GMAX of Fine-Grained Soils at Wide Void Ratio Range, Focusing on Time-Dependent Behavior (IS-YOKOHAMA 2000「沿岸域の地盤工学における理論と実際」特集号〔英文〕)
スポンサーリンク
概要
- 論文の詳細を見る
Effects of creep as well as initial water content at deposition on the pseudo-elastic shear modulus, G_<max>, of finegrained soil are studied in a consolidometer equipped with bender elements. The state boundary (SB) concept is discussed in void ratio (e)-G_<max>-Effective Vertical Stress (σ'_v) space and the condition of metastability associated with short-term creep and long-term natural creep are exemplified from laboratory creep tests and in-situ soil test results, respectively. In addition to the conventional laboratory reconstitution method adopted for almost all clay samples that use an initial water content of twice the liquid limit, the soil samples from Minato-Mirai (MM) site were also prepared by directly consolidating the slurry with a water content ranging from 1.5 to 5.0 times the liquid limit. The larger primary metastable region or higher degree of on-depositional structuration associated with the samples at higher initial void ratio is confirmed. However, no appreciable difference was found in the increase in G_<max> with time, represented by N_G, between the samples prepared by the two different methods. In addition to the highly plastic MM clay, the study of N_G also covered other clayey soils of different origin and plasticity index range from 29 to 78. Metastability index, MI (G_<max>)^e that manifested the aspect of structuration and destructuration reaches a maximum value at the end of sustained loading and vanishes slowly with any increase in stress level. By using liquidity index instead of void ratio in the e-log G_<max> plot, the metastability index, MI (G_<max>)^<LI>, is found to represent a wider variety of soils with minimum scatter. A slight stress level dependency of metastability increase was observed yielding smaller values at higher stresses. For the present test conditions and duration, subsequent stressing of 1.5-2.0 times the creep stress brought about the complete destructuration of the creep-added soil-structure formed in the previous creep step.
- 社団法人地盤工学会の論文
- 2001-10-15
著者
-
今井 五郎
Professor Ditto.
-
LOHANI TARANIDHI
Former Graduate Student, Department of Civil Engineering, Yokohama National University.
-
谷 和夫
Associate Professor, ditto.
-
澁谷 啓
Associate Professor, Graduate School of Engineering, Hokkaido University. Manuscript was received fo
-
谷 和夫
Associate Professor Ditto.
-
Tani Kazuo
Department Of Civil Engineering Yokohama National University
-
澁谷 啓
(present Address)graduate School Of Engineering Hokkaido University:imperial College Of Science Tech
-
Shibuya S
Graduate School Of Engineering Hokkaido University
-
澁谷 啓
Department Of Civil Engineering Hokkaido University
-
今井 五郎
Department Of Civil Engineering Yokohama National University
-
Lohani T
National Inst. Rural Engineering Jpn
-
Lohani Tara
Former Graduate Student, Department of Civil Engineering, Yokohama National University.
関連論文
- GMAX of Fine-Grained Soils at Wide Void Ratio Range, Focusing on Time-Dependent Behavior (IS-YOKOHAMA 2000「沿岸域の地盤工学における理論と実際」特集号〔英文〕)
- A CONSTITUTIVE EQUATION OF ONE-DIMENSIONAL CONSOLIDATION DERIVED FROM INTERCONNECTED TESTS
- A Constitutive Equation of One-Dimensional Consolidation Derived from Inter-Connected Tests(今井五郎,Y.-X.Tang著,本誌Vol.32,No.2,1992年6月掲載)
- EXPERIMENTAL STUDIES ON SEDIMENTATION MECHANISM AND SEDIMENT FORMATION OF CLAY MATERIALS
- 液状粘土の沈降特性
- EXPERIMENTAL STUDIES ON SEDIMENTATION MECHANISM AND SEDIMENT FORMATION OF CLAY MATERIALS
- SETTLING BEHAVIOR OF CLAY SUSPENSION
- DEVELOPMENT OF A NEW CONSOLIDATION TEST PROCEDURE USING SEEPAGE FORCE
- ディスカッション Extension of Spatially Mobilized Plane(SMP)to Frictional and Cohesive Materials and Its Application to Cemented Sands〔含 回答〕
- MODEL TESTS AND FEM SIMULATION OF SOME FACTORS AFFECTING THE BEARING CAPACITY OF A FOOTING ON SAND
- NUMERICAL SIMULATION OF BEARING CAPACITY CHARACTERISTICS OF STRIP FOOTING ON SAND
- ESTIMATE OF ELASTIC SHEAR MODULUS IN HOLOCENE SOIL DEPOSITS
- A CASE STUDY FOR CHARACTERIZING UNDRAINED CYCLIC DEFORMATION PROPERTIES IN YOUNG SAND DEPOSIT FROM IN-SITU AND LABORATORY TESTS
- ESTIMATE OF ELASTIC SHEAR MODULUS IN HOLOCENE SOIL DEPOSITS
- REFORMED CARMAN'S FILTRATION THEORY AND ITS APPLICATION TO FORCED WATER LOSS OF CLAYEY FLUID MUD
- ENDOCHRONlC MODELING FOR CYCLIC BEHAVIOR OF OVERCONSOLIDATED CLAYS
- AN ENDOCHRONIC CONSTITUTIVE LAW FOR STATIC SHEAR BEHAVIOR OF OVERCONSOLIDATED CLAYS
- 分割型圧密試験により求めた一次元圧密の普遍的構成式(『土質工学会論文報告集』Vol.32,No.2 (1992年6月発行)掲載論文の概要)
- A CONSTITUTIVE EQUATION OF ONE-DIMENSIONAL CONSOLIDATION DERIVED FROM INTER-CONNECTED TESTS
- BEARING CAPACITY OF CIRCULAR FOUNDATIONS ON SOFT CLAY OF STRENGTH INCREASING WITH DEPTH
- DEVELOPMENT OF CENTRIFUGE CONE PENETRATION TEST TO EVALUATE THE UNDRAINED SHEAR STRENGTH PROFILE OF A MODEL CLAY BED
- Cooperative Behavior of a Mechanically Unstable Mobile Robot for Object Transportation
- CASE STUDIES OF IN-SITU STRUCTURE OF NATURAL SEDIMENTARY CLAYS
- LOCAL BOUNDARY SURFACES OF A LOOSE SAND DEPENDENT ON CONSOLIDATION PATH
- FOUR-DIMENSIONAL LOCAL BOUNDARY SURFACES OF AN ISOTROPICALLY CONSOLIDATED LOOSE SAND
- ESTIMATING UNDRAINED SHEAR STRENGTH OF SOFT CLAY GROUND IMPROVED BY PRE-LOADING WITH PVD : CASE HISTORY IN BANGKOK
- ASSESSING STRUCTURE OF AGED NATURAL SEDIMENTARY CLAYS
- CORRELATIONS BETWEEN SHEAR WAVE VELOCITY AND CONE TIP RESISTANCE IN NATURAL CLAYS
- A BOUNDING SURFACE FOR GRANULAR MATERIALS
- Biped-type leg-wheeled robot
- SMALL STRAIN SHEAR MODULUS OF CLAY SEDIMENTATION IN A STATE OF NORMAL CONSOLIDATION