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Doboku Gakkai Ronbunshuu C最新文献

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UNDRAINED CYCLIC SHEAR BEHAVIOR OF SAND AND CLAY MIXTURE SUBJECTED TO INITIAL STATIC SHEAR STRESS 初始静剪应力作用下砂粘土混合物的不排水循环剪切特性
Doboku Gakkai Ronbunshuu C Pub Date : 2006-03-21 DOI: 10.2208/JSCEJC.62.240
M. Hyodo, Jonggun Kim, Keisuke Fukumoto, S. Yamada, N. Yoshimoto
{"title":"UNDRAINED CYCLIC SHEAR BEHAVIOR OF SAND AND CLAY MIXTURE SUBJECTED TO INITIAL STATIC SHEAR STRESS","authors":"M. Hyodo, Jonggun Kim, Keisuke Fukumoto, S. Yamada, N. Yoshimoto","doi":"10.2208/JSCEJC.62.240","DOIUrl":"https://doi.org/10.2208/JSCEJC.62.240","url":null,"abstract":"珪砂と海成粘土の砂粘土混合土を作成し，等方および異方圧密下で一連の非排水繰返し三軸試験を行った．砂から粘土に至る土の細粒分含有率の違いが繰返しせん断挙動に与える影響について調べた．等方圧密下での繰返しせん断試験によって，骨格間隙比が骨格砂の最大問隙比より低い，細粒分含有率が Fc=9.8％未満の混合土は液状化を起こすが，それ以上の細粒分含有率では過剰間隙水圧が有効拘束圧まで到達しないことが観察された．異方圧密においては，塑性指数の高い試料ほど残留ひずみによる繰返しせん断破壊を起こしやすいこと，Fc=20％付近で，砂骨格と粘性土の強度が加算され強度が高くなることなどが認められた．さらに細粒分含有率が Fc=30％を越えると強度は粘土に近くなることが明らかとなった．","PeriodicalId":131805,"journal":{"name":"Doboku Gakkai Ronbunshuu C","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125469191","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: 3
A CONSIDERATION ON LOCAL PIPING DUE TO UPWARD SEEPAGE FLOW 向上渗流对局部管道的考虑
Doboku Gakkai Ronbunshuu C Pub Date : 1900-01-01 DOI: 10.2208/JSCEJC.63.602
Kiichi Suzuki, H. Motoyoshi, M. Oda
{"title":"A CONSIDERATION ON LOCAL PIPING DUE TO UPWARD SEEPAGE FLOW","authors":"Kiichi Suzuki, H. Motoyoshi, M. Oda","doi":"10.2208/JSCEJC.63.602","DOIUrl":"https://doi.org/10.2208/JSCEJC.63.602","url":null,"abstract":"浸透破壊現象に対するより信頼性の高い判定基準を確立するためには，浸透破壊の現象の理解およびデータの蓄積が不可欠である．本研究では，ガラスビーズを試料として粒子形状や細粒分等の影響を除外し，平面ひずみ状態に近い直方体容器を用いた上向き鉛直浸透流による基本的な浸透破壊実験を行った．写真により浸透破壊の進展状況を明らかにするとともに，ボイリングあるいは全体的なパイピングによって浸透破壊を生じる以前の動水勾配で，前兆として供試体表面での小さい粒子の飛び跳ねが観察され，間隙比変化および流量変化の同時性から，供試体の構造の変化に起因した局所的パイピングであることを解明した．","PeriodicalId":131805,"journal":{"name":"Doboku Gakkai Ronbunshuu C","volume":"34 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":"115749216","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
VERIFICATION OF AN EQUIVALENT SIMULATION METHOD FOR A CLAY-SAND-CLAY SUBSOIL PRECONSOLIDATED BY VACUUM-SURCHARGE 真空堆填土预固结粘土-砂-粘土地基等效模拟方法的验证
Doboku Gakkai Ronbunshuu C Pub Date : 1900-01-01 DOI: 10.2208/JSCEJC.65.383
T. Tran, T. Mitachi
