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Doboku Gakkai Ronbunshuu C最新文献

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A MODEL FOR UNDRAINED CYCLIC SHEAR DEFORMATION BASED ON THE EFFECTIVE STRESS PATH AND THE ACCUMULATIVE SHEAR WORK 基于有效应力路径和累积剪切功的不排水循环剪切变形模型
Doboku Gakkai Ronbunshuu C Pub Date : 1900-01-01 DOI: 10.2208/JSCEJC.64.157
A. Sakai
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引用次数: 0
GEOTECHNICAL ISSUES AND APPROACH ON KANSAI INTERNATIONAL AIRPORT PROJECT 关西国际机场工程土工问题及对策
Doboku Gakkai Ronbunshuu C Pub Date : 1900-01-01 DOI: 10.2208/JSCEJC.65.998
T. Furudoi, Masaki Kobayashi
{"title":"GEOTECHNICAL ISSUES AND APPROACH ON KANSAI INTERNATIONAL AIRPORT PROJECT","authors":"T. Furudoi, Masaki Kobayashi","doi":"10.2208/JSCEJC.65.998","DOIUrl":"https://doi.org/10.2208/JSCEJC.65.998","url":null,"abstract":"関西国際空港は大阪湾南東部の泉州沖に，世界初の本格的な海上空港として建設された．建設予定地は水深が大きく，海底下には軟弱な沖積粘土層が20m以上堆積し，その下には数百mにわたって洪積粘土層が堆積している．したがって当初から沖積粘土層に対する地盤改良の実施や，洪積粘土層の圧密沈下が生じる深度方向の範囲やその大きさを見通すことが重要な課題であった．そのため事前に大深度のボーリング調査を行うなど，地盤工学的問題への対応に取り組んできた．本文は，関西国際空港の建設にかかる事前の調査や，事前予測に対する沈下の実態を記しつつ，沈下予測手法の変遷および現場における地盤挙動への対応について述べるものである．","PeriodicalId":131805,"journal":{"name":"Doboku Gakkai Ronbunshuu C","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":"129442977","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: 4
CHARACTERIZATION OF VERTICAL BEARING CAPACITY OF SHEET-PILES 板桩竖向承载力表征
Doboku Gakkai Ronbunshuu C Pub Date : 1900-01-01 DOI: 10.2208/JSCEJC.63.285
S. Taenaka, J. Otani, Takahiro Sato
{"title":"CHARACTERIZATION OF VERTICAL BEARING CAPACITY OF SHEET-PILES","authors":"S. Taenaka, J. Otani, Takahiro Sato","doi":"10.2208/JSCEJC.63.285","DOIUrl":"https://doi.org/10.2208/JSCEJC.63.285","url":null,"abstract":"","PeriodicalId":131805,"journal":{"name":"Doboku Gakkai Ronbunshuu C","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":"129687282","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
LIQUEFACTION MECHANISM OF UNSATURATED VOLOCANIC SANDY SOILS 非饱和火山砂质土液化机理研究
Doboku Gakkai Ronbunshuu C Pub Date : 1900-01-01 DOI: 10.2208/JSCEJC.62.546
M. Kazama, H. Takamura, T. Unno, Noriaki Sento, R. Uzuoka
{"title":"LIQUEFACTION MECHANISM OF UNSATURATED VOLOCANIC SANDY SOILS","authors":"M. Kazama, H. Takamura, T. Unno, Noriaki Sento, R. Uzuoka","doi":"10.2208/JSCEJC.62.546","DOIUrl":"https://doi.org/10.2208/JSCEJC.62.546","url":null,"abstract":"火山灰質砂質土で構成された斜面や盛土が，泥流状に崩壊する地震時地盤災害が発生している．本研究では，不飽和の火山灰質砂質土を対象として，同じ乾燥密度で異なる初期水分状態を持つ供試体に対し，間隙空気圧，間隙水圧，供試体体積変化を計測した非排気非排水条件下での繰返しせん断試験を行っている．その結果，緩い火山灰質砂質土は，飽和度が75％程度であっても，繰返しせん断によってサクションが低下すると同時に初期の有効応力を失い，いわゆる液状化状態になることを示した．また，実験結果を基に，不飽和土の液状化機構について考察し，不飽和土が繰返しせん断によって有効応力が失われるか否かは，土の間隙比と飽和度から決まる空気体積と土粒子骨格間隙の体積圧縮可能量に依存することを示した．","PeriodicalId":131805,"journal":{"name":"Doboku Gakkai Ronbunshuu C","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":"129381642","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: 23
VALIDATION STUDY ON RELATIONSHIPS AMONG FRACTURE ROCK MASS DATA BASED ON PROBABILITY AND STATISTICAL METHODS BY NUMERICAL MODEL 基于概率和统计方法的裂隙岩体数据间关系的数值模型验证研究
Doboku Gakkai Ronbunshuu C Pub Date : 1900-01-01 DOI: 10.2208/JSCEJC.65.185
Shunichi Suzuki, T. Motoshima, Y. Ijiri, H. Aoki
