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Nagai Hiroshi
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Research field 【 display / non-display 】
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Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Building structures and materials
Keywords for Research Field 【 display / non-display 】
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Soil structure interaction
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Piled raft foundation
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Exsisting old pile
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Screwed pile
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Seismic response
Graduate school・Graduate course, etc. 【 display / non-display 】
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Muroran Institute of Technology
2004，Doctoral program，Graduate School, Division of Engineering，Division of Civil Enginnering and Architecture，Completed，Japan
Graduate school・major, etc. 【 display / non-display 】
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Muroran Institute of Technology
1999，Faculty of Engineering，Department of Civil Enginnering and Architecture，Graduate，Japan
Degree 【 display / non-display 】
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Doctor of Engineering
水平力を受けるパイルド・ラフト基礎の大変形挙動と非線形解析法に関する研究
Academic Society 【 display / non-display 】
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Architectural Institute of Japan
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The Japanese Geotechnical Society
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International Society for Soil Mechanics and Geotechnical Engineering
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Japan Association for Earthquake Engineering
Academic prize 【 display / non-display 】
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2021 Outstanding Reviewer Award, Soils and Foundations
2022.06，Japanese Geotechnical Society
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令和元年度地盤工学会賞 論文賞（英文部門）
2020.06，地盤工学会
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平成26年度地盤工学会北海道支部賞
2015.04，地盤工学会北海道支部
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第40回地盤工学研究発表会優秀論文発表者賞
2005.07，地盤工学会
Books 【 display / non-display 】
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2018年北海道胆振東部地震災害調査報告
永井宏ほか，日本建築学会，2024.03，9784818920538
Papers 【 display / non-display 】
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Influence of backfilled sand dimensions and location on shaft resistance of piles
Kenta Nakamura, Hiroshi Nagai，International Journal of GEOMATE，vol.Vol. 25，(110)，(p.197 ～ 204)，2023.10
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DEFORMATION CHARACTERISTICS OF CONCRETE-FILLED DOUBLE STEEL PIPE PILE SUBJECTED TO HORIZONTAL LOAD AND ITS CALCULATION METHOD
永井 宏，池田篤則，Journal of Structural Engineering B，vol.Vol.69B，(p.326 ～ 335)，2023.04
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SHAFT RESISTANCE MECHANISM FOR PILES CLOSE TO BACKFILLED SAND AND ITS EVALUATION
Hiroshi Nagai，Kenta Nakamura，International Journal of GEOMATE，vol.Vol. 23，(98)，(p.84 ～ 91)，2022.10
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SHAFT RESISTANCE OF PILES CLOSE TO BACKFILLED SAND COLUMNS
Hiroshi Nagai，International Journal of GEOMATE，vol.Vol. 21，(84)，(p.121 ～ 128)，2021.08
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EVALUATION OF DYNAMIC INTERACTION FACTOR OF RECTANGULAR PILED RAFT FOUNDATION FOR HORIZONTAL AND ROTATIONAL MOTION
Hiroshi Nagai，International Journal of GEOMATE，vol.Vol. 20，(77)，(p.107 ～ 115)，2021.01
International conference proceedings 【 display / non-display 】
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Experimental study on lateral resistance of pile with backfilled soil -Effect of backfilled soil density-
Syunya Kudou, Hiroshi Nagai，Joint Seminar on Environmental Science and Disaster Mitigation Research 2020，(p.82 ～ 83)，2020.03
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Calculation Method on Vertical Deformation of Concrete-Filled Double Steel Pipe Pile
Keisuke Adachi, Hiroshi Nagai，Joint Seminar on Environmental Science and Disaster Mitigation Research 2019，(p.24 ～ 25)，2019.03
