Statistical analyses of inherent variability of soil strength and effects on engineering geology design
| Autor: | Vincenzo Simeone, Angelo Doglioni, Annalisa Galeandro |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Engineering
Inherent soil variability 0211 other engineering and technologies Probability density function Soil science 02 engineering and technology characteristic values Deposition (geology) law.invention statistical analysis law Geotechnical engineering Anisotropy 021101 geological & geomatics engineering 021110 strategic defence & security studies Data processing business.industry Engineering geology Geology pocket penetrometer strength Geotechnical Engineering and Engineering Geology Penetrometer Diagenesis Data point business |
| Zdroj: | Bulletin of Engineering Geology and the Environment. 76:587-600 |
| ISSN: | 1435-9537 1435-9529 |
| Popis: | Clayey soil strata, as all natural deposits, generally show variability in the values of their geotechnical properties. This is due mainly to geological and environmental processes such as deposition and diagenesis, which introduce heterogeneity, anisotropy and variability to soil properties. Other causes of variability, and thus uncertainty, are the representativeness of samples and errors related to testing procedure, measurement and data processing procedures. To improve our knowledge about the inherent variability in the geomechanical properties of clays, this work presents a case study related to the analysis of the strength variability along a log of marine stiff clay deposits, which are apparently quite homogeneous. The analysis was based on pocket penetrometer strength measurement, performed both punctually and across the whole deposit. The adopted testing procedure, which is fast and reliable, provides a really wide dataset of the investigated soil property, with more than 800 data points. These allow for detailed variability analysis, and a reliable estimation of the coefficient of variation as well as research into the best fitting probability density functions, which are key factors for robust design. The presented case study allows discussion of the inherent variability of soil properties, and its influence on the characteristic values of soil strength in geotechnical design. |
| Databáze: | OpenAIRE |
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