Exploració per autor "Pinyol Puigmartí, Núria Mercè"
Ara es mostren els items 44-63 de 75
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Massive, continuous and non-invasive surface measurement of degree of saturation by shortwave infrared images
Parera Morales, Ferran; Pinyol Puigmartí, Núria Mercè; Alonso Pérez de Agreda, Eduardo (2021-06)
Article
Accés obertShort wave infrared (SWIR) images provide an accurate procedure to measure the degree of saturation (Sr) of soils. Changes in Sr result in reflectance changes which were recorded by a special digital camera optimized for ... -
Mathematical modelling of slopes
Alonso Pérez de Agreda, Eduardo; Pinyol Puigmartí, Núria Mercè; Yerro Colom, Alba (Elsevier, 2014)
Article
Accés obertThe paper discusses first the effect of rainfall on the stability of slopes and it focusses on the role of permeability. Existing or induced discontinuities are shown to have a remarkable effect on the slope safety. Also, ... -
Mecanismos que controlan la velocidad de los deslizamientos
Pinyol Puigmartí, Núria Mercè; Scoppettuolo, M.E.; Alonso Pérez de Agreda, Eduardo (International Centre for Numerical Methods in Engineering (CIMNE), 2017)
Comunicació de congrés
Accés obertLos deslizamientos activos a menudo mantienen velocidades lentas o moderadas (del orden de mm/día o cm/día) durante un largo periodo de tiempo. Las variaciones de la velocidad están relacionadas con los cambios en las ... -
Modelling compacted soils
Pinyol Puigmartí, Núria Mercè; Alonso Pérez de Agreda, Eduardo (2011)
Text en actes de congrés
Accés restringit per política de l'editorialMechanical and hydraulic compacted soil properties for a given soil mineralogy are essentially controlled by the attained dry density, water content and microstructure. Basic compaction conditions (wet or dry of optimum, ... -
Modelling creeping and catastrophic failure of thermo-mechanically driven landslides
Zervos, Antonis; Alonso Pérez de Agreda, Eduardo; Pinyol Puigmartí, Núria Mercè (Springer, 2017)
Comunicació de congrés
Accés restringit per política de l'editorialFrictional heating of the slip zone is a possible explanation for why some catastrophic landslides moved so fast and so far. The transition from a creeping phase to catastrophic collapse governed by frictional heating is ... -
Modelling large deformation problems in unsaturated soils
Yerro Colom, Alba; Alonso Pérez de Agreda, Eduardo; Pinyol Puigmartí, Núria Mercè (E3S Web of Conferences, 2016)
Text en actes de congrés
Accés obertApplications of unsaturated soil mechanics often involve large deformations and displacements. This is the case of collapse behaviour of low density soils or the unrestrained swelling of expansive clays. Rain induced ... -
Modelling progressive failure with MPM
Yerro Colom, Alba; Alonso Pérez de Agreda, Eduardo; Pinyol Puigmartí, Núria Mercè (CRC Press Taylor & Francis Group, 2014)
Text en actes de congrés
Accés restringit per política de l'editorialIn this work, the progressive failure phenomenon is studied using the Material Point Method (MPM). MPM is categorized as a method in between the classical Finite Element Method (FEM) and the truly particle methods. It is ... -
Modelling the initiation and run-out of rainfall-induced slope instability
Yerro Colom, Alba; Alonso Pérez de Agreda, Eduardo; Pinyol Puigmartí, Núria Mercè (2016)
Text en actes de congrés
Accés restringit per política de l'editorialRain induced instabilities are a common geotechnical problem specially in partially saturated soils. A large number of steep, natural or cut slopes remain stable for a long time and then fail during heavy rainstorms or ... -
Modelling the response of Lechago earth and rockfill dam
Alonso Pérez de Agreda, Eduardo; Olivella Pastallé, Sebastià; Soriano, Antonio; Pinyol Puigmartí, Núria Mercè; Esteban, F. (2011-03)
Article
Accés restringit per política de l'editorial -
Novel analysis for large strains based on particle image velocimetry
Pinyol Puigmartí, Núria Mercè; Alvarado Bueno, Mauricio (2017-07)
Article
Accés obertOver the last few decades, the particle image velocimetry (PIV) technique has become an interesting tool used to measure displacements in the field of experimental mechanics. This paper presents a procedure to interpret ... -
Novel procedure to validate MPM results by means of PIV measurements
Pinyol Puigmartí, Núria Mercè; Alvarado Bueno, Mauricio; Parera Morales, Ferran; Yerro Colom, Alba (2017-02)
Article
Accés obertThe Particle Image Velocimetry is a powerful non-invasive technique to analyse displacements in experimental tests. Displacement increments elapsed between the capture of two digital images are commonly measured on points ... -
Nuevo método para la interpretación de imágenes digitales de inestabilidad mediante la técnica PIV.
Alvarado Bueno, Mauricio; Ruiz, Álvaro; Pinyol Puigmartí, Núria Mercè (International Centre for Numerical Methods in Engineering (CIMNE), 2017)
Text en actes de congrés
Accés obertEste artículo presenta una metodología que proporciona los desplazamientos acumulados, velocidad, aceleración y deformación de puntos asociados a partículas reales a partir de las medidas obtenidas mediante la técnica ... -
Numerical analysis of rapid drawdown: applications in real cases
Alonso Pérez de Agreda, Eduardo; Pinyol Puigmartí, Núria Mercè (2016-07)
Article
Accés obertIn this study, rapid drawdown scenarios were analyzed by means of numerical examples as well as modeling of real cases with in situ measurements. The aim of the study was to evaluate different approaches available for ... -
Numerical modelling of Val d’Arán landslide with Material Point Method
Carluccio, Gaia di; Pinyol Puigmartí, Núria Mercè; Perdices Cos, Pau; Hurlimann Ziegler, Marcel (CIMNE, 2019)
Text en actes de congrés
Accés obertFlow-like landslides in mountainous areas can cause extensive damages due to their high velocity and long run-out distance. This work presents a real case of landslide occurred on 11 May 2018 in Val d’Arán (Catalonia, ... -
Parámetros de diseño, métodos de cálculo y solicitaciones
Alonso Pérez de Agreda, Eduardo; Pinyol