Research reports - Nagai Hiroshi
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Effect of multi-layer and shear wave velocity of soil on the horizontal dynamic impedance of piled raft foundations and simplified calculations
高井友葵,永井宏,安田優里菜,日本建築学会北海道支部研究報告集,(No.97),(p.445 ~ 448),2024.06
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Experimental study on shaft resistance of new piles overlapping in backfilled clayey soil columns - Effect of compressive strength of backfilled clayey columns on pile shaft resistance -
樫谷祥季,中村健太,永井宏,日本建築学会北海道支部研究報告集,(No.97),(p.149 ~ 152),2024.06
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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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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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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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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
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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 shaft resistance of new pile close to backfilled soil column after removing existing old pile - Examination of shear failure behavior by compressive loading test of pile in soil laid with colored sand -
中村健太,永井宏,日本建築学会北海道支部研究報告集,(No.95),(p.37 ~ 40),2022.06
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Study on settlement reduction and vertical load sharing of piled raft foundation in clay by in-situ loading test and simple calculation
宮内律郎,永井宏,井出義人,大槻莉央,小路貴也,金井重夫,日本建築学会北海道支部研究報告集,(No.94),(p.23 ~ 26),2021.06
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Analytical study on lateral soil spring of new pile close to backfilled soil column after removing existing old pile
工藤舜也,永井宏,日本建築学会北海道支部研究報告集,(No.94),(p.400 ~ 403),2021.06
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Calculation method for deformation of concrete-filled double steel pipe pile subjected to horizontal load
永井宏,池田篤則,佐藤雄太,山口湧也,日本建築学会北海道支部研究報告集,(No.94),(p.392 ~ 395),2021.06
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Study on shaft resistance of new pile close to backfilled soil column after removing existing old pile - Axial compressive loading model test of pile and finite element method -
黒川達矢,永井宏,工藤大暉,日本建築学会北海道支部研究報告集,(No.94),(p.43 ~ 46),2021.06
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Dynamic interaction factor between raft and pile group of piled raft foundation for horizontal and rotational motion - Frequency characteristics and simple evaluation of foundation with rectangular shape -
永井宏,日本建築学会北海道支部研究報告集,(93),(p.329 ~ 332),2020.06
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Analytical study on lateral resistance of pile with backfilled soil
工藤舜也,永井宏,地盤工学会北海道支部技術報告集,(No.60),(p.63 ~ 68),2020.01
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Calculation method on axial compression deformation of concrete-filled double steel pipe pile considering slip between steel pile and concrete
永井宏,足立啓輔,池田篤則,佐藤雄太,山口湧也,日本建築学会北海道支部研究報告集,(No.92),(p.371 ~ 374),2019.06
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Experimental study on lateral resistance of pile with backfilled soil
工藤舜也,永井宏,山黒寛矢,森田望,地盤工学会北海道支部技術報告集,(No.59),(p.51 ~ 56),2019.01
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An analytical study on effects of existing old pile condition for foundation input motion of new pile foundation considering nonlinearity of soil
佐藤来美,永井宏,日本建築学会北海道支部研究報告集,(No.91),(p.87 ~ 90),2018.06
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Analytical study on deformation characteristic and bending strength of concrete filled double steel pipe piles under axial force and bending moment
足立啓輔,永井宏,池田篤則,佐藤雄太,山口湧也,日本建築学会北海道支部研究報告集,(No.91),(p.115 ~ 118),2018.06
