Y. Furuya, Y. Hagihara, Masayuki Ota, S. Arai, H. Kusaka
{"title":"A study on the liquefaction judgment method of diluvia sandy soil layers","authors":"Y. Furuya, Y. Hagihara, Masayuki Ota, S. Arai, H. Kusaka","doi":"10.3208/JGS.9.633","DOIUrl":"https://doi.org/10.3208/JGS.9.633","url":null,"abstract":"","PeriodicalId":246019,"journal":{"name":"Jiban Kogaku Janaru (japanese Geotechnical 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":"125617573","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":"Prevention of liquefaction of shallow backfill ground and of up-lift of underground facilities by use of stabilized mud","authors":"Y. Murakami, S. Goto, Tetsuya Yoneyama","doi":"10.3208/jgs.2.87","DOIUrl":"https://doi.org/10.3208/jgs.2.87","url":null,"abstract":"建設泥土を消石灰で安定処理して造粒化させた礫を砂に混合させ，それを埋戻し材として用いる場合について，地震発生時での浅い埋戻し地盤の液状化ならびにそこに埋設された管路の浮き上がりを防止できる可能性を振動台実験によって調べた。その結果，同じ相対密度でみた場合，砂に対する礫の混合比率が高いほど，過剰間隙水圧の発生量を低減できることが分かった。また，砂と礫の質量混合比を7：3程度,かつ相対密度を50% 以上に締め固めることによって，埋戻し地盤の液状化と埋設管の浮き上がりを十分に抑止できることが明らかにされた。","PeriodicalId":246019,"journal":{"name":"Jiban Kogaku Janaru (japanese Geotechnical 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":"123890758","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}
H. Muto, Takashi Kamiya, A. Naganuma, T. Kodaka, C. Ying, M. Nakano, T. Noda
{"title":"Small-Scale Pull-out Test of The Reinforcement Member Incorporating Both Friction Resistance and Bearing Resistance","authors":"H. Muto, Takashi Kamiya, A. Naganuma, T. Kodaka, C. Ying, M. Nakano, T. Noda","doi":"10.3208/JGS.11.201","DOIUrl":"https://doi.org/10.3208/JGS.11.201","url":null,"abstract":"","PeriodicalId":246019,"journal":{"name":"Jiban Kogaku Janaru (japanese Geotechnical 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":"125704764","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":"Settlement-time behavior of peat ground and applicability of conventional predicting methods","authors":"Nobutaka Yamazoe, Hiroyuki Tanaka, H. Hayashi, T. Mitachi","doi":"10.3208/JGS.6.395","DOIUrl":"https://doi.org/10.3208/JGS.6.395","url":null,"abstract":"泥炭地盤上での建設工事では，大きな沈下が長期間に渡り発生するため，その予測は工学的に重要な課題の一つである。本論文では，泥炭地盤の圧密沈下挙動の予測を困難としている主要な要因として，原位置透水係数の評価や圧密沈下に伴う層厚減少，せん断変形に付随する鉛直方向の変形，圧密係数cvの圧密圧力依存性を取り上げ，cvが大きく異なる泥炭地盤上の二つの試験盛土を対象に一次元・二次元水～土連成微小／有限変形弾塑性FEM解析を実施し，上記要因の影響を調べている。また，圧密圧力によるcvの低下度合いを変化させた一連の一次元解析を行い，その圧密沈下挙動を検討した。以上の成果に基づき，地盤設計実務では泥炭式と呼ばれる実務経験式およびTerzaghi理論による慣用沈下予測式の適用性と適用にあたっての留意点を明らかにしている。","PeriodicalId":246019,"journal":{"name":"Jiban Kogaku Janaru (japanese Geotechnical Journal)","volume":"46 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":"115777682","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 investigation on the surface temperature distribution characteristics of asphalt concretes having detached layers","authors":"K. Hayano, J. Mizukami, Tetsuo Suzuki","doi":"10.3208/JGS.2.1","DOIUrl":"https://doi.org/10.3208/JGS.2.1","url":null,"abstract":"空港アスファルト舗装の層間剥離の探査手法として，夜間の限られた時間で広い面積が調査できる必要があることから，赤外線カメラを用いた非破壊試験に注目した。本研究では空港アスファルト舗装の層間剥離を模擬したアスファルト混合物層の実物大供試体を作製し，環境室内にセットして昼夜の変化を再現して，赤外線カメラで夜間帯の供試体表面温度分布を測定した。得られた表面温度および内部温度の分布特性から，赤外線カメラで探査しやすい層間剥離の形態や調査に望ましい舗装環境について考察を行った。","PeriodicalId":246019,"journal":{"name":"Jiban Kogaku Janaru (japanese Geotechnical Journal)","volume":"129 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":"125223688","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. Okuda, T. Tsuchida, Y. Watabe, K. Ueno, T. Kaneko, Hiroki Murakami
{"title":"Proposal of cutoff seawalls in coastal areas required high safety against the strong earthquake: - Experimental and numerical studies against the level 2 class strong earthquake -@@@－レベル２地震を想定した模型実験と数値解析－","authors":"K. Okuda, T. Tsuchida, Y. Watabe, K. Ueno, T. Kaneko, Hiroki Murakami","doi":"10.3208/JGS.10.343","DOIUrl":"https://doi.org/10.3208/JGS.10.343","url":null,"abstract":"","PeriodicalId":246019,"journal":{"name":"Jiban Kogaku Janaru (japanese Geotechnical Journal)","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":"131884614","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}
Hiroki Murakami, T. Tsuchida, Taiki Abe, Yuichi Tanaka, K. Ueno
