{"title":"Three-dimensional slope stability analysis by means of limit equilibrium method","authors":"Shingo Morimasa, K. Miura","doi":"10.1201/9780203885284-112","DOIUrl":"https://doi.org/10.1201/9780203885284-112","url":null,"abstract":"自然斜面，人工斜面のいずれにおいても，通常斜面は三次元形状を有しており，そのような斜面の形状は安定性に大きく影響すると考えられる。また，すべり面の三次元形状は，二次元解析よりも得られる安定係数を増加させることが知られている。このような斜面やすべり面の三次元形状の効果は，斜面の安定解析，特に斜面強度の逆解析においては重要である。しかし，これらの効果は系統的に検討されていない。そこで，本研究では直線斜面，および三次元斜面として湾曲斜面を取り上げ，極限平衡法による三次元安定解析を行い，これらの形状効果について検証した。解析の結果，すべり面の三次元効果は得られる安定係数を大きくするだけでなく，すべり面の深さに臨界値を与え有意な安定係数が得られることが分かった。また，斜面の三次元効果によりすべり面の最大形状が決まり，その斜面形状における安定係数の最小値が得られることが分かった。これらの結果は，Terzaghiの二次元安定図表を三次元版にアップグレードする形で整理した。","PeriodicalId":246019,"journal":{"name":"Jiban Kogaku Janaru (japanese Geotechnical Journal)","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":"116836146","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}
{"title":"A series of shaking table tests on the mechanism of earthquake-induced ground settlement around a fixed-base and rigid-body structure","authors":"M. Ishimaru, T. Kawai","doi":"10.3208/JGS.4.369","DOIUrl":"https://doi.org/10.3208/JGS.4.369","url":null,"abstract":"2007年新潟県中越沖地震の際，東京電力柏崎刈羽原子力発電所では，原子力発電所建屋近傍で局所的に大きな埋戻し土の沈下が生じた。本研究では，底面が固定された剛な構造物近傍地盤の地震時沈下メカニズムを推定し，その検証として行った振動台実験から，地盤と構造物の相対水平変位に起因した主働すべりにより構造物近傍で局所的な沈下が生じることを確認した。また，種々の地盤条件を変えた実験より，地盤と構造物の相対水平変位が大きいほど，また地盤のすべり抵抗が小さいほど，構造物近傍地盤の沈下量は大きくなることを示した。","PeriodicalId":246019,"journal":{"name":"Jiban Kogaku Janaru (japanese Geotechnical Journal)","volume":"57 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":"124658101","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}
{"title":"Study on application of digital vision metrology to slope monitoring system","authors":"M. Ryu, Y. Ohnishi, S. Nishiyama, T. Nakai","doi":"10.3208/JGS.3.109","DOIUrl":"https://doi.org/10.3208/JGS.3.109","url":null,"abstract":"","PeriodicalId":246019,"journal":{"name":"Jiban Kogaku Janaru (japanese Geotechnical Journal)","volume":"27 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":"124969555","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}
T. Tatsuhara, Shunsuke Jikihara, T. Tatsumi, T. Igarashi
{"title":"Effects of the layout of adsorption layer on immobilizing arsenic leached from excavated rocks","authors":"T. Tatsuhara, Shunsuke Jikihara, T. Tatsumi, T. Igarashi","doi":"10.3208/JGS.10.635","DOIUrl":"https://doi.org/10.3208/JGS.10.635","url":null,"abstract":"","PeriodicalId":246019,"journal":{"name":"Jiban Kogaku Janaru (japanese Geotechnical Journal)","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":"123656125","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}
{"title":"Experimental Study on Reinforcement Method of Levees by Sheet-pile","authors":"Kazutaka Otsushi, J. Koseki, Masaru Kaneko, Hiroyuki Tanaka, Naoya Nagao","doi":"10.3208/JGS.6.1","DOIUrl":"https://doi.org/10.3208/JGS.6.1","url":null,"abstract":"地震時の基礎地盤の液状化による河川堤防の沈下対策として，矢板等を堤防法尻部に設置する対策がなされている。また，集中豪雨などで越流が生じた場合に対しては，堤防の機能を維持させるために堤体内に天端高さまで矢板を配置する方法が検討されている。この工法の課題の一つとして，堤体内に矢板を配置することで地震時に矢板と地盤との境界面にひび割れが生じ，浸透特性に影響することが懸念される。そこで，地震時から高水時まで連続して再現する模型実験を実施し，地震時や越水時にも本工法により堤防機能が維持され，Ｌ2地震動相当の加振履歴を受けても浸透特性が変化しないことを確認した。さらに，矢板下端を液状化層内に留めて対策コストを低減したフローティング構造が有効であることも確認した。","PeriodicalId":246019,"journal":{"name":"Jiban Kogaku Janaru (japanese Geotechnical Journal)","volume":"175 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":"114542327","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}
{"title":"Evaluating method of shear strength and residual strength of aging cement-treated sands from its unconfined compression strength","authors":"M. Yamada, H. Ohta, Toshio Adachi","doi":"10.3208/JGS.5.339","DOIUrl":"https://doi.org/10.3208/JGS.5.339","url":null,"abstract":"","PeriodicalId":246019,"journal":{"name":"Jiban Kogaku Janaru (japanese Geotechnical Journal)","volume":"15 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":"116474136","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}
{"title":"Compressive characteristics of reconstituted marine clays with developed structures by adding a small amount of cement","authors":"Kaoru Udaka, T. Tsuchida, Y. Imai, Yixin Tang","doi":"10.3208/JGS.8.425","DOIUrl":"https://doi.org/10.3208/JGS.8.425","url":null,"abstract":"","PeriodicalId":246019,"journal":{"name":"Jiban Kogaku Janaru (japanese Geotechnical Journal)","volume":"45 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":"121654893","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}
Nobuyoshi Kotajima, Masabumi Suzuki, T. Nakade, M. Katayama, H. Tezuka, George Kisanuki
{"title":"Reduction of water measures of a tunnel spring containing arsenic in the Hokusatu tunnel: - Rock grouting of the mountains tunnel which applied a grouting technology of the dam -@@@－ダムのグラウチング技術を適用した山岳トンネルの岩盤グラウチング－","authors":"Nobuyoshi Kotajima, Masabumi Suzuki, T. Nakade, M. Katayama, H. Tezuka, George Kisanuki","doi":"10.3208/jgs.12.469","DOIUrl":"https://doi.org/10.3208/jgs.12.469","url":null,"abstract":"","PeriodicalId":246019,"journal":{"name":"Jiban Kogaku Janaru (japanese Geotechnical Journal)","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":"114772873","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}
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