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EXPERIMENTAL STUDY ON DEFORMATION BEHAVIOR OF REINFORCED EARTH WALL WITH DISCRERE-LAYOUT OF REINFORCEMENTS 不同配筋布置下加筋土墙变形特性试验研究
Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal) Pub Date : 1900-01-01 DOI: 10.5030/JCIGSJOURNAL.25.33
Y. Nabeshima, Yohei Saitsu, Mitsunobu Aoshima
{"title":"EXPERIMENTAL STUDY ON DEFORMATION BEHAVIOR OF REINFORCED EARTH WALL WITH DISCRERE-LAYOUT OF REINFORCEMENTS","authors":"Y. Nabeshima, Yohei Saitsu, Mitsunobu Aoshima","doi":"10.5030/JCIGSJOURNAL.25.33","DOIUrl":"https://doi.org/10.5030/JCIGSJOURNAL.25.33","url":null,"abstract":"補強土壁工法の工費に占める補強材費の割合が高いことから，建設コストの縮減を図るため，補強土壁の安定性を確保しつつ補強材の使用量を減らす方法が検討されている．補強材の敷設パターンを変えることにより，補強材の使用量を減らした場合に補強土壁の変形挙動にどのような影響が生じるかについて，小型模型実験における変形挙動をもとに検討する．小型模型実験の結果から，補強材間隔をあけた場合，補強材幅を1割程度削減した補強材でも，補強材間隔をあけずに全面的に敷設する場合よりも壁面変位量は小さくなったため，変位量を抑えながら補強材の使用量を縮減できる可能性が示された．","PeriodicalId":165094,"journal":{"name":"Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal)","volume":"25 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":"129693189","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
FULL SCALE SHAKING TABLE TESTS ON REINFORCED SMALL EARTH DAMS WITH SOIL BAG SYSTEM 土袋加固小土坝全尺寸振动台试验
Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal) Pub Date : 1900-01-01 DOI: 10.5030/JCIGSJOURNAL.24.157
K. Matsushima, Y. Mohri, F. Tatsuoka
{"title":"FULL SCALE SHAKING TABLE TESTS ON REINFORCED SMALL EARTH DAMS WITH SOIL BAG SYSTEM","authors":"K. Matsushima, Y. Mohri, F. Tatsuoka","doi":"10.5030/JCIGSJOURNAL.24.157","DOIUrl":"https://doi.org/10.5030/JCIGSJOURNAL.24.157","url":null,"abstract":"ため池は築造年代が古いものが多く，現在の設計基準と比較して不適格なものがかなり存在する．その一方，近年では豪雨や地震による災害リスクへの対応が社会的な課題となっており，減災効果が期待できる強化復旧技術の開発が強く望まれている．そのため，本研究では地震に強い堤体構造を開発することを目的に，土嚢積層システムを適用した補強ため池堤体の実物大の振動実験を実施した．実験では，通常の水平積み(δ=0°)および石垣のように背面側に傾斜積み(δ=18°)した実物大模型(堤高2.7 m, 下流勾配1H:1V)を作成し，規則波による段階加震を行った．その結果，水平積みタイプは最大加速度500gal 時点で土嚢間に滑動破壊が生じたが，傾斜積みタイプでは1,000gal でも土嚢間には滑動破壊が生じず，耐震性が大幅に向上することがわかった．","PeriodicalId":165094,"journal":{"name":"Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal)","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":"134016087","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 REINFORCED SOIL WALLS USING GEOGRID AND GEOCELL BY FULL-SCALE SLOPE-ROCKFALL TESTS 土工格栅和土工格室加筋土墙的全尺寸边坡落石试验评价
Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal) Pub Date : 1900-01-01 DOI: 10.5030/JCIGSJOURNAL.25.221
Tomonori Tajima, K. Maegawa, Masaru Shimada, Yoshihisa Murata, Takuya Akinaga, Shinobu Watanabe, Masakazu Namba, M. Tohda
{"title":"EVALUATION OF REINFORCED SOIL WALLS USING GEOGRID AND GEOCELL BY FULL-SCALE SLOPE-ROCKFALL TESTS","authors":"Tomonori Tajima, K. Maegawa, Masaru Shimada, Yoshihisa Murata, Takuya Akinaga, Shinobu Watanabe, Masakazu Namba, M. Tohda","doi":"10.5030/JCIGSJOURNAL.25.221","DOIUrl":"https://doi.org/10.5030/JCIGSJOURNAL.25.221","url":null,"abstract":"","PeriodicalId":165094,"journal":{"name":"Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal)","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":"122232595","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
Improvement of embankment stability against rainfall with geosynthetics 土工合成材料提高路堤抗雨稳定性
Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal) Pub Date : 1900-01-01 DOI: 10.5030/JCIGSJOURNAL.25.83
D. Hirakawa, Y. Miyata