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Analytical Study on Compressive Behavior of Concrete-Filled Double Steel Pipe Pile
足立啓輔,永井宏,池田篤則,佐藤雄太,日本建築学会北海道支部研究報告集,(No.90),(p.53 ~ 56),2017.06
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Numerical Analysis of Effects of Configuration of Old Piles Left Underground on Foundation Input Motion of Pile Foundation
永井宏,室蘭工業大学紀要,(No.66),(p.83 ~ 94),2017.03
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Experimental study on pulling resistance of screwed pile - Effect of installation method on resistance and vertical stiffness of screwed pile -
峯知宏,永井宏,島田正夫,地盤工学会北海道支部技術報告集,(No.57),(p.223 ~ 230),2017.02
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An analytical study on foundation input motion of new pile foundation with old piles left underground - Study on configuration of old pile -
葛西勇紀,永井宏,土屋勉,日本建築学会北海道支部研究報告集,(No.89),(p.43 ~ 46),2016.06
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Seismic response of piled raft foundation by FEM analysis -Influence of ground motion level-
三室貴憲,永井宏,土屋勉,日本建築学会北海道支部研究報告集,(No.89),(p.91 ~ 94),2016.06
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Model Tests on Installation Method to Bearing Capacity of Screwed Piles
峯知宏,土屋勉,永井宏,島田正夫,帰山翼,梶谷陵一,藤原耕太,日本建築学会北海道支部研究報告集,(No.89),(p.55 ~ 58),2016.06
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A practical approach on behavior of rectangular piled raft foundation subject to vertical load
川淵基弘,土屋 勉,永井 宏,北原進之介,日本建築学会北海道支部研究報告集,(No.88),(p.113 ~ 116),2015.06
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A study on lateral resistance of screwed pile with soil improvement around pile head - Effects of soil improvement specification and site ground condition -
永井 宏,土屋 勉,池田篤則,佐藤雄太,古里光輝,日本建築学会北海道支部研究報告集,(No.88),(p.93 ~ 96),2015.06
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Model tests on pulling resistance of screwed pile-IV
岡 聖也,土屋 勉,永井 宏,島田正夫,中沢楓太,峯 知宏,佐藤 洋,東 智貴,日本建築学会北海道支部研究報告集,(No.88),(p.81 ~ 84),2015.06
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A practical approach on behavior of piled raft foundation subject to vertical load
北原進之介,土屋 勉,永井 宏,日本建築学会北海道支部研究報告集,(No.88),(p.73 ~ 76),2015.06
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Impedance of piled raft foundation and seismic response considering soil-structure interaction
村本恵一,永井 宏,土屋 勉,日本建築学会北海道支部研究報告集,(No.88),(p.65 ~ 68),2015.06
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Lateral resistance of screwed pile with soil improvement around pile head. - In-situ loading test and numerical analysis -
永井 宏,土屋 勉,池田篤則,佐藤雄太,地盤工学会北海道支部技術報告集,(No.55),(p.1 ~ 8),2015.01
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Analytical study on lateral resistance of screwed pile with soil improvement around pile head
葛西勇紀,永井 宏,土屋 勉,宇津見知樹,池田篤則,日本建築学会北海道支部研究報告集,(No.87),(p.53 ~ 56),2014.06
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A practical approach on behavior of piled raft foundations subject to vertical load.
北原進之介,土屋 勉,永井 宏,日本建築学会北海道支部研究報告集,(No.87),(p.151 ~ 156),2014.06
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Seismic response analysis of piled raft foundation considering soil-structure interaction - Influence of natural period of super-structure and subsurface structures -
阿部一茂,永井 宏,土屋 勉,日本建築学会北海道支部研究報告集,(No.87),(p.135 ~ 138),2014.06
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Model tests on pulling resistance of screwed pile-Ⅲ
岡 聖也,土屋 勉,永井 宏,島田正夫,中沢楓太,岩倉 栞,小塚将悟,千葉紘平,日本建築学会北海道支部研究報告集,(No.87),(p.111 ~ 114),2014.06
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PIV analysis for the behavior of soils around pile subjected to pullout load-Ⅱ
大江隆寛,土屋 勉,永井 宏,島田正夫,山根純平,佐藤貴博,日本建築学会北海道支部研究報告集,(No.87),(p.77 ~ 80),2014.06
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Study on soil stresses during pile installation and loading test of screwed pile.
