Evaluación de la estabilidad de un talud de carretera por análisis numérico

Publicado

2017-01-01

Evaluation of the stability of a highway slope through numerical modeling

Evaluación de la estabilidad de un talud de carretera por análisis numérico

Palabras clave:

slope stability, numerical modeling, probabilistic analysis (en)
estabilidad de talud, análisis numérico, análisis probabilístico (es)

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Autores/as

Gabriel Steluti Marques State University of Maringa https://orcid.org/0000-0002-6713-2425
Juliana Azoia Lukiantchuki State University of Maringa https://orcid.org/0000-0001-9080-2936

Resumen (en)
Resumen (es)

Mass movement in natural slopes can cause great material and human loss for society. In this context, stability analyses become quite complex since there are a large number of uncertainties involved in the interpretation of the problem. This paper presents an analysis of the stability of a highway slope, located near the city of Guarulhos, in São Paulo, Brazil. The shear strength parameters of the soil and the stratigraphic profile were defined based on the results of Standard Penetration Tests (SPT). The initial factor of safety was below the minimum value recommended by the Brazilian technical standards, but did not indicate imminent failure. However, additional analyses which incorporated the influence of critical periods of rain and probabilistic analysis indicated that the stability of the section was unsatisfactory. Therefore, numerical modeling is shown to be a complex and effective tool for implementation of conventional analyses of slope stability.

Los movimientos de masas en taludes naturales pueden causar grandes pérdidas humanas y materiales para una sociedad. En este contexto, el análisis de estabilidad se convierte en un problema muy complejo ya que hay un gran número de incertidumbres implicadas en la interpretación. En este artículo se presenta el análisis de la estabilidad de un talud de carretera, situado en Guarulhos, São Paulo, Brasil. Los parámetros de resistencia al corte y el perfil estratigráfico del suelo se obtuvieron con base en los resultados de ensayos de penetración estándar (SPT). El factor de seguridad inicial era inferior al valor mínimo recomendado por las normas técnicas brasileñas, pero sin indicar la ruptura inminente. Sin embargo, un análisis más detallado teniendo en cuenta la influencia de los períodos críticos de la lluvia y el análisis probabilístico indicó que la estabilidad de una sección no era satisfactoria. Por lo tanto, el análisis numérico resultó una herramienta compleja y eficaz para la aplicación de análisis de estabilidad de taludes convencionales.

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Citas

Montoya, C.H.A.T., Uncertainty, vulnerability and landslides risk evaluation in roadways, Ph.D. Dissertation, Department of Civil Engineering, University of Brasilia, Brasilia, Brazil, 2013.

Hidalgo, C. and Assis, A., Quantitative risk evaluation by landslides triggered by rainfall in northwestern Colombia road, Proceedings of XII Pan-American Conference on Soil Mechanics and Geotechnical Engineering, Toronto, Canada, 2011.

Jesus, A.C., Back analysis the landslides in residual soils unsaturated, MSc. Thesis, Department of Geotechnical Engineering, University of Sao Paulo, Sao Carlos, Brazil, 2008.

Griffiths, D.V. and Lane, P.A., Slope stability analysis by finite elements. Géotechnique, 49(3), pp. 387-403, 1999.

USACE, Risk-based analysis in geotechnical engineering for support of planning studies, U.S. Army Corps of Engineers. ETL 1110-2-556, 28 May 1999.

Christian, J.T., Ladd, C.C and Baecher, G.B., Reliability applied to slope stability. Journal of Geotechnical Engineering, 20, pp. 2180-2207, 1994.

Duncan, J.M., Factors of safety and reliability in geotechnical engineering. Journal of Geotechnical and Geoenvironmental Engineering, 26(4), pp. 307-316, 2000.

Baecher, G.B and Christian, J.T. Reliability and statistics in geotechnical engineering, England: John Willey 7 Sons, 2003.

Benarroch, A.B., Hernández, M.A. and Manzanilla, R., Evaluation of sensitivity of the geotechnical parameters in the analysis of slope stability, Proceedings of XII Pan-American Conference on Soil Mechanics and Geotechnical Engineering, Toronto, Canada, 2011.

Christian, J.T., Geotechnical engineering reliability: How well do we know. Journal of Geotechnical and Geoenvironmental Engineering, 130(10), pp. 985-1003, 2004.

Lukiantchuki, J., Interpretation of SPT test results based on dynamic instrumentation, PhD. dissertation, Department of Geotechnical Engineering, University of Sao Paulo, Sao Carlos, Brazil, 2012.

Teixeira, A.H., Desing and execution of foundations, Seminário de Engenharia de Fundações Especiais e Geotecnia, 3, Sao Paulo, Brazil, 2011.

Godoy, N.S., Foundations, Sao Carlos, Brazil, 1972.

Alonso, U.R. Foundations. Sao Paulo: Ed. Edgar Blucher Ltda, 1983.

Duncan, J.M. and Wrigth, S.G., Soil strength and slope stability, John Willey & Sons, INC, 2005.

Associação Brasileira de Normas Técnicas (ABNT), NBR 11682, Slope stability, Rio de Janeiro, Brazil, 34 P., 2009.

Aristizabal, E.F.G., Jerez, C.A.R. and Brand, M.A.B., Influence of rainfall intensity on infiltration and deformation of unsaturated soil sloples. DYNA, 78(170), pp. 116-124, 2011.

Fredlund, D.G. and Anqing, X., Equations for the soil-water characteristic cuves. Canadian Geotechnical Journal, 31, pp. 521-532, 1994.

USACE, Introduction to probability and reliability methods for use in geotechnical engineering, U.S. Army Corps of Engineers. ETL 1110-2- 547, 30 Sept. 1997.

Allahverdizadeh, P., Griffiths, D.V. and Fenton, G.A., Influence of different input distributions on probabilistic outcomes in geotechnical stability analysis, Proceedings of XVI European Conference of Soil Mechanics and Geotechnical Engineering, Endiburgh, Scotland, 2015.

Ribeiro, R.C.H., Aplications of probability and statistics in geotechnical analyses. PhD. Dissertation, Department of Civil Engineering, PUC University, Rio de Janeiro, Brazil, 2008.

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