{"title":"VERIFICATION OF AN EQUIVALENT SIMULATION METHOD FOR A CLAY-SAND-CLAY SUBSOIL PRECONSOLIDATED BY VACUUM-SURCHARGE","authors":"T. Tran, T. Mitachi","doi":"10.2208/JSCEJC.65.383","DOIUrl":"https://doi.org/10.2208/JSCEJC.65.383","url":null,"abstract":"To carry out a 2D simulation of soft ground improved by vertical drains under embankment combined with vacuum preloading, a method to convert the axisymmetric consolidation of the drain to plane-strain consolidation is needed. The paper presents and verifies a proposed conversion method for a sandwich subsoil, where a sand layer is sandwiched between two clay layers, which is often found in many areas in Japan. The analyzed results showed that the proposed method produced very good matching results, not only for the drain having no-well resistance, but also for the drain having high well resistance in the subsoil.","PeriodicalId":131805,"journal":{"name":"Doboku Gakkai Ronbunshuu C","volume":"32 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":"124901539","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
NUMERICAL SIMULATION OF FAILURE BEHAVIOR AND CRACK PROPAGATION OF ROCK SLOPE BY 3D DEM 基于三维dem的岩质边坡破坏行为及裂纹扩展数值模拟
Doboku Gakkai Ronbunshuu C Pub Date : 1900-01-01 DOI: 10.2208/JSCEJC.64.607
S. Ohtsuki, H. Kusumi, T. Matsuoka
{"title":"NUMERICAL SIMULATION OF FAILURE BEHAVIOR AND CRACK PROPAGATION OF ROCK SLOPE BY 3D DEM","authors":"S. Ohtsuki, H. Kusumi, T. Matsuoka","doi":"10.2208/JSCEJC.64.607","DOIUrl":"https://doi.org/10.2208/JSCEJC.64.607","url":null,"abstract":"","PeriodicalId":131805,"journal":{"name":"Doboku Gakkai Ronbunshuu C","volume":"12 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":"125807173","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
SIMPLIFIED PREDICTION FOR SETTLEMENT OF LIQUEFIED GROUND WITH ELASTO-PLASTIC MODEL 用弹塑性模型简化液化地基沉降预测
Doboku Gakkai Ronbunshuu C Pub Date : 1900-01-01 DOI: 10.2208/JSCEJC.63.806
R. Uzuoka, Noriaki Sento, Y. Shimizu, Akiyoshi Kamura, M. Kazama
{"title":"SIMPLIFIED PREDICTION FOR SETTLEMENT OF LIQUEFIED GROUND WITH ELASTO-PLASTIC MODEL","authors":"R. Uzuoka, Noriaki Sento, Y. Shimizu, Akiyoshi Kamura, M. Kazama","doi":"10.2208/JSCEJC.63.806","DOIUrl":"https://doi.org/10.2208/JSCEJC.63.806","url":null,"abstract":"有効応力解析では数値解析上の最小有効応力（有効応力の下限値）が必要となる場合がある．本研究では，既往の体積変形モデルで用いた最小有効応力を，弾塑性理論の枠内で有効応力解析における最小有効応力に応用し，水平地盤の振動中の液状化発生から地震後の過剰間隙水圧消散に伴う沈下までを定量的に予測した結果を示す．既往の弾塑性モデルを用いた有効応力解析に本手法を適用し，室内試験および飽和砂地盤の動的遠心模型実験のシミュレーションを通じて，本手法の妥当性を検討する．","PeriodicalId":131805,"journal":{"name":"Doboku Gakkai Ronbunshuu C","volume":"11 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":"125851032","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
