2004 Fiscal Year Final Research Report Summary
Research on 1 International Standardization of Geotechnical Investigation Method by Considering Locality of Natural Ground
| Project/Area Number |
15404012
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 海外学術 |
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| Research Field |
Geotechnical engineering
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| Research Institution | Kobe University (2004)
Hokkaido University (2003) |
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Principal Investigator |
SHIBUYA Satoru Kobe Univ., Civil Engineering, Professor, 工学部, 教授 (00206153)
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| Co-Investigator(Kenkyū-buntansha) |
WATABE Yoichi Port and Airport Research Institute, Chief, 研究室長
YAMASHITA Satoshi Kitami Institute of Technology, Civil Engineering, Associate Prof., 工学部, 助教授 (00174673)
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| Project Period (FY) |
2003 – 2004
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| Keywords | Italy / Geotehnical Investigation / Cultural heritage / Pisa tower / Elastic wave survery / International standardization / Sampling / Settlement |
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| Research Abstract |
In this report, some details regarding in-situ/lab measurements of wave velocity, together with their comparisons are outlined, bearing the above-mentioned 'trinitarianism' in mind. Application of in-situ seismic tests in understanding engineering properties of various geomaterials is discussed. Lastly, two case histories, each demonstrating the importance of in-situ seismic survey in geotechnical site investigation scheme are described in detail.
Quasi-elastic stiffness (QES) in shear behaviour of geomaterials is discussed. Recent developments in measurement of QES of natural ground by a means of in-situ seismic survey, together with comparable measurement of elastic wave velocities in the laboratory are outlined. Application of combined in-situ/lab measurements is discussed with reference to the interlink between QES and strengths, the quality of laboratory sample and the in-situ 'structure' of natural sedimentary clay. Two case records, each demonstrating the importance of in-situ seismic survey are described : these are i)prediction of soft clay ground deformation associated with deep excavation in Bangkok Metro project, and ii)geotechnical site investigation performed at leaning tower of Pisa in September 2003.
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