島田正夫,土屋 勉,永井 宏,遠藤奨子,増田聖視郎,日本建築学会北海道支部研究報告集,(No.86),(p.193 ~ 196),2013.06
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Seismic response an alysis of piled raft foundation considering soil-structure interaction - Influence of subsurface structures
阿部一茂,永井 宏,土屋 勉,南 賢治,日本建築学会北海道支部研究報告集,(No.86),(p.53 ~ 56),2013.06
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A practical approach on behavior of piled raft foundations subject to vertical load. (Vertical stiffness and pile head load of piled raft foundation)
北原進之介,土屋 勉,永井 宏,日本建築学会北海道支部研究報告集,(No.86),(p.169 ~ 172),2013.06
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PIV analysis for the behavior of soils around pile subjected to vertical load.
福田 健,土屋 勉,永井 宏,島田正夫,大江隆寛,櫻井直樹,日本建築学会北海道支部研究報告集,(No.86),(p.149 ~ 152),2013.06
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PIV analysis for the behavior of soils around pile subjected to pullout load.
大江隆寛,土屋 勉,永井 宏,島田正夫,福田 健,梅田 光,日本建築学会北海道支部研究報告集,(No.86),(p.129 ~ 132),2013.06
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A practical approach on behavior of piled raft foundations subject to horizontal load. (Horizontal stiffness and pile head load of piled raft foundation)
兼平哲郎,土屋 勉,永井 宏,日本建築学会北海道支部研究報告集,(No.86),(p.77 ~ 80),2013.06
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Model tests on pulling resistance of screwed pile -II.
岡 聖也,土屋 勉,永井 宏,島田正夫,中沢楓太,米田大希,遠藤奨子,増田聖視郎,日本建築学会北海道支部研究報告集,(No.86),(p.73 ~ 76),2013.06
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An estimation method of interacting of raft/soil/pile for analysing the behavior of piled raft
渡辺和博,土屋 勉,永井 宏,日本建築学会北海道支部研究報告集,(No.85),(p.41 ~ 44),2012.07
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Study on vertical stiffness and pile head load of piled raft foundation
伊藤法子,土屋 勉,永井 宏,日本建築学会北海道支部研究報告集,(No.85),(p.157 ~ 160),2012.07
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PIV analysis for soils around pile subjected to vertical load (Part-2 Behavior of bored pile and jacked pile)
大江隆寛,土屋 勉,永井 宏,島田正夫,福田 健,日本建築学会北海道支部研究報告集,(No.85),(p.129 ~ 132),2012.07
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PIV analysis for soils around pile subjected to vertical load (Part-1 Introduction of PIV and its application)
福田 健,土屋 勉,永井 宏,島田正夫,大江隆寛,武田寛太,日本建築学会北海道支部研究報告集,(No.85),(p.125 ~ 128),2012.07
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An estimating method of horizontal stiffness and pile head load for piled raft foundation subjected to lateral load
兼平哲郎,土屋 勉,永井 宏,日本建築学会北海道支部研究報告集,(No.85),(p.77 ~ 80),2012.07
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Study on soil stresses of around screwed pile in a calibration chamber (part-2)
島田正夫,土屋 勉,永井 宏,日本建築学会北海道支部研究報告集,(No.85),(p.67 ~ 72),2012.07
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Seismic response analysis of piled raft foundations - Influence of natural period of super-structure -
阿部一茂,永井 宏,土屋 勉,渡辺和博,日本建築学会北海道支部研究報告集,(No.85),(p.63 ~ 66),2012.07
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Model tests on pulling resistance of screwed pile
大澤隆幸,土屋 勉,永井 宏,島田正夫,米田大希,菱沼 脩,五十川正樹,日本建築学会北海道支部研究報告集,(No.85),(p.45 ~ 50),2012.07
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Study on vertical bearing capacity of screwed pile based on load shearing of helix and pile tip
池田篤則,土屋 勉,永井 宏,日本建築学会北海道支部研究報告集,(No.84),(p.187 ~ 190),2011.07
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Seismic response analysis of piled raft foundations - Influence of superstructure and pile head condition -
