Effects of soil types in estimating fines content for evaluating liquefaction strength |
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| Nozomu Yoshida, Kazue Wakamatsu |
- Abstract:
- Relationships between soil type names written in the borehole logging data and fines content are investigated based on a statistical analysis of the estimation of the liquefaction strength determined without conducting a grain size analysis. Approximately 7700 borehole logging data sets were collected in the Miyagi Prefecture including Sendai City, Japan and approximately 1500 of these were selected for grain size analysis. These include 4409 results of grain size analyses and there are a total of 392 soil names. Soils were classified into 17 major soil types (gravel to clay, fill, surface soil, etc.); fines content was found to scatter significantly and there were significant difference between the investigated data and the representative value used in practical applications. Then, further classification was made in terms of adjectives such as "sandy", "silty", "with sand", "with silt", etc., and the average fines contents and standard deviations were investigated. Significant variations were found in the fines content distribution between the soils, even within the same major classification. Finally, several case studies were carried out to show the effect of the soil type on the liquefaction resistance strength (FL value). This showed the importance of the grain size analysis because liquefaction strength is highly sensitive to the Fc value.
- Keywords:
- Liquefaction Strength, Fines Content, Grain Size Analysis
- Download:
- IMEKO-TC4-GEO-2016-10.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC4
- Event name:
- TC4 International Workshop on Metrology for Geotechnics 2016
- Title:
1st IMEKO TC4 International Workshop on Metrology for Geotechnics
- Place:
- Benevento, ITALY
- Time:
- 17 March 2016 - 18 March 2016