{"title":"VALIDATION STUDY ON RELATIONSHIPS AMONG FRACTURE ROCK MASS DATA BASED ON PROBABILITY AND STATISTICAL METHODS BY NUMERICAL MODEL","authors":"Shunichi Suzuki, T. Motoshima, Y. Ijiri, H. Aoki","doi":"10.2208/JSCEJC.65.185","DOIUrl":"https://doi.org/10.2208/JSCEJC.65.185","url":null,"abstract":"岩盤中の亀裂や断層といった不連続面の分布特性，形状及び透水性などの物理的特性は，一般的に亀裂性岩盤の力学的特性及び水理学的特性を支配している．本検討では亀裂を有する岩盤をモデル化する手法であるDFNモデルを対象に，原位置で取得可能な各亀裂特性とそれらの相互関係に着目し，DFNモデルを作成するための各亀裂特性の相互関係を確率統計理論に基づいて整理した．さらに，この相互関係の妥当性を検証するために，当該相互関係を用いて作成したDFNモデル中に仮想のボーリング孔を掘削して亀裂頻度を観測し，後述する亀裂頻度の理論式から予測される亀裂頻度の理論統計値との比較検証を実施した．","PeriodicalId":131805,"journal":{"name":"Doboku Gakkai Ronbunshuu C","volume":"106 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":"127065943","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
CHANGES IN MECHANICAL PROPERTIES AND DEFORMATION BEHAVIORS OF ROCKS DUE TO FREEZING OF PORE WATER 孔隙水冻结对岩石力学性能和变形行为的影响
Doboku Gakkai Ronbunshuu C Pub Date : 1900-01-01 DOI: 10.2208/JSCEJC.63.24
Nariaki Kodama, Y. Fujii, S. Akagawa, Y. Ishijima
{"title":"CHANGES IN MECHANICAL PROPERTIES AND DEFORMATION BEHAVIORS OF ROCKS DUE TO FREEZING OF PORE WATER","authors":"Nariaki Kodama, Y. Fujii, S. Akagawa, Y. Ishijima","doi":"10.2208/JSCEJC.63.24","DOIUrl":"https://doi.org/10.2208/JSCEJC.63.24","url":null,"abstract":"氷点下における間隙水の挙動に着目し，数種の岩石について，氷点下を含む温度範囲で実施した一軸圧縮・圧裂引張試験，凍結融解試験，凍上試験でみられた力学的特性の変化や変形挙動を分析した．稲田花崗岩を除く3種の堆積岩での強度増加，凝灰岩における間隙氷生成時の不凍水圧上昇に起因する破砕，白浜砂岩および幌延珪藻質泥岩の氷晶分離凍結に伴う破断とアイスレンズの生成に伴う凍上などが確認された．また，常温と比較した氷点下での強度増加割合と，比表面積・不凍水含有率との間に相関関係があることを見出すと共に，凍結に伴う強度増加のメカニズムについて考察した．","PeriodicalId":131805,"journal":{"name":"Doboku Gakkai Ronbunshuu C","volume":"17 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":"127326048","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: 7
THE STRENGTH AND DEFORMATION PROPERTIES OF COARSE-GRAINED MATERIALS FROM CYCLIC AND MONOTONIC LOADING TRIAXIAL COMPRESSION TESTS UNDER VARIOUS CONDITIONS 从各种条件下的循环和单调加载三轴压缩试验得出的粗颗粒材料的强度和变形特性
Doboku Gakkai Ronbunshuu C Pub Date : 1900-01-01 DOI: 10.2208/JSCEJC.64.209
Tomoko Sasaki, T. Shimamine, Shin-ichiro Nozawa, M. Kimura, H. Hasegawa, F. Tatsuoka, D. Hirakawa
{"title":"THE STRENGTH AND DEFORMATION PROPERTIES OF COARSE-GRAINED MATERIALS FROM CYCLIC AND MONOTONIC LOADING TRIAXIAL COMPRESSION TESTS UNDER VARIOUS CONDITIONS","authors":"Tomoko Sasaki, T. Shimamine, Shin-ichiro Nozawa, M. Kimura, H. Hasegawa, F. Tatsuoka, D. Hirakawa","doi":"10.2208/JSCEJC.64.209","DOIUrl":"https://doi.org/10.2208/JSCEJC.64.209","url":null,"abstract":"To analyse the seismic behaviour of a fill dam that was actually damaged during a recent earthquake, a series of triaxial tests were performed on gravel including fines retrieved from the site. To understand different performances of the downstream and upstream slopes of the rock shell, saturated specimens were subjected to monotonic and cyclic loading histories under undrained conditions, while specimens that were moist as in the field under drained conditions. With undrained saturated specimens and drained moist specimens, the effects of cyclic loading conditions on the peak strength when subsequently subjected to monotonic loading were evaluated. In all the test conditions, the effects of compacted dry density on the strength and deformation properties were evaluated. The following was found. The residual strain by cyclic loading is much larger with the undrained saturated specimens than with the drained moist specimens. The increase in the strength with an increase in the compacted dry density is significant in both cases. The effects of cyclic loading on the subsequent compressive strength are negligible with drained moist specimens, while the strength may decrease significantly by cyclic loading with undrained saturated loose specimens.","PeriodicalId":131805,"journal":{"name":"Doboku Gakkai Ronbunshuu C","volume":"95 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":"129929887","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
