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Doboku Gakkai Ronbunshuu C最新文献

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ESTIMATION OF GROUNDWATER MOVEMENT FOCUSED ON FRACTURES AND VEGETATIONS AROUND THE MOGAO GROTTOES 以莫高窟周围断裂和植被为重点的地下水运动估算
Doboku Gakkai Ronbunshuu C Pub Date : 1900-01-01 DOI: 10.2208/JSCEJC.66.836
K. Koizumi, Chunze Piao, C. Tanimoto, Y. Ueno, S. Iwata, Li Zuixiong, Xu-dong Wang, Q. Guo
{"title":"ESTIMATION OF GROUNDWATER MOVEMENT FOCUSED ON FRACTURES AND VEGETATIONS AROUND THE MOGAO GROTTOES","authors":"K. Koizumi, Chunze Piao, C. Tanimoto, Y. Ueno, S. Iwata, Li Zuixiong, Xu-dong Wang, Q. Guo","doi":"10.2208/JSCEJC.66.836","DOIUrl":"https://doi.org/10.2208/JSCEJC.66.836","url":null,"abstract":"乾燥地域の洞窟壁画を塩害から守るためには，水分の分布状況を明らかにする必要がある．本研究では，リモートセンシングにより，敦煌莫高窟へ辿りつく水分の移動経路を推定することを目的とした．複数の衛星データと現地踏査により，周辺の割れ目および植生分布を把握した．この結果，割れ目は広域から狭域で同様の走向を示しており，莫高窟に分布する割れ目の走向が広域の断層に支配されていることが明らかとなった．また，植生が河川沿いのみならず，砂丘や基盤岩上にも分布していることが確認された．そのうち，三危山に分布する植生は直線状に分布し，それらの走向が断層と一致していることが確認された．このことから，三危山と同様の地質構造をもち，莫高窟崖面と接する鳴沙山においても，割れ目に沿って水分が移動している可能性が考えられる．","PeriodicalId":131805,"journal":{"name":"Doboku Gakkai Ronbunshuu C","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128133974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
DISCUSSION ON THE LIME SOIL STABILIZATION OF ACID SULFATE SOIL 酸性硫酸盐土石灰土稳定的探讨
Doboku Gakkai Ronbunshuu C Pub Date : 1900-01-01 DOI: 10.2208/JSCEJC.65.425
H. Shigematsu, Yusuke Nishiki, M. Nishizawa, Hironobu Ikemura
{"title":"DISCUSSION ON THE LIME SOIL STABILIZATION OF ACID SULFATE SOIL","authors":"H. Shigematsu, Yusuke Nishiki, M. Nishizawa, Hironobu Ikemura","doi":"10.2208/JSCEJC.65.425","DOIUrl":"https://doi.org/10.2208/JSCEJC.65.425","url":null,"abstract":"石膏析出後の酸性硫酸塩土と，土質試験の一斉試験などでしばしば用いられる深草土の両者に対して，消石灰を異なる混合率で混ぜ合わせ，pH試験と一軸圧縮試験を各養生日数で実施した．これらの実験結果から，両安定処理土のpHおよび強度特性（特に強度発現速度）を比較し，その差異を明らかにした上で，石灰混合による酸性硫酸塩土の安定処理効果について詳細に検討した．また，実験に用いた供試体を走査型電子顕微鏡（SEM）で可視化し，土と石灰・石膏の水和反応によって形成されたエトリンガイトと土の強度特性が密接に関係していることを理解した．","PeriodicalId":131805,"journal":{"name":"Doboku Gakkai Ronbunshuu C","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125446826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
VERIFICATION OF MULTI-SCALE ANALYSIS FOR PARTIALLY IMPROVED GROUNDS BY CENTRIFUGAL EXPERIMENTS AND ITS APPLICATION TO IN-SITU LOAD-SETTLEMENT PROBLEM 部分改良地基的离心多尺度分析验证及其在原位荷载沉降问题中的应用
Doboku Gakkai Ronbunshuu C Pub Date : 1900-01-01 DOI: 10.2208/JSCEJC.66.332
A. Ishikawa, K. Terada, T. Kyoya, Y. Shamoto
