Utilize este identificador para referenciar este registo:
https://hdl.handle.net/10216/95257
Autor(es): | António Viana da Fonseca Sara Rios Silva Nuno Cruz |
Título: | Geotechnical characterization by in situ and lab tests to the back-analysis of a supported excavation in metro do porto |
Data de publicação: | 2010 |
Resumo: | This paper summarizes the geotechnical characterization conducted for the design and subsequent analysis of a strutted excavation in "Metro do Porto". This region is geologically dominated by heterogeneous weathered granite masses with deep residual soil profiles. Local saprolitic soils exhibit, by their nature, a particular behavior characterized by very sensitive and weak relic micro-structures, due to their specific genesis. This study has included the interpretation of a significant volume of in situ test results, triaxial tests over undisturbed samples and monitoring data, giving rise to specific correlations between testing and design parameters. Real time monitoring enabled a back-analysis by FEM of a well instrumented section of the strutted excavation, which was calibrated taking into account the derived correlations and the deformability behavior of this specific geotechnical ambient. This geomaterial, although revealing very high initial stiffness values (for very small strain ranges) has shown low stiffness values for "medium to high" strain levels, reflecting a singular strong non-linearity in the stress-strain behavior. Â(c) Springer Science+Business Media B.V. 2008. |
URI: | https://hdl.handle.net/10216/95257 |
Tipo de Documento: | Artigo em Revista Científica Internacional |
Condições de Acesso: | restrictedAccess |
Aparece nas coleções: | FEUP - Artigo em Revista Científica Internacional |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
68159.PDF Restricted Access | 884.89 kB | Adobe PDF | Request a copy from the Author(s) |
Todos os registos no repositório estão protegidos por leis de copyright, com todos os direitos reservados.