{"title":"Study on mixture of marine clay with bentonite used for cutoff of coastal disposal facility for wastes containing radioactive cesium","authors":"Hiroki Murakami, T. Tsuchida, Taiki Abe, Yuichi Tanaka, K. Ueno","doi":"10.3208/JGS.10.17","DOIUrl":"https://doi.org/10.3208/JGS.10.17","url":null,"abstract":"","PeriodicalId":246019,"journal":{"name":"Jiban Kogaku Janaru (japanese Geotechnical Journal)","volume":"23 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":"133286149","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":"New approach for pumped water models and well loss euation for groundwater area control","authors":"H. Okuno, S. Koyama","doi":"10.3208/JGS.6.27","DOIUrl":"https://doi.org/10.3208/JGS.6.27","url":null,"abstract":"全国井戸台帳によると,深井戸は帯水層の地質構成に基づき，多層スクリーンを有する不完全貫入井戸が多い。この点は，水資源としての地下水の有効利用だけではなく，水環境の保全にとっても重大な問題である。したがって，一般に井戸設計では，施工コスト面を踏まえて，できる限り正確に計画揚水量を算定する必要がある。しかしながら，不完全貫入井戸の場合，水理定数の算定や揚水管理に関して井戸理論を正確に適用し難く，不適切な設計揚水量を導くこともあり，結果的に不正確な設計揚水量を算出することによって過剰揚水による井戸の枯渇の助長や地下水位の低下による地盤沈下の被害も多くなっている。本研究においては，安全な設計揚水量を導くために，プレボーリングによる帯水層の水理学的な地質特性，段階揚水試験及び定常説を用いて実用的な井戸損失式を提案して本式の有効性について考察した。すなわち，非定常説に基づくJacob法と対比される新しい揚水モデルによる井戸損失式を提案し，地下水盆を構成する地質が異なる地域や任意の井戸構造においても，同一の井戸損失式によって地下水管理が可能であることを実証的に明らかにした。","PeriodicalId":246019,"journal":{"name":"Jiban Kogaku Janaru (japanese Geotechnical Journal)","volume":"48 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":"133498022","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}
H. Muto, Takashi Kamiya, A. Naganuma, T. Kodaka, C. Ying, M. Nakano, T. Noda
A newly developed reinforced member incorporating both a bearing resistance and a friction resistance was confirmed the effectiveness using a prototype reinforced earth wall. The axial forces of the reinforcement members installed in the prototype reinforced earth wall were measured through a construction experiment and a field measurement. As a result, the measured axis forces of the reinforcement members increased during the construction of the reinforced earth wall. Then, the most of the axis forces of the reinforcement members were kept constant after the construction. The resistances by both the friction plate and the bearing plate occurred from the early stage of the construction, and then converged at the final stage of the construction. The measured friction resistance was greater than that of the bearing resistance at the upper part of the reinforced earth wall. On the other hand, the contribution ratio of the friction resistance decreased with increasing the overburden pressure, and converged to about 40 %.
{"title":"Construction Experiment of Reinforced Soil Wall Using Reinforcement Member Incorporating Both Friction Resistance and Bearing Resistance","authors":"H. Muto, Takashi Kamiya, A. Naganuma, T. Kodaka, C. Ying, M. Nakano, T. Noda","doi":"10.3208/JGS.12.33","DOIUrl":"https://doi.org/10.3208/JGS.12.33","url":null,"abstract":"A newly developed reinforced member incorporating both a bearing resistance and a friction resistance was confirmed the effectiveness using a prototype reinforced earth wall. The axial forces of the reinforcement members installed in the prototype reinforced earth wall were measured through a construction experiment and a field measurement. As a result, the measured axis forces of the reinforcement members increased during the construction of the reinforced earth wall. Then, the most of the axis forces of the reinforcement members were kept constant after the construction. The resistances by both the friction plate and the bearing plate occurred from the early stage of the construction, and then converged at the final stage of the construction. The measured friction resistance was greater than that of the bearing resistance at the upper part of the reinforced earth wall. On the other hand, the contribution ratio of the friction resistance decreased with increasing the overburden pressure, and converged to about 40 %.","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":"121587029","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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