{"title":"Improvement of embankment stability against rainfall with geosynthetics","authors":"D. Hirakawa, Y. Miyata","doi":"10.5030/JCIGSJOURNAL.25.83","DOIUrl":"https://doi.org/10.5030/JCIGSJOURNAL.25.83","url":null,"abstract":"我が国では「片切片盛の盛土」や「谷地の盛土」が多く構築されている．この様な盛土構造物には様々な降雨対策が施されているが，毎年多くの土構造物が降雨によって被災していることも事実である．気候変動に伴って顕在化してきた降雨量と降雨強度の増加に対応していくためには，積極的な降雨対策が必要である．本研究では室内降雨浸透実験を実施し，ジオシンセティックスによる盛土構造物の降雨時安定性の向上を検討した．この結果，被災の主要因である「盛土内地下水位面の上昇」と「地表水の流下による表面浸食・飽和化による盛土の流動変形」に対して，ジオシンセティックスによる土中水の排水と盛土の補強は降雨時安定性の向上に効果的である事を確認できた．","PeriodicalId":165094,"journal":{"name":"Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal)","volume":"18 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":"125721679","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
分割型壁面のジオテキスタイル補強土壁に関する動的遠心模型実験（その１ 実験条件および遠心力載荷時の安定性） 关于分体式墙面的地质加固土墙的动态离心模型实验(一、实验条件及装载离心力时的稳定性)
Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal) Pub Date : 1900-01-01 DOI: 10.5030/JCIGSJOURNAL.25.161
榎本 忠夫, 中島 進, 哲也 佐々木
{"title":"分割型壁面のジオテキスタイル補強土壁に関する動的遠心模型実験（その１ 実験条件および遠心力載荷時の安定性）","authors":"榎本 忠夫, 中島 進, 哲也 佐々木","doi":"10.5030/JCIGSJOURNAL.25.161","DOIUrl":"https://doi.org/10.5030/JCIGSJOURNAL.25.161","url":null,"abstract":"","PeriodicalId":165094,"journal":{"name":"Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal)","volume":"68 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":"130170668","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
EFFECTS OF TRANSVERSE RIBS ON PULLOUT RESISTANCE AND DEFORMATION DURING THE UNLOADING-RELOADING PROCESS 横肋对卸载-再加载过程中拉拔阻力和变形的影响
Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal) Pub Date : 1900-01-01 DOI: 10.5030/JCIGSJOURNAL.23.37
Giang .H. Nguyen, J. Kuwano, J. Izawa, S. Seki
{"title":"EFFECTS OF TRANSVERSE RIBS ON PULLOUT RESISTANCE AND DEFORMATION DURING THE UNLOADING-RELOADING PROCESS","authors":"Giang .H. Nguyen, J. Kuwano, J. Izawa, S. Seki","doi":"10.5030/JCIGSJOURNAL.23.37","DOIUrl":"https://doi.org/10.5030/JCIGSJOURNAL.23.37","url":null,"abstract":"It is considered that the pullout resistance is more affected by the transverse elements than the longitudinal elements. In this study a square and a circle opening type and a plate are tested of pullout resistance in Toyoura sand during the unloading-reloading process through a series of laboratory model tests. The results show that unloading-reloading process reduces the pullout resistance of both two types of geogrid and a plate at peak value and at the residual part. But the pullout resistance of the square geogrid type in this study is decreased more as well as less stable than that of the other two. Moreover, the square geogrid type takes larger displacement to reach to the peak values of pullout resistance than the circle and plate ones do. To discuss the effects, all of the deformation of soil around geogrid is observed while it is pulled out. The PIV analysis shows the mechanism and effects of transverse ribs on the pullout resistance.","PeriodicalId":165094,"journal":{"name":"Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal)","volume":"33 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":"128950573","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
FULL-SCALE CYCLIC DYNAMIC LOADING EXPERIMENTS OF THE GROUND REINFORCED BY GEOCELL AND GEOTEXTILE 土工格室与土工织物加筋地基全尺寸循环动力加载试验
Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal) Pub Date : 1900-01-01 DOI: 10.5030/JCIGSJOURNAL.24.201
Yuta Satoh, T. Tachibana, Kumiko Suzuki, K. Kaneko, Akinori Hazama, Masaru Shimada, K. Kumagai
{"title":"FULL-SCALE CYCLIC DYNAMIC LOADING EXPERIMENTS OF THE GROUND REINFORCED BY GEOCELL AND GEOTEXTILE","authors":"Yuta Satoh, T. Tachibana, Kumiko Suzuki, K. Kaneko, Akinori Hazama, Masaru Shimada, K. Kumagai","doi":"10.5030/JCIGSJOURNAL.24.201","DOIUrl":"https://doi.org/10.5030/JCIGSJOURNAL.24.201","url":null,"abstract":"本研究は，軟弱地盤上に敷設したジオテキスタイルとジオセルを使用したマットレス状構造物に，繰り返し載荷荷重を与え地盤及びジオテキスタイル構造物の安定性能を確認することを目的としている．いくつかのパターンで補強した実験路盤を実験場内に連続して作製し，路面上に荷重車両（大型車両：20トン・ダンプトラック）を繰り返し走行させることで，各補強工法の安定性について相対的に比較・検討する．本文では，地盤の沈下量等を計測した結果について報告する．","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":"127876900","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
