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Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal)最新文献

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SHAKING TABLE MODEL TESTS OF BALLASTED TRACK REINFORCED WITH GEOSYNTHETIC BAGS 土工合成纤维袋加固有碴轨道振动台模型试验
Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal) Pub Date : 1900-01-01 DOI: 10.5030/JCIGSJOURNAL.23.215
Mikihito Kobayashi, M. Seki, Yasuhito Watanabe, Takashi Kachi, J. Koseki
{"title":"SHAKING TABLE MODEL TESTS OF BALLASTED TRACK REINFORCED WITH GEOSYNTHETIC BAGS","authors":"Mikihito Kobayashi, M. Seki, Yasuhito Watanabe, Takashi Kachi, J. Koseki","doi":"10.5030/JCIGSJOURNAL.23.215","DOIUrl":"https://doi.org/10.5030/JCIGSJOURNAL.23.215","url":null,"abstract":"大規模地震時のバラスト流出による軌道変位を抑制するため，ジオテキスタイル素材のネットにバラストを詰めたバッグを道床肩部に沿って積上げ積層体としたバラスト止めが提案されている．その耐震性能を確認するため，実物大軌道と実地震波による振動台試験を行った．その結果，ジオテキスタイル材料で補強したバラスト軌道構造はL2地震を超える大規模な地震動にも高い耐震性能を発揮し，バラストの流出を防止するとともに，道床横抵抗力の確保や軌道変位の抑制に効果があることが確認できた．また，更なる性能向上のためバッグを傾斜積みにするなど各種の構造改良を行い，水平支持力試験でその性能を確認した．改良構造による振動台試験では，道床断面が広く大きな慣性力が作用する場合にも，十分な耐震性能があることが確認できた．","PeriodicalId":165094,"journal":{"name":"Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal)","volume":"37 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":"115520043","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
INVESTIGATION OF CROSS-PLANE FLOW PERFORMANCE OF GEOTEXTILES CONSISTED OF DIFFERENT STRUCTURES 不同结构土工布的横向流动性能研究
Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal) Pub Date : 1900-01-01 DOI: 10.5030/JCIGSJOURNAL.25.113
Y. Kohata, N. Gamo, Jun-ichi Hironaka, T. Hirai
{"title":"INVESTIGATION OF CROSS-PLANE FLOW PERFORMANCE OF GEOTEXTILES CONSISTED OF DIFFERENT STRUCTURES","authors":"Y. Kohata, N. Gamo, Jun-ichi Hironaka, T. Hirai","doi":"10.5030/JCIGSJOURNAL.25.113","DOIUrl":"https://doi.org/10.5030/JCIGSJOURNAL.25.113","url":null,"abstract":"ジオテキスタイルをフィルター材として土中に敷設した場合，土粒子の侵入・捕捉に伴った目詰まりによる透水性能の低下が予想される。本研究では，ジオテキスタイルをフィルター材として用いたときの垂直方向透水性を検討することを目的として，構造的に製造方法が異なるジオテキスタイルを試料土層（千葉ローム）と礫層の間に挟んだ供試体に，動水勾配i = 1 及び 4 として，定水位透水試験を実施し，織布および不織布の垂直方向透水性について比較・検討した。実験結果より，本研究で使用した織布系ジオテキスタイルは不織布系ジオテキスタイルに比べて透水性が高いこと，目詰まり現象の発生はジオテキスタイルの材質に依存する可能性が高いことなどが明らかとなった。","PeriodicalId":165094,"journal":{"name":"Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal)","volume":"13 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":"115953858","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
GRS一体橋梁（実物大試験）の施工と動態計測 GRS一体桥梁（実物大试験）の施工と动态计测
Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal) Pub Date : 1900-01-01 DOI: 10.5030/JCIGSJOURNAL.24.219
達也 永谷, 幸彦 田村, 正敏 飯島, 勝 舘山, 謙一 小島, 健治 渡辺