ANALYSIS OF SEISMIC DISPLACEMENTS OF SLOPES APPLIED VIBRATORY CONVEYANCE THEORY 应用振动传输理论分析边坡地震位移
Doboku Gakkai Ronbunshuu C Pub Date : 1900-01-01 DOI: 10.2208/JSCEJC.65.162
Y. Okamura, K. Sako, R. Fukagawa
{"title":"ANALYSIS OF SEISMIC DISPLACEMENTS OF SLOPES APPLIED VIBRATORY CONVEYANCE THEORY","authors":"Y. Okamura, K. Sako, R. Fukagawa","doi":"10.2208/JSCEJC.65.162","DOIUrl":"https://doi.org/10.2208/JSCEJC.65.162","url":null,"abstract":"地震時の斜面に生じる土塊のすべり変位解析には，一般的にNewmark法が採用されている．しかし，この方法は弾塑性的に動く土塊を剛体として計算するため，解析の精度が悪くなる．そこで，本論文では，地震時のすべり土塊の変位量を解析するために，弾塑性体の解析に使われる動的FEMおよび剛体の変位を計算する振動輸送理論を適用し，新たな解析手法“弾塑性振動移動理論”を提案した．この新理論の解析結果は，模型斜面の振動実験の結果と比較したところ，新理論が従来の理論よりも精度よく解析できることが明らかになった．","PeriodicalId":131805,"journal":{"name":"Doboku Gakkai Ronbunshuu C","volume":"63 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":"125952916","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
STUDY ON SIMULATION ANALYSES OF DEFORMED TUNNELS DUE TO EARTH PRESSURE BY GROUND STRENGTH REDUCTION MODEL AND IT'S APPLICABILITY TO LONG TERM PREDICTION 利用地基强度折减模型对土压力作用下隧道变形的模拟分析及其长期预测的适用性进行了研究
Doboku Gakkai Ronbunshuu C Pub Date : 1900-01-01 DOI: 10.2208/JSCEJC.65.107
K. Yashiro, Kei Shimamoto, Y. Kojima, Mikio Takahashi, T. Matsunaga, T. Asakura
{"title":"STUDY ON SIMULATION ANALYSES OF DEFORMED TUNNELS DUE TO EARTH PRESSURE BY GROUND STRENGTH REDUCTION MODEL AND IT'S APPLICABILITY TO LONG TERM PREDICTION","authors":"K. Yashiro, Kei Shimamoto, Y. Kojima, Mikio Takahashi, T. Matsunaga, T. Asakura","doi":"10.2208/JSCEJC.65.107","DOIUrl":"https://doi.org/10.2208/JSCEJC.65.107","url":null,"abstract":"","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":"123806118","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: 5
DEVELOPMENT OF HIGH-RESOLUTION GEOLOGICAL SURVEY BY HIGH FREQUENCY SEISMIC WAVE 高频地震波高分辨率地质调查的发展
Doboku Gakkai Ronbunshuu C Pub Date : 1900-01-01 DOI: 10.2208/JSCEJC.65.97
J. Sakakibara, Tokuo J. Yamamoto
{"title":"DEVELOPMENT OF HIGH-RESOLUTION GEOLOGICAL SURVEY BY HIGH FREQUENCY SEISMIC WAVE","authors":"J. Sakakibara, Tokuo J. Yamamoto","doi":"10.2208/JSCEJC.65.97","DOIUrl":"https://doi.org/10.2208/JSCEJC.65.97","url":null,"abstract":"高周波数の弾性波を用いた高精度な地盤調査手法を開発した．本手法は擬似ランダム波を発振波として用いることで周波数を正確に制御すると共に，地盤中における減衰の影響を低減することで高周波数の弾性波を用いた計測を行うことができる．これにより高精度でかつ実用的な計測距離での調査が可能となった．中部国際空港建家基礎建設工事においては支持地盤の不陸が激しいため基礎杭の高止まりや杭長不足などのリスクが懸念されていたが，本手法による精度の高い計測結果を基に基礎杭の杭長設計を行い，これらのリスクを未然に回避することができた．本手法の効果を把握するために，ボーリング調査のみによる杭長設計との比較を行った結果，約40%以上のコスト削減効果があったことが分った．","PeriodicalId":131805,"journal":{"name":"Doboku Gakkai Ronbunshuu C","volume":"49 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":"125346160","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