永井 宏,土屋 勉,日本建築学会北海道支部研究報告集,(No.84),(p.97 ~ 102),2011.07
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An estimating method of pile head load for piled raft foundation subjected to lateral load
渡辺和博,土屋 勉,永井 宏,阿部一久,日本建築学会北海道支部研究報告集,(No.84),(p.161 ~ 164),2011.07
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Study on soil stresses during pile loading tests in a calibration chamber
大澤隆幸,土屋 勉,永井 宏,島田正夫,石田晴雅,日本建築学会北海道支部研究報告集,(No.84),(p.115 ~ 118),2011.07
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Study on soil stresses of around screwed pile in a calibration chamber
島田正夫,土屋 勉,永井 宏,石川隆太,永沼信洋,日本建築学会北海道支部研究報告集,(No.84),(p.111 ~ 114),2011.07
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AN ANALYTICAL STUDY ON NONLINEAR BEHAVIOR OF PILED RAFT FOUDATION SUBJECTED TO BUILDING INERTIAL FORCE BY THE EARTHQUAKE
永井 宏,舞鶴工業高等専門学校紀要,(第44号),(p.45 ~ 52),2009.03
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A Nonlinear Hybrid Analysis for Pile Groups due to Negative Skin Friction
土屋 勉,永井 宏,惣蔵潤一,高石麻友子,日本建築学会北海道支部研究報告集,(No.78),(p.103 ~ 106),2005.07
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Model Tests on Soil Stress and Shaft Friction near Pile Tip subjected to Vertical Load
永井 宏,土屋 勉,池田隼人,島田正夫,高久 穣,塚本健志,日本建築学会北海道支部研究報告集,(No.78),(p.93 ~ 98),2005.07
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Nonlinear behavior of piled raft foundation subjected to horizontal load (Part1: In-situ lateral loading tests)
関口 淳,永井 宏,土屋 勉,日本建築学会北海道支部研究報告集,(No.77),(p.161 ~ 164),2004.07
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Study on Shear Stress along Pile and Normal Stress in sand by Compressive Load Model Tests
池田隼人,土屋 勉,永井 宏,阿部 公洋,石黒 英和,日本建築学会北海道支部研究報告集,(No.77),(p.145 ~ 148),2004.07
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Nonlinear behavior of piled raft foundation subjected to horizontal load (Part2: Simulation of loading tests)
永井 宏,土屋 勉,日本建築学会北海道支部研究報告集,(No.77),(p.165 ~ 168),2004.07
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A study on shear stress along pile shaft in sand (Axial tensile load and axial compressive load tests)
永井 宏,土屋 勉,池田隼人,山本晶子,日本建築学会北海道支部研究報告集,(No.76),(p.69 ~ 72),2003.06
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A simple Elasro-Plastic Analysis for Piled Raft subjected to Vertical Load
土屋 勉,日光秀和,永井 宏,日本建築学会北海道支部研究報告集,(No.75),(p.39 ~ 42),2002.06
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Model Tests for Pile Behavior under Axial Loading Using Triaxial Chamber
永井 宏,土屋 勉,河﨑貴文,山田貴啓,日本建築学会北海道支部研究報告集,(No.75),(p.25 ~ 28),2002.06
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An elasto-plastic hybrid model for piled raft subjected to vertical load and its application
永井宏,土屋勉,日光秀和,開発技報,(45),(p.7 ~ 14),2002.06
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Model Test of Pile/Raft subjected to Vertical Laod
永井 宏,土屋 勉,島田正夫,関本賢太,中島みどり,山下真由,日本建築学会北海道支部研究報告集,(No.74),(p.355 ~ 356),2001.06
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An analytical study on behaviour of piled-raft due to vertical load
永井 宏,土屋 勉,宇野尚志,日本建築学会北海道支部研究報告集,(No.73),(p.75 ~ 78),2000.07
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An examination for model test of pile in a soil chamber : Preparation method of soils and measuring method of pile strain
島田正夫,土屋 勉,永井 宏,白石智明,米田智康,日本建築学会北海道支部研究報告集,(No.73),(p.79 ~ 82),2000.07
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An examination for vertical loading test of model pile in a soil chamber
北林大樹,土屋 勉,島田正夫,阿部拓哉,菖蒲 敬,永井 宏,日本建築学会北海道支部研究報告集,(No.72),(p.121 ~ 124),1999.03