| Project/Area Number |
09650540
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Geotechnical engineering
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| Research Institution | HOKKAIDO UNIVERSITY (1998-1999)
Muroran Institute of Technology (1997) |
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Principal Investigator |
MIURA Seiichi Hokkaido Univ., Grad. School of Eng., Pro., 大学院・工学研究科, 教授 (00091504)
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| Co-Investigator(Kenkyū-buntansha) |
KAWAMURA Shima Muroran Insti. Of Tech. Faculty of Eng., Inst., 工学部, 助手 (90258707)
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| Project Period (FY) |
1997 – 1999
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| Project Status |
Completed (Fiscal Year 1999)
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| Budget Amount *help |
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 1999: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1998: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1997: ¥2,400,000 (Direct Cost: ¥2,400,000)
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| Keywords | Granular Materials / Volcanic coarse-grained soil / Model Experiment / Particle Breakage / In-Situ Test / Liquefaction / Earthquake / Dama e of Ground / 変形-強度特性 |
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| Research Abstract |
A series of laboratory tests on the undisturbed and disturbed samples taken from volcanic coarse-grained grounds were carried out to obtain the mechanical properties such as cyclic undrained triaxial strength, pseudo elastic shear modulus, dampimg ratio and shear-induced particle crushing In addition to these laboratory tests, site investigations were also conducted at the naturally deposited volcanic grounds, using SPT, CPT, Dilatometer test, Seismic Cone Test and PS logging. The following conclusions were obtained; (1) Amount of particle breakage induced by consolidation and shearing in arbitrary stress paths can be estimated easily by effective stress ratio and effective mean principal stress. (2) Variation in cyclic deformation-strength behaviors due to stress history was observed more clearly in the volcanic soils with which particle breakage has been significantly induced. (3) Effects of particle breakage, cementation and sedimentary environment on the correlation between the sounding data and deformation-strength parameters evaluated from laboratory tests are revealed.
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