{"title":"VERIFICATION OF MULTI-SCALE ANALYSIS FOR PARTIALLY IMPROVED GROUNDS BY CENTRIFUGAL EXPERIMENTS AND ITS APPLICATION TO IN-SITU LOAD-SETTLEMENT PROBLEM","authors":"A. Ishikawa, K. Terada, T. Kyoya, Y. Shamoto","doi":"10.2208/JSCEJC.66.332","DOIUrl":"https://doi.org/10.2208/JSCEJC.66.332","url":null,"abstract":"筆者らは複合地盤の変形挙動を解析するための主応力・主ひずみで記述した3次元非線形弾性構成則とこれを材料モデルとして組入れた非線形マルチスケール解析法を提案している．本論文では，提案手法の実験的検証と原位置問題への適用について示す．まず，遠心場において静的載荷実験を行い，砂地盤では荷重面に均一に沈下するのに対して，改良体で改良された複合地盤では中心部の沈下量が大きく，異なる沈下分布となることを示す．次に，上記の沈下分布を，提案する解析法により定量的に評価できることを示す．最後に，敷地の一部に杭が多数打設された原位置複合地盤に対してマルチスケール解析を適用した結果，全体的な沈下分布を再現できることを示す．","PeriodicalId":131805,"journal":{"name":"Doboku Gakkai Ronbunshuu C","volume":"438 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127951700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
すべり・落下・転倒を対象としたきれつ性岩盤斜面の簡易安定性評価手法 以滑动、坠落、跌倒为对象的碎裂性岩盘斜面的简易稳定性评价方法
Doboku Gakkai Ronbunshuu C Pub Date : 1900-01-01 DOI: 10.2208/JSCEJC.63.188
武富 鷲見, 厚 八嶋, 和秀 沢田, 周二 森口, 正樹 小嶋
{"title":"すべり・落下・転倒を対象としたきれつ性岩盤斜面の簡易安定性評価手法","authors":"武富 鷲見, 厚 八嶋, 和秀 沢田, 周二 森口, 正樹 小嶋","doi":"10.2208/JSCEJC.63.188","DOIUrl":"https://doi.org/10.2208/JSCEJC.63.188","url":null,"abstract":"膨大な数の道路斜面を維持管理し，崩壊対策を効率的に進めていく上で，斜面の安定性を予備的・概略的に評価する手法が求められている．特に，きれつ性岩盤斜面では，岩盤条件によって崩壊形態が変化するが，これらを統一的かつ簡易に評価できる手法は少ない．そこで本論文では，複数の崩壊形態に対応したきれつ性岩盤斜面の簡易な安定性評価手法を提案する．提案手法は以下の特徴を持つ．1)くさび型ブロックと三角錐ブロックを評価単位とする．2)岩盤ブロックのすべりと落下および転倒を評価対象とする．3)安定解析は極限平衡論に基づく．4)きれつ面のすべり摩擦角と粘着力および引張り強度を考慮できる．5)外力として水圧と地震力を考慮できる．6)安定性評価条件を簡単なベクトル式で表現している．","PeriodicalId":131805,"journal":{"name":"Doboku Gakkai Ronbunshuu C","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130152537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
COMPARISON OF NON-LINEAR SEISMIC RESPONSE FOR ONE AND TWO DIMENSIONAL CONSIDERING THE SPATIAL DISTRIBUTION DUE TO IMHOMOGENITY OF SOIL PROPERTIES 考虑土性非均匀性空间分布的一、二维非线性地震反应比较
Doboku Gakkai Ronbunshuu C Pub Date : 1900-01-01 DOI: 10.2208/JSCEJC.63.711
Susumu Nakamura, S. Sawada, Toshikatsu Matsumoto
{"title":"COMPARISON OF NON-LINEAR SEISMIC RESPONSE FOR ONE AND TWO DIMENSIONAL CONSIDERING THE SPATIAL DISTRIBUTION DUE TO IMHOMOGENITY OF SOIL PROPERTIES","authors":"Susumu Nakamura, S. Sawada, Toshikatsu Matsumoto","doi":"10.2208/JSCEJC.63.711","DOIUrl":"https://doi.org/10.2208/JSCEJC.63.711","url":null,"abstract":"本論の目的は，地盤の非線形地震応答性状に及ぼす地盤物性の不均質な空間分布のモデル化の影響と課題を明らかにすることである．空間分布を考慮する地盤物性は，非線形モデルとして用いた双曲線モデルのパラメータであるせん断波速度と内部摩擦角の2つである．それらの空間分布は，ガウス型の確率変動モデルを用い，鉛直および水平方向の分布を考慮した2次元有限要素モデルと，鉛直方向のみ考慮した1次元有限要素モデルの2つの次元でモデル化を行った，2次元モデルの地震応答性状は，水平方向の地盤物性の空間分布に依存するが，全体として1次元地盤のような挙動を示すという結果が得られた．また，課題として，地盤物性の不均質な空間分布の情報が欠けており，情報の収集と分析の必要性が示された．","PeriodicalId":131805,"journal":{"name":"Doboku Gakkai Ronbunshuu C","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134541013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