MODEL TESTS ON THE TENSILE STRAIN AND THE TENSILE FORCE OF BARRIER SHEET CAUSED BY DIFFERENTIAL SETTLEMENT OF SUBGROUND 对地下沉降引起的障板拉应变和拉力进行了模型试验
Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal) Pub Date : 1900-01-01 DOI: 10.5030/JCIGSJOURNAL.25.247
S. Imaizumi, Kazuhito Satsuka, Kengo Kudou, Sadahiko Usami, H. Kanou, S. Matsuyama, T. Harada, Kenji Shibata
{"title":"MODEL TESTS ON THE TENSILE STRAIN AND THE TENSILE FORCE OF BARRIER SHEET CAUSED BY DIFFERENTIAL SETTLEMENT OF SUBGROUND","authors":"S. Imaizumi, Kazuhito Satsuka, Kengo Kudou, Sadahiko Usami, H. Kanou, S. Matsuyama, T. Harada, Kenji Shibata","doi":"10.5030/JCIGSJOURNAL.25.247","DOIUrl":"https://doi.org/10.5030/JCIGSJOURNAL.25.247","url":null,"abstract":"海面埋立処分場は軟弱な地盤上に建設されることが多く，埋立地底部地盤が広域にわたり沈下したり，護岸部と埋立部の境界で不等沈下が生じる．このとき，処分場内に敷設された遮水シートには伸び変形が生じる．本研究では，LLDPE(直鎖型低密度ポリエチレン)シートとそれより剛性が小さいPVC(ポリ塩化ビニル)シートを用いて，基盤が一様に沈下する大型模型実験を行い，沈下の進行に伴うひずみの発生・分布状況，固定端張力を計測した．その結果，(1)基盤沈下に伴い生じる遮水シートの軸ひずみは沈下の境界に集中して発生し，剛性の大きいLLDPEの方がPVCに比べて最大値は小さく，軸ひずみが発生する範囲は大きいこと，(2)不等沈下量に対して仮想張力を未知数とする弾性モデルを用いて計算した最大軸ひずみは，LLDPEシートでは実験で得られた測定値にほぼ対応することなどを明らかにした．","PeriodicalId":165094,"journal":{"name":"Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal)","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":"128024778","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
STUDY ON THE METHOD FOR APPARENT OPENING SIZE TESTS OF GEOTEXTILE 土工布表观开口尺寸试验方法的研究
Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal) Pub Date : 1900-01-01 DOI: 10.5030/JCIGSJOURNAL.23.45
Y. Kohata, Fumitaka Shimaya, Jun-ichi Hironaka, T. Hirai
{"title":"STUDY ON THE METHOD FOR APPARENT OPENING SIZE TESTS OF GEOTEXTILE","authors":"Y. Kohata, Fumitaka Shimaya, Jun-ichi Hironaka, T. Hirai","doi":"10.5030/JCIGSJOURNAL.23.45","DOIUrl":"https://doi.org/10.5030/JCIGSJOURNAL.23.45","url":null,"abstract":"","PeriodicalId":165094,"journal":{"name":"Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal)","volume":"8 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":"117091786","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
Impact resistance test for rock fall preventing fence using fiber nets and ropes 纤维网和绳索防落石围栏抗冲击试验
Jioshinsetikkusu Rombunshu (geosynthetics Engineering Journal) Pub Date : 1900-01-01 DOI: 10.5030/JCIGSJOURNAL.23.113
Masaki Yoshida, H. Kobayashi, Motoomi Arakawa, Hisao Okumura
{"title":"Impact resistance test for rock fall preventing fence using fiber nets and ropes","authors":"Masaki Yoshida, H. Kobayashi, Motoomi Arakawa, Hisao Okumura","doi":"10.5030/JCIGSJOURNAL.23.113","DOIUrl":"https://doi.org/10.5030/JCIGSJOURNAL.23.113","url":null,"abstract":"斜面災害には様々な形態があるが，土石流や地すべりなど大規模災害を除くと，その多くは表層崩壊の土砂崩れや落石災害などが占めている．これらの災害による被害を防止するために各種対策が実施されている．高エネルギ－吸収柵や斜面覆い工などのネットやロ－プを使用した対策工では金網やワイヤ－などの鉄製品が多く１）繊維部材が用いられている例は仮設や設計外力の少ない対策以外ではほとんど見受けられない．鉄部材は重量物であり斜面上の施工に弊害があるという問題点に対し，軽量でしなやかな繊維部材は斜面上での施工に適していると考えられている．しかし使用頻度が少ない要因としては対策工の信頼性や耐久性に不明確なところがあることが原因と考えられている． 本研究では，柔軟で高強度の繊維部材を用いた対策工の耐衝撃性試験を実施し，その衝撃吸収性能や衝突時の損傷の程度を確認し，対策工の有効性を確認した．","PeriodicalId":165094,"journal":{"name":"Jioshinsetikkusu Rombunshu (geosynthetics Engineering 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":"115208785","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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