{"title":"GRS一体橋梁（実物大試験）の施工と動態計測","authors":"達也 永谷, 幸彦 田村, 正敏 飯島, 勝 舘山, 謙一 小島, 健治 渡辺","doi":"10.5030/JCIGSJOURNAL.24.219","DOIUrl":"https://doi.org/10.5030/JCIGSJOURNAL.24.219","url":null,"abstract":"ジオシンセティックスで補強した橋台と橋桁を一体化したGRS(Geosynthetic-Reinforced Soil)一体橋梁の実用化に向けて，実物大規模の試験橋梁を構築した．施工は橋台背面の補強盛土部分を先行構築し，その後，橋台と橋桁を一体化したRC橋梁を構築した（幅3ｍ，高さ5.55ｍ，橋長14.75ｍ）．気温の季節変動および将来実施予定の L2 地震を模擬した水平載荷試験を想定して計測器を配置し動態計測を開始した．計測項目は，ジオシンセティックスの補強材力（ひずみ），一体橋梁と背面盛土の相対変位，フーチング底面の鉛直土圧・橋台背面土圧，橋台躯体の傾斜，温度，鉄筋応力などである．短期間（約４ヶ月）の動態計測結果ではあるが，温度の季節変動に伴いGRS 橋梁も変動しているが，その値は極めて小さく，橋長15ｍ程度のGRS 一体橋梁は極めて安定していることがわかった．","PeriodicalId":165094,"journal":{"name":"Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal)","volume":"26 9 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":"125682203","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
THE PILOT TEST OF COUNTERMEASURE AGAINST WAVE EROSION FOR ROAD EMBANKMENT IN BANGLADESH 孟加拉国道路堤防浪蚀对策的中试研究
Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal) Pub Date : 1900-01-01 DOI: 10.5030/JCIGSJOURNAL.25.99
K. Matsushima, Y. Mohri, K. Nakazawa, Kouji Yamada, T. Hori, M. Ariyoshi
{"title":"THE PILOT TEST OF COUNTERMEASURE AGAINST WAVE EROSION FOR ROAD EMBANKMENT IN BANGLADESH","authors":"K. Matsushima, Y. Mohri, K. Nakazawa, Kouji Yamada, T. Hori, M. Ariyoshi","doi":"10.5030/JCIGSJOURNAL.25.99","DOIUrl":"https://doi.org/10.5030/JCIGSJOURNAL.25.99","url":null,"abstract":"バングラデシュでは，毎年の洪水による波浪侵食が極めて深刻な問題となっている．脆弱な農村インフラ施設は，人命・財産を守れないばかりか，経済的な損失，施設の補修・改修費の増大を生み，貧困の悪循環を招いている．そこで，我々は，波浪侵食による農村インフラの被害防止・軽減を図ることを目的として，1)現地で入手可能な材料と，2)人力を主体とする施工技術を組み合わせた侵食対策工の開発に着手した．本報告では，湛水により厳しい波浪作用を受ける農村道路を対象として，扁平状の大型土嚢を斜面に傾斜して積層する工法（以下，土嚢積層工法という）を採用したパイロット試験（施工区間28.0m, 盛土高2.9m, 盛土勾配1V: 0.6H, 使用した土嚢袋数1,776 袋）について報告する．","PeriodicalId":165094,"journal":{"name":"Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal)","volume":"20 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":"125306471","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
APPLICABILITY OF GEOCOMPOSITE TO SLOPE OF LANDFILL CAP COVER 土工复合材料对填埋场盖坡的适用性
Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal) Pub Date : 1900-01-01 DOI: 10.5030/JCIGSJOURNAL.24.31
Masaki Nishimura, T. Akai, Shota Wada, C. Shinkai, Tsuyoshi Asada, M. Kamon
{"title":"APPLICABILITY OF GEOCOMPOSITE TO SLOPE OF LANDFILL CAP COVER","authors":"Masaki Nishimura, T. Akai, Shota Wada, C. Shinkai, Tsuyoshi Asada, M. Kamon","doi":"10.5030/JCIGSJOURNAL.24.31","DOIUrl":"https://doi.org/10.5030/JCIGSJOURNAL.24.31","url":null,"abstract":"廃棄物最終処分場の最終カバー層に用いるキャッピング材料として、筆者らは、多孔質シートと不織布から成るジオコンポジット（GC）を開発し、その適用性を評価してきた。通常、処分場に最終カバーをする場合、その最上層には覆土が設置されるが、GCが遮水性を有することに由来して、斜面部に敷設した場合、GCと覆土の界面、あるいは覆土内でのすべりが懸念される。したがって、GCを斜面部に適用するためには、降水の影響を含めた検討が必要である。本研究では、屋外の実験斜面（勾配1:2.0）にGCを敷設し、上部に層厚0.5 mの覆土を設置して、斜面の安定性を評価した。その結果、施工後1年が経過しても、GCおよび覆土は、すべりに対する安定性を有していることが確認された。また、GCを適用した斜面部最終カバー層について、設計方法の概要を示した。","PeriodicalId":165094,"journal":{"name":"Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal)","volume":"7 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":"114887007","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
