Zobrazeno 1 - 10 of 12 pro vyhledávání: '"Hisao Izuta"'
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EXPERIMENTAL STUDY OF YIELD PRESSURE ACTING ON A CIRCULAR FROZEN PLATE IN SALINE SOILS
Autor: Hisao Izuta, Chikaosa Tanimoto, Takahiro Ohrai
Publikováno v: Doboku Gakkai Ronbunshuu C. 65:673-683
塩分含有による凍土の曲げ降伏強度の低下が，シールド機発進や到達防護凍土壁をモデル化した円板型凍土にどの程度影響するかを調べるために，円板型塩分含有凍土の載荷実験を行っ
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7b73e73e6888a97f552d75bd2958c8ef
https://doi.org/10.2208/jscejc.65.673
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4
STUDY ON SUPPORTING METHOD TO EFFECTIVE EARTHQUAKE MEASURE FOR SMALL SCALE UNDERGROUND STRUCTURE ∼DEVELOPMENT OF SIMPLIFIED ARTIFICIAL-SOIL-FREEZING METHOD∼
Autor: Yasuhiko Konishi, Takahide Shono, Kazuo Takahashi, Hisao Izuta, Hiroaki Tani
Publikováno v: Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE)). 65:587-595
既設小規模地下構造物の老朽化対策や地震対策に伴い，地下水位以下を部分的に開口する必要が生じる場合，これまでは地盤改良により地盤の崩壊を防止して対応する場合が多かった．
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5903be4dce8ff27f95ef89908b03947c
https://doi.org/10.2208/jscejseee.65.587
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5
BENDING STRENGTH OF FROZEN SOIL BEAM WITH TEMPERATURE DISTRIBUTION AND CONSIDERATION OF AVERAGE TEMPERATURE EVALUATION METHOD
Autor: Yukihiro Kushida, Tetsuji Kato, Hisao Izuta
Publikováno v: Doboku Gakkai Ronbunshuu F. 63:97-106
現行の凍結工法では，適当な間隔で埋設した凍結管の中に冷却液を循環させて凍土壁を造成するので，凍土壁内には温度分布が存在する．このため，凍土壁内の変形係数や強度は場所ご
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b880502abc88d94a6069e1f3e444a9d7
https://doi.org/10.2208/jscejf.63.97
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6
Characteristics of Unfrozen Water Content in Frozen Soils and Its Effect on Flexural Strength
Autor: Hisao Izuta, Chikaosa Tanimoto, Takahiro Ohrai
Publikováno v: Journal of the Society of Materials Science, Japan. 56:74-81
Unfrozen water content (UWC), which affects the mechanical behavior of frozen soil, was investigated over a continuous temperature range using an isothermal adiabatic calorimeter. The employed soil materials were fine sand, clay and a mixture of fine
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bff05b48f529ab275aa7908485c3d2d9
https://doi.org/10.2472/jsms.56.74
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7
Experimental study on frost heaving of water-saturated soil under tri-axial stress
Autor: Hisao Izuta, Yasushi Ueda, Hideo Yamamoto
Publikováno v: Journal of the Japanese Society of Snow and Ice. 56:325-333
飽和土の凍結膨張特性に及ぼす各方向の応力の影響を調べる目的で,熱流方向の拘束応力σ1及び熱流と直角方向の拘束応力σ3を任意に与える開放型の凍上実験(三軸凍上実験)を行った.凍結
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::52a4f50cc64134e5cfca4d3986d96673
https://doi.org/10.5331/seppyo.56.325
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9
EXPERIMENTAL STUDY ON MECHANICAL PROPERTIES OF CIRCULAR SLABS OF FROZEN SOILS FOR STARTING OF SIELD
Autor: Hideo Yamamoto, Takahiro Ohrai, Hisao Izuta
Publikováno v: Doboku Gakkai Ronbunshu. 1992:47-54
シールド発進防護で用いる凍土壁の最適設計をするため, 砂や粘土からなる円板凍土の強度特性に関するたわみ試験を行った. 有穴モルタル円板と凍着した円板凍土を一定速度でたわませ
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a672667f3a992c879b9c8549403030cb
https://doi.org/10.2208/jscej.1992.454_47
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10
Deformation behavior and mechanical properties of frozen soil in bending test
Autor: Hisao Izuta, Hideo Yamamoto, Takahiro Ohrai
Publikováno v: Journal of the Japanese Society of Snow and Ice. 50:25-32
直方体粘土凍土・砂凍土の曲げ試験を行い, 曲げに対する力学的挙動の歪速度・温度・NaCl濃度依存性を調べた.凍土を一定速度でたわませる際の, 反抗力である荷重とたわみを連続測定し
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5a745904720a4eda9820b168314ffa2e
https://doi.org/10.5331/seppyo.50.25
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