：Coinvestigator(s)
Available Technology 【 display / non-display 】
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多視点画像解析を用いた構造物の3次元モデル化と橋梁点検への活用
防食技術（溶射、機能性防錆塗装システム）の腐食性評価に関する研究
耐候性鋼橋梁の健全度評価手法に関する研究Home Page： 土木環境工学プログラム
Related fields where technical consultation is available：・橋梁（特に鋼橋梁）の点検、診断、補修・補強に関する内容
・構造物の構造解析、実験Message：構造物（特に鋼橋梁）の維持管理に関する研究を行っています。これらに関するご相談に対応できると思います。
また、学び直し講座として、橋梁点検技術者養成講座を実施しています。