EVALUATION OF VARIOUS FACTORS TO PULL-OUT RESISTANCE OF VARIOUS TYPES OF REINFORCEMENT EMBEDDED IN SAND 不同类型埋砂配筋抗拔性影响因素的评价
Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal) Pub Date : 1900-01-01 DOI: 10.5030/JCIGSJOURNAL.23.23
H. Nishikiori, Ryouichi Soma, Hiroyuki Aizawa, D. Hirakawa, F. Tatsuoka
{"title":"EVALUATION OF VARIOUS FACTORS TO PULL-OUT RESISTANCE OF VARIOUS TYPES OF REINFORCEMENT EMBEDDED IN SAND","authors":"H. Nishikiori, Ryouichi Soma, Hiroyuki Aizawa, D. Hirakawa, F. Tatsuoka","doi":"10.5030/JCIGSJOURNAL.23.23","DOIUrl":"https://doi.org/10.5030/JCIGSJOURNAL.23.23","url":null,"abstract":"新形式構造であるGRS 一体橋梁(Geosynthetic-Reinforced Soil Integral Bridge)の模型振動台実験の結果によると、その耐震安定性は壁面工背面に定着したジオテキスタイル補強材の引抜け抵抗が増加すると増加する。本研究では、種々の高分子材料のグリッド状補強材と模型実験で用いた人工的な補強材であるリン青銅のグリッド状補強材を用いて土中引抜き試験を行い、砂盛土からの引抜け特性を比較検討した。その結果、補強材の引抜け抵抗は、異なった拘束圧下において、①補強材表面での摩擦抵抗 (面内配置密度×表面摩擦) 、及び②横材前面での受動抵抗 (横材厚さ×横材本数) に依存することが分かった。また、この両者の影響を表現する経験式を導いた。この式によれば、補強材表面の摩擦抵抗と横材前面の受働抵抗の増加によって引抜け抵抗はある一定値までは線形的に増加するが、それ以降の増加による増加は殆どないことが分かった。","PeriodicalId":165094,"journal":{"name":"Jioshinsetikkusu Rombunshu (geosynthetics Engineering 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":"124096810","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
EVALUATING IN-SOIL AND PLANE HYDRAULIC TRANSMISSIVITY OF GEOSYNTHETICS DRAINS BY LABORATORY TEST 室内试验评价土工合成排水管的土内及平面水力透过率
Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal) Pub Date : 1900-01-01 DOI: 10.5030/JCIGSJOURNAL.23.51
J. Mitsui, K. Hara, K. Mitsumune, C. Gill, S. Shibuya
{"title":"EVALUATING IN-SOIL AND PLANE HYDRAULIC TRANSMISSIVITY OF GEOSYNTHETICS DRAINS BY LABORATORY TEST","authors":"J. Mitsui, K. Hara, K. Mitsumune, C. Gill, S. Shibuya","doi":"10.5030/JCIGSJOURNAL.23.51","DOIUrl":"https://doi.org/10.5030/JCIGSJOURNAL.23.51","url":null,"abstract":"In an attempt to reduce the risk for embankment failures induced by recent heavy rainfalls, geotechnical engineers are increasingly concerned with proper method for geosynthetic drains in an embankment. In such case, the in-plane hydraulic transmissivity could be deteriorated implying that clogging of the geosynthetic drains and/or the cross sectional area of the geosynthetic drains could be decreased by the compressive overburden stress. In engineering practice, thus it is great importance to evaluating the performance of geosynthetic drains in soil. In so doing, the in-soil hydraulic transmissivity of geosynthetics drains should be properly measured in the laboratory. In this study, the hydraulic transmissivity evaluated under different overburden pressures is focused on the variation of the cross sectional area of drainage material. Modified in-soil test apparatus after JGS(plan) is used with or without three kinds of