1986 Fiscal Year Final Research Report Summary
Development of Stress-Strain Equation of Unsaturated Soil
| Project/Area Number |
60550353
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
基礎・土質工学
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| Research Institution | Kobe University |
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Principal Investigator |
KARUBE/DAIZO Associate Professor, Faculty of Engineering, Kobe University, 工学部, 助教授 (70031078)
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| Co-Investigator(Kenkyū-buntansha) |
TANAKA Yasuo Research Associate, Faculty of %engineering, Kobe University, 工学部, 助手 (40144597)
TANIMOTO Kiichi Professor, Faculty of %engineering, Kobe University, 工学部, 教授 (80031037)
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| Project Period (FY) |
1985 – 1986
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| Keywords | Unsaturated soil / SuctionEffective stress / Constitutive equation / Triaxial compression test / Tensiometer / Capillary zone / 毛管領域 / ストレスプローブ試験 |
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| Research Abstract |
Main aim of the project is to develop stress-strain equations of unsaturated soil in termes of suction and (<sigma>-u_a), where 0 is total normal stress and ua is pore air pressure. As few preceding experimental works were ayailable for refering to this developing work, triaxial compression test controlling both suction and (<sigma>-u_a) were performed on compacted kaolin by newly constructed automatically controlled apparatus.
The constitutive equations were developed based on Original %cam-Clay Model, which were proved by stress probe test.
A preliminary test on measuring suction by new type tensiometer in model ground in which water table was set at arbitrary level. It was confirmed that tensiometer could be applied to measure suction in capillary zone of ground, however, for measuring higher suction psychrometer should be used.
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