MODELING HYDRAULIC CONDUCTIVITY AND SWELLING PRESSURE OF SEVERAL COMPACTED BENTONITES AFFECTED BY SALINITY OF WATER 模拟几种压实膨润土的导电性和膨胀压力受水盐度的影响
Doboku Gakkai Ronbunshuu C Pub Date : 1900-01-01 DOI: 10.2208/JSCEJC.65.66
Yukihisa Tanaka, T. Hasegawa, Kunihiko Nakamura
{"title":"MODELING HYDRAULIC CONDUCTIVITY AND SWELLING PRESSURE OF SEVERAL COMPACTED BENTONITES AFFECTED BY SALINITY OF WATER","authors":"Yukihisa Tanaka, T. Hasegawa, Kunihiko Nakamura","doi":"10.2208/JSCEJC.65.66","DOIUrl":"https://doi.org/10.2208/JSCEJC.65.66","url":null,"abstract":"高レベル放射性廃棄物処分施設の立地地点が沿岸に近い場合には，地下水に海水を起源とする塩分が含まれている可能性がある．このため，海水が各種ベントナイトの透水性に及ぼす影響を把握する必要がある．そこで，本研究においては，各種ベントナイトに対する各種濃度の人工海水を用いた場合の透水係数ならびに膨潤圧を表現し得るモデルを提案した．このモデルでは，人工海水の濃度変化によるベントナイトの特性の変化がモンモリロナイト結晶の凝集と間隙水の粘性の変化により表現されている．さらに，既往の実験結果との比較を行い，海水を含む地下水環境下でのベントナイトの透水係数および膨潤圧を妥当に評価できることを示した．","PeriodicalId":131805,"journal":{"name":"Doboku Gakkai Ronbunshuu C","volume":"5 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":"130593118","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
EVALUATION OF THE LOADING SURFACE OF GRANULAR MEDIA BY MULTI-SCALE MODELING 基于多尺度模型的颗粒介质加载面评价
Doboku Gakkai Ronbunshuu C Pub Date : 1900-01-01 DOI: 10.2208/JSCEJC.62.667
K. Kaneko, S. Tsutsumi, Takayuki Takashima, K. Kumagai
{"title":"EVALUATION OF THE LOADING SURFACE OF GRANULAR MEDIA BY MULTI-SCALE MODELING","authors":"K. Kaneko, S. Tsutsumi, Takayuki Takashima, K. Kumagai","doi":"10.2208/JSCEJC.62.667","DOIUrl":"https://doi.org/10.2208/JSCEJC.62.667","url":null,"abstract":"均質化理論に基づくマルチスケールモデリングにおけるミクロスケール問題はマクロスケール問題に対する構成関係を与えると解釈される．本研究では，この解釈に基づき粒状体の3次元ミクロスケール解析を実施し，粒状体の巨視的な負荷面の評価を行った．まず，マルチスケールモデリングの概要について述べ，ミクロスケール問題がマクロスケール問題に対する構成関係を与えることを示した．次に，3次元ミクロスケール解析により負荷面および負荷面と関連のある流動則について評価・考察した．その結果，粒状材料の負荷面は角点を含む曲面となり移動・回転硬化を示すこと，角点付近では塑性ひずみ増分の増分非線形性が現れること，π平面においては塑性ひずみ増分の増分非線形性が顕著なため負荷面を一意的に定めることが困難であること等の知見を得た．","PeriodicalId":131805,"journal":{"name":"Doboku Gakkai Ronbunshuu C","volume":"4 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":"131937620","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
IN-SITU CONSOLIDATION BEHAVIOR OF PLEISTOCENE CLAY BELOW SEABED AT KOBE AIRPORT 神户机场海底下更新世粘土的原位固结行为
Doboku Gakkai Ronbunshuu C Pub Date : 1900-01-01 DOI: 10.2208/JSCEJC.62.780
Noritaka Hasegawa, T. Matsui, Yasuo Tanaka, Yoshiki Takahashi, M. Nambu
{"title":"IN-SITU CONSOLIDATION BEHAVIOR OF PLEISTOCENE CLAY BELOW SEABED AT KOBE AIRPORT","authors":"Noritaka Hasegawa, T. Matsui, Yasuo Tanaka, Yoshiki Takahashi, M. Nambu","doi":"10.2208/JSCEJC.62.780","DOIUrl":"https://doi.org/10.2208/JSCEJC.62.780","url":null,"abstract":"","PeriodicalId":131805,"journal":{"name":"Doboku Gakkai Ronbunshuu C","volume":" 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131977062","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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