Correlações entre resultados de ensaios SPT e CPT para solo arenoso sedimentar
The standard penetration test (SPT) is the most commonly used in situ test for obtaining the required geotechnical parameters for foundation analysis and design in Brazil. Since in most situations only SPT data is available, the search for new SPT-CPT correlations is necessary. However, most of the...
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| Formato: | Dissertação |
| Idioma: | por |
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Brasil
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| Endereço do item: | https://repositorio.ufrn.br/jspui/handle/123456789/22135 |
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| Resumo: | The standard penetration test (SPT) is the most commonly used in situ test for obtaining the required geotechnical parameters for foundation analysis and design in Brazil. Since in most situations only SPT data is available, the search for new SPT-CPT correlations is necessary. However, most of the available SPT-CPT correlations in Brazil have been established for soils of southern regions of the country. New local correlations for other soil types are therefore necessary. This study aims at determining correlations between the SPT resistance number (NSPT), and the CPT tip resistance (qc) and sleeve friction resistance (fs) for a silty sand deposit at the city of Natal, at the Northeast coast of Brazil. Using linear fittings and a simplified geostatistic approach, correlations were obtained for 88 SPT boreholes and eight CPT boreholes. The NSPT blowcount values where corrected for the energy of 60%. SPT-CPT correlations were devised using the following approaches: variogram analysis, inverse distance weighting (IDW) and ordinary kriging. |
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