NEW CALCULATION METHOD OF THE DISTRIBUTION OF GROUND CONTACT PRESSURE AND DISPLACEMENT UNDER IRREGULAR SHAPED RIGID FOUNDATIONS CONSIDERING ELASTO-PLASTIC BEHAVIOR OF GROUND 考虑地基弹塑性特性的异形刚性地基接触压力和位移分布计算新方法
Doboku Gakkai Ronbunshuu C Pub Date : 1900-01-01 DOI: 10.2208/JSCEJC.66.126
K. Ueda, R. Fukagawa
{"title":"NEW CALCULATION METHOD OF THE DISTRIBUTION OF GROUND CONTACT PRESSURE AND DISPLACEMENT UNDER IRREGULAR SHAPED RIGID FOUNDATIONS CONSIDERING ELASTO-PLASTIC BEHAVIOR OF GROUND","authors":"K. Ueda, R. Fukagawa","doi":"10.2208/JSCEJC.66.126","DOIUrl":"https://doi.org/10.2208/JSCEJC.66.126","url":null,"abstract":"本論文では，各種構築物の基礎構造の合理的な設計に関連して，地震時における直接基礎底盤の接地圧分布・変位を簡便に計算する手法を提案している．一般に，大きな外力を水平方向に考えて設計する地震時には，動的相互作用の影響による構築物基礎底面の浮き上がり現象が問題となる．従来法は，基礎と地盤との接触面上に力学的な支点を想定し，煩雑な繰り返し計算を必要としていたが，本論文ではその性状を1自由度の力学系に基づくロッキング・スウェイモデルにより表現し，弾・塑性域の発現を考慮した手法を提案している．また，単体の長方形基礎を対象に有限要素法に基づく三次元数値解析を実施し，提案した簡便な解析法の適用性・妥当性を検証している．","PeriodicalId":131805,"journal":{"name":"Doboku Gakkai Ronbunshuu C","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134555721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
PULLOUT RESISTANCE CHARACTERISTICS OF STRIPS FROM CEMENT-TREATED SOIL AND DESIGN METHOD OF STRIP IN REINFORCED EARTH WALL 水泥土条抗拔特性及加筋土墙条的设计方法
Doboku Gakkai Ronbunshuu C Pub Date : 1900-01-01 DOI: 10.2208/JSCEJC.66.516
Yukio Tasaka, Motoyuki Suzuki, Osamu Yoneda, Naoki Shimura, Yosuke Sugiyama
{"title":"PULLOUT RESISTANCE CHARACTERISTICS OF STRIPS FROM CEMENT-TREATED SOIL AND DESIGN METHOD OF STRIP IN REINFORCED EARTH WALL","authors":"Yukio Tasaka, Motoyuki Suzuki, Osamu Yoneda, Naoki Shimura, Yosuke Sugiyama","doi":"10.2208/JSCEJC.66.516","DOIUrl":"https://doi.org/10.2208/JSCEJC.66.516","url":null,"abstract":"帯鋼補強土壁工法において，補強材との摩擦抵抗が小さく，盛土材として不適とされる粘性土やシルトを固化処理して利用することが望まれている．しかし，固化処理に特有の粘着力の増加効果を反映した設計方法はまだ確立されていない．本論文では，その設計のための基礎的データを得ることを目的にして，土槽からの補強材の引抜き試験装置を作製し，土試料・上載圧・固化材添加量・養生時間・補強材長・補強材種類などの諸条件を変えた実験を行った．そして補強材の引抜き抵抗に及ぼす固化処理の効果を上記要因別に調べた．また，固化処理土の一軸圧縮強さと固化処理土中の補強材の最大引抜き抵抗の関係を検討し，それを基にした所要補強材長の設計式の一例を示した．","PeriodicalId":131805,"journal":{"name":"Doboku Gakkai Ronbunshuu C","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133577938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
EXPERIMENTAL STUDY ON THE EFFECT OF GEOGRIDS ON THE IMPROVEMENT IN THE BRITTLE TENSILE STRENGTH PROPERTY OF STABILIZED SOIL 土工格栅对稳定土脆性抗拉强度改善作用的试验研究
Doboku Gakkai Ronbunshuu C Pub Date : 1900-01-01 DOI: 10.2208/JSCEJC.63.312
S. Shigehisa, Y. Miyata, D. Suetsugu, H. Ochiai