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Influence of ground motion level on Foundation Input Motion of Pile Foundation with Old Piles Left Underground
Kurumi Sato, Hiroshi Nagai，Joint Seminar on Environmental Science and Disaster Mitigation Research 2019，(p.78 ～ 79)，2019.03
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Analytical study on flexural performance of concrete-filled double steel pipe pile
Keisuke Adachi, Hiroshi Nagai，Joint Seminar on Environmental Science and Disaster Mitigation Research 2018，(p.75 ～ 76)，2018.03
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Shear Strain Distribution in Soil around Piled Raft Foundation under Severe Earthquake
Takanori Mimuro, Hiroshi Nagai，Joint Seminar on Environmental Science and Disaster Mitigation Research 2018，(p.143 ～ 144)，2018.03
Editorial and Commentary 【 display / non-display 】
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地盤工学会論文賞(英文部門)を受賞して
永井宏，土屋勉，島田正夫，地盤工学会誌，vol.Vol.68，(No.8)，2020.08
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第49回地盤工学研究発表会 総括 ６．地盤と構造物 杭基礎④
永井 宏，地盤工学会誌，vol.Vol.62，(No.11/12)，2014.12
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第48回地盤工学研究発表会 総括 ６．地盤と構造物 鉛直③
永井 宏，地盤工学会誌，vol.Vol.61，(No.11/12)，2013.12
Research reports 【 display / non-display 】
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A study on calculation for stresses in the ground due to shared loads of piles comprising piled raft foundations and its application to simplified calculation of consolidation settlement
宮内律郎，永井宏，高井友葵，日本建築学会北海道支部研究報告集，(No.96)，(p.363 ～ 366)，2023.06
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Influence of ground condition on dynamic horizontal impedance of piled raft foundation and its calculation method
安田優里菜，高井友葵，永井宏，日本建築学会北海道支部研究報告集，(No.96)，(p.13 ～ 116)，2023.06
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Effect of backfilled sand dimensions and location under different conditions on shaft resistance of newly constructed piles
中村健太，永井宏，森駿也，日本建築学会北海道支部研究報告集，(No.96)，(p.57 ～ 60)，2023.06
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Analytical study on the influence of backfilled soil column conditions on lateral resistance of new pile and its simple calculation
三島木駿，永井宏，日本建築学会北海道支部研究報告集，(No.95)，(p.53 ～ 56)，2022.06
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Study on long-term vertical bearing performance and consolidation settlement of piled raft foundation by in-situ loading tests
高井友葵，永井宏，宮内律郎，井出義人，大槻莉央，小路貴也，門脇在汰，金井重夫，日本建築学会北海道支部研究報告集，(No.95)，(p.23 ～ 28)，2022.06
Presentaion at conference, meeting, etc. 【 display / non-display 】
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Simplified calculation on horizontal dynamic impedance of piled raft foundation on multi layered soil
安田優里菜，高井友葵，永井宏，日本建築学会，日本建築学会大会学術講演梗概集，(p.635-636)，2023.09
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Comparison of horizontal behavior in embedded pilled raft foundations by different numerical analysis methods
岸俊甫，土佐内優介，山黒寛矢，永井宏，日本建築学会，日本建築学会大会学術講演梗概集，(p.639-640)，2023.09
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Effects of variation in soil parameters on resistance factor of piles
鈴木比呂子，安浩輝，鈴木康嗣，永井宏，日本建築学会，日本建築学会大会学術講演梗概集，(p.403-404)，2023.09
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Vertical bearing performance of piled raft foundations on soft clayey ground by in-situ loading tests Part 1: Summary and results of in-situ loading tests
高井友葵，永井宏，井出義人，金井重夫，日本建築学会，日本建築学会大会学術講演梗概集，(p.547-548)，2022.09
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Vertical bearing performance of piled raft foundations on soft clayey ground by in-situ loading tests Part 2: Discussion of in-situ loading test results
宮内律郎，永井宏，井出義人，金井重夫，日本建築学会，日本建築学会大会学術講演梗概集，(p.549-550)，2022.09
Class subject in charge 【 display / non-display 】
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建築学概論（前半８週）
2023，Department
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建築学演習Ⅰ（後半８週）
2023，Department
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建築学演習Ⅲ
2023，Department
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建築法規
2023，Department
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基礎構造
2023，Department