{"title":"WATERPROOF CHARACTERISTICS OF GEOCOMPOSITE FOR LANDFILL CAP COVER UNDER TENSILE DEFORMATION","authors":"Masaki Nishimura, T. Akai, M. Kamon","doi":"10.5030/JCIGSJOURNAL.25.241","DOIUrl":"https://doi.org/10.5030/JCIGSJOURNAL.25.241","url":null,"abstract":"","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":"133119477","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":"Investigation of direct shear behavior on tire chips using X-ray CT","authors":"Satomi Shimada, H. Hemanta, J. Otani, Y. Kikuchi","doi":"10.5030/JCIGSJOURNAL.23.75","DOIUrl":"https://doi.org/10.5030/JCIGSJOURNAL.23.75","url":null,"abstract":"","PeriodicalId":165094,"journal":{"name":"Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal)","volume":"55 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":"130905857","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}
Akihiko Okamura, M. Kurata, Y. Kitamoto, Teruhiro Yoshida
{"title":"CONSTRUCTION OF A LATTICE-FRAME-REINFORCED SHEET ON THE SOFT GROUND","authors":"Akihiko Okamura, M. Kurata, Y. Kitamoto, Teruhiro Yoshida","doi":"10.5030/jcigsjournal.23.107","DOIUrl":"https://doi.org/10.5030/jcigsjournal.23.107","url":null,"abstract":"格子ジャケットを用いたシート工法は,筒状織物に流動性の高いモルタルを充填して格子状の補強枠を形成する表層安定処理工法で,格子構造が荷重分散効果を有し,軟弱地盤上に施工することで不同沈下の抑制が行える.これまでに水田上におけるトラフィカビリティーの改善実験や鉄道路床の試験施工,および河川護岸工事における短期間の仮設道路としての使用などの実績がある.本報告では深さ10m近くまでN値の低い地盤が堆積している軟弱地盤上に一般道路の仮設道路として施工した例を紹介すると共に,使用期間が1年以上と比較的長期にわたるため,追跡調査を行い施工後の状況について詳細調査を行った結果を報告する.","PeriodicalId":165094,"journal":{"name":"Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal)","volume":"58 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":"121635235","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}
K. Fujimoto, Y. Watanabe, Bastien Chevarier, J. Otani, Jun-ichi Hironaka
{"title":"EFFECT OF ANISOTROPY OF GEOGRID STIFFNESS ON LOAD TRANSFER MECHANISM OF PILE-GEOGRID COMBINED METHODS","authors":"K. Fujimoto, Y. Watanabe, Bastien Chevarier, J. Otani, Jun-ichi Hironaka","doi":"10.5030/JCIGSJOURNAL.25.65","DOIUrl":"https://doi.org/10.5030/JCIGSJOURNAL.25.65","url":null,"abstract":"The construction of embankment on soft ground often causes the differential settlement. A deep mixing method of soil stabilization and earth reinforcement technology using geogrid are used in order to reduce this settlement. It is usually considered that embankment load can be transferred with arching effect and membrane effect of geogrid. However, only the geogrid tensile stiffness in one direction of it orientation is considered for present design. The geogrid is a multidimensional structure and it is considered that a membrane effect is on not only one direction but also two or other direction depending on its orientation. The objective of this paper is to investigate the effect of anisotropy of geogrid stiffness on load transfer mechanism of pile-geogrid combined method using Discrete Element Method (DEM). As a conclusion, the load transfer mechanism depending on the geogrid orientation was clearly observed.","PeriodicalId":165094,"journal":{"name":"Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal)","volume":"65 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":"127140242","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. Kiyota, R. Soma, H. Munoz, Tetsuya Kuroda, Jun-ichiro Ohta, M. Harata, F. Tatsuoka
{"title":"PULLOUT BEHAVIOUR OF GEO-CELL PLACED AS REINFORCEMENT IN BACKFILL","authors":"T. Kiyota, R. Soma, H. Munoz, Tetsuya Kuroda, Jun-ichiro Ohta, M. Harata, F. Tatsuoka","doi":"10.5030/JCIGSJOURNAL.24.75","DOIUrl":"https://doi.org/10.5030/JCIGSJOURNAL.24.75","url":null,"abstract":"","PeriodicalId":165094,"journal":{"name":"Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal)","volume":"55 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":"121516933","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. Kawabata, Y. Sawada, Ayumu Kashiwagi, Y. Mohri, K. Uchida
{"title":"REINFORCEMENT OF PASSIVE AREA AGAINST THRUST FORCE FOR BURIED BEND USING GEOSYNTHETICS","authors":"T. Kawabata, Y. Sawada, Ayumu Kashiwagi, Y. Mohri, K. Uchida","doi":"10.5030/JCIGSJOURNAL.23.127","DOIUrl":"https://doi.org/10.5030/JCIGSJOURNAL.23.127","url":null,"abstract":"Thrust forces can be generated at the bend of a pipeline due to internal water pressure. Commonly, the thrust force is resisted by passive resistance acting on the bend. A concrete block can be installed at the bend when the thrust force is larger than the passive resistance. However, the heavy concrete block can become a weak point during an earthquake, because the concrete block moves largely due to inertia force. Therefore, new methods for thrust restraint are required. In this paper, new backfill methods for thrust restraint using geogrids are proposed. The new method comprised geogrids, installed in the passive area to improve the strength of the ground. In addition, gravel was used as backfill material in the passive area of the bend. In order to verify the effect of the proposed methods, lateral loading experiments were carried out using a model pipe with a diameter of 114 mm. The model pipe was backfilled with dry sand. After backfilling, the model pipe was laterally loaded at 0.5 mm/min. using a jack. The lateral resistance and lateral displacement acting on the model pipe were both measured. It was confirmed that the lateral resistance increased when using the proposed methods.","PeriodicalId":165094,"journal":{"name":"Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal)","volume":"92 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":"116910634","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}
M. Fukuda, Zyoji Nishiura, H. Nishi, Tomohiro Yamazki
{"title":"The role of geo-synthetics materials applied for slope stability and its evaluation method","authors":"M. Fukuda, Zyoji Nishiura, H. Nishi, Tomohiro Yamazki","doi":"10.5030/JCIGSJOURNAL.24.137","DOIUrl":"https://doi.org/10.5030/JCIGSJOURNAL.24.137","url":null,"abstract":"降雨に対する斜面崩壊防止対策工としてのジオシンセティックス補強法の役割を概略的・総合的に評価する方法を検討する.斜面崩壊防止方法を体系化することによって要求される性能や材料特性あるいは構造様式や組み合わせなどの意義づけを行い,ジオシンセティックス補強材による開発の方向性を定量的に明確にすることを目的とする.特に表層からの浸透効果を検討する.使用したモデルは斜面の3平行層モデルであり,表層からの浸潤化,滑り面からの地下水上昇の影響を組み入れるモデルを設定した.そして平行層モデルの一般化の範囲を明確にして,ジオシンセティックス材料の役割あるいは付与する性能の評価を行った.また進行性斜面崩壊現象を定義し,日常的な斜面の維持管理におけるジオシンセティックス材料や開発方向を明確にする試みを行う.","PeriodicalId":165094,"journal":{"name":"Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal)","volume":"3 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":"128464413","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}