{"title":"EXPERIMENTAL STUDY ON THE EFFECT OF GEOGRIDS ON THE IMPROVEMENT IN THE BRITTLE TENSILE STRENGTH PROPERTY OF STABILIZED SOIL","authors":"S. Shigehisa, Y. Miyata, D. Suetsugu, H. Ochiai","doi":"10.2208/JSCEJC.63.312","DOIUrl":"https://doi.org/10.2208/JSCEJC.63.312","url":null,"abstract":"","PeriodicalId":131805,"journal":{"name":"Doboku Gakkai Ronbunshuu C","volume":"162 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133596735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A LIGHTWEIGHT DYNAMIC CONE PENETROMETER FOR EVALUATION OF SHEAR STRENGTH OF NATURAL MASADO SLOPES 一种用于评估天然石砂边坡抗剪强度的轻型动力锥贯仪
Doboku Gakkai Ronbunshuu C Pub Date : 1900-01-01 DOI: 10.2208/JSCEJC.63.403
A. Athapaththu, T. Tsuchida, K. Suga, S. Kano
{"title":"A LIGHTWEIGHT DYNAMIC CONE PENETROMETER FOR EVALUATION OF SHEAR STRENGTH OF NATURAL MASADO SLOPES","authors":"A. Athapaththu, T. Tsuchida, K. Suga, S. Kano","doi":"10.2208/JSCEJC.63.403","DOIUrl":"https://doi.org/10.2208/JSCEJC.63.403","url":null,"abstract":"This paper presents a simple methodology for determination of in situ shear strength parameters by recently developed lightweight dynamic cone penetrometer. A series of laboratory calibration lightweight dynamic cone penetration tests, and direct shear tests with pore water pressure measurements were conducted at different void ratios and degrees of saturation. Based on the laboratory calibration test results, a method of determining void ratio, e from the data of cone resistance, qd was established for different degrees of saturation. A method of determining shear strength parameters from the data of qd was proposed based on the correlations developed between void ratios with qd and shear parameters.","PeriodicalId":131805,"journal":{"name":"Doboku Gakkai Ronbunshuu C","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133306818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 16
MODELING EXPERIMENT ON SURFACE SETTLEMENT FOR OVERBREAK EXCAVATION BY PIPE ROOF AUXILIARY METHOD 管顶辅助法超冲开挖地表沉降模拟试验
Doboku Gakkai Ronbunshuu C Pub Date : 1900-01-01 DOI: 10.2208/JSCEJC.65.609
K. Kishida, Minbon Ryu, Ying Cui, M. Kimura
{"title":"MODELING EXPERIMENT ON SURFACE SETTLEMENT FOR OVERBREAK EXCAVATION BY PIPE ROOF AUXILIARY METHOD","authors":"K. Kishida, Minbon Ryu, Ying Cui, M. Kimura","doi":"10.2208/JSCEJC.65.609","DOIUrl":"https://doi.org/10.2208/JSCEJC.65.609","url":null,"abstract":"パイプルーフ工法で鋼管を掘削挿入する際，鋼管表面の摩擦抵抗と継手部の摩擦抵抗を抑制するための拡大ビットとフリクションカッターによる余掘り掘削が行われる．結果として，鋼管周辺に余掘りによる空洞が生じ，土被りの小さい個所では地表面沈下を誘発する恐れがある．そこで本研究では，余掘り掘削による地表面沈下特性を明確にし，その余掘り掘削による地表面沈下対策を目的として，余掘り掘削を模擬した模型実験装置を開発し，実験を行った．実験では，土被り，余掘りの割合等の主要なパラメータが，地表面沈下に及ぼす影響を検討した．これらの結果を基に，地表面沈下を極力抑えるパイプルーフ工法の施工手順の提案を行った．","PeriodicalId":131805,"journal":{"name":"Doboku Gakkai Ronbunshuu C","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132146369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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