A STUDY ON NUMERICAL SIMULATION METHOD FOR PLAIN CONCRETE TUNNEL LINING CONSIDERING SOFTENING DUE TO COMPRESSION FAILURE 考虑压缩破坏软化的素面混凝土隧道衬砌数值模拟方法研究
Doboku Gakkai Ronbunshuu C Pub Date : 1900-01-01 DOI: 10.2208/JSCEJC.65.1024
K. Yashiro, Y. Kojima, Yasushi Arai, N. Okano, J. Takemura
{"title":"A STUDY ON NUMERICAL SIMULATION METHOD FOR PLAIN CONCRETE TUNNEL LINING CONSIDERING SOFTENING DUE TO COMPRESSION FAILURE","authors":"K. Yashiro, Y. Kojima, Yasushi Arai, N. Okano, J. Takemura","doi":"10.2208/JSCEJC.65.1024","DOIUrl":"https://doi.org/10.2208/JSCEJC.65.1024","url":null,"abstract":"昨今の各種土木構造物の設計法の性能照査型への移行の流れを受け，山岳トンネルの覆工についても性能照査型設計法の導入に向けての検討が始まっている．このような背景から，筆者らは，トンネルの限界状態と考えられる無筋コンクリート覆工の圧ざに着目し，圧縮破壊後の軟化を考慮することにより無筋コンクリートの圧ざを表現できる解析モデルを提案した．本モデルを用いて1/5スケール覆工モデルによる模型実験のシミュレーション解析や，実際の山岳トンネルの地震被害の再現解析を行った．その結果，本モデルにより無筋コンクリートのひび割れや圧ざの表現が可能であること，また，実トンネルの地震被害が正しく表現できることがわかった．","PeriodicalId":131805,"journal":{"name":"Doboku Gakkai Ronbunshuu C","volume":"16 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":"115547125","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
PROPAGATION PROPERTIES OF SUBWAY-INDUCED VIBRATION OBTAINED BY CENTRIFUGE MODEL TEST 通过离心模型试验获得地铁诱导振动的传播特性
Doboku Gakkai Ronbunshuu C Pub Date : 1900-01-01 DOI: 10.2208/JSCEJC.63.13
K. Tsuno, Wataru Morimoto, K. Itoh, O. Murata, O. Kusakabe
{"title":"PROPAGATION PROPERTIES OF SUBWAY-INDUCED VIBRATION OBTAINED BY CENTRIFUGE MODEL TEST","authors":"K. Tsuno, Wataru Morimoto, K. Itoh, O. Murata, O. Kusakabe","doi":"10.2208/JSCEJC.63.13","DOIUrl":"https://doi.org/10.2208/JSCEJC.63.13","url":null,"abstract":"本研究では，模型トンネルに内蔵した小型起振機を用いて加振することにより，遠心場で地下鉄の列車走行時振動を模擬できる実験方法を構築した．そして，遠心模型実験を実施して地中部および地表部の振動加速度を測定することにより，振動の周波数特性や地中部における振動加速度の分布など，地盤中の振動伝播性状を把握した．また，Bornitzの計算式を用いて内部減衰定数αを計算し，遠心加速度が15G～62.5Gではαの値がほぼ同じであり，70Hz以下の周波数域においては東京およびその近郊の14地点で実施した現場測定の結果と概ね対応していることを確認した．さらに，模型地盤内に模型杭を設置し，トンネルに近接する建物の杭を伝わる振動について，伝播性状を把握した．","PeriodicalId":131805,"journal":{"name":"Doboku Gakkai Ronbunshuu C","volume":"1 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":"122466312","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
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