soils showing different soil particle grading. In this study, the hydraulic transmissivity under different overburden pressures is evaluated. The tests focused on the variation of the cross sectional area of drainage material. Modified in-soil test apparatus after JGS(plan) is used with or without three kinds of soils showing different soil particle grading.","PeriodicalId":165094,"journal":{"name":"Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal)","volume":"97 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":"121821298","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
FLUME TEST ON EFFECTS OF GEOCOMPOSITE TO CONTROL LEVEE EROSION 土工复合材料控制堤防侵蚀效果的水槽试验
Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal) Pub Date : 1900-01-01 DOI: 10.5030/JCIGSJOURNAL.24.183
Tsuyoshi Tada, Y. Miyata, D. Hirakawa, S. Kondoh, K. Imagawa, Yasumasa Terada
{"title":"FLUME TEST ON EFFECTS OF GEOCOMPOSITE TO CONTROL LEVEE EROSION","authors":"Tsuyoshi Tada, Y. Miyata, D. Hirakawa, S. Kondoh, K. Imagawa, Yasumasa Terada","doi":"10.5030/JCIGSJOURNAL.24.183","DOIUrl":"https://doi.org/10.5030/JCIGSJOURNAL.24.183","url":null,"abstract":"多自然型の河川環境整備技術として，ジオシンセティックスを用いた侵食防止技術が注目されている．本研究は，より侵食防止効果の高いジオコンポジットの形状について検討するため，長さ16mの水路実験を行った．本論文では，その実験結果を報告し，ジオコンポジットの耐侵食効果の評価パラメータを提案する．","PeriodicalId":165094,"journal":{"name":"Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal)","volume":"9 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":"122707175","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
EXPERIMENTAL STUDY OF PERMEABILITY FOR REINFORCED GROUND WITH GEOGRID 土工格栅加筋地基渗透性试验研究
Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal) Pub Date : 1900-01-01 DOI: 10.5030/JCIGSJOURNAL.24.49
K. Uchida, Kohei Matsuda, Ikumi Iwade, Tomohiro Miyakawa, T. Kawabata, Kazuya Inoue
{"title":"EXPERIMENTAL STUDY OF PERMEABILITY FOR REINFORCED GROUND WITH GEOGRID","authors":"K. Uchida, Kohei Matsuda, Ikumi Iwade, Tomohiro Miyakawa, T. Kawabata, Kazuya Inoue","doi":"10.5030/JCIGSJOURNAL.24.49","DOIUrl":"https://doi.org/10.5030/JCIGSJOURNAL.24.49","url":null,"abstract":"近年，全国にある多くのため池が老朽化により改修の必要性が生じている．また，将来予想される地震を考慮して，ため池の耐震化が急務となってきており，ジオグリッドを用いた補強土工法を堤体に適用することなどが提案されている．しかしながら，ジオグリッド敷設が堤体の透水特性に与える影響については未解明のままである．そこで本研究では，ジオグリッドの有無が補強地盤の透水特性に与える影響を明らかにするため，大型三軸セル透水実験装置と大型土槽透水実験装置を用いて実験を行った．その結果，ジオグリッドが地盤の透水特性に与える影響は極めて小さいことがわかった．","PeriodicalId":165094,"journal":{"name":"Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal)","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":"125277080","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
GEOSYNTHETICS HYDRAULIC BARRIERS FOR COASTAL LANDFILLS 海岸堆填区的土工合成水工屏障
Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal) Pub Date : 1900-01-01 DOI: 10.5030/JCIGSJOURNAL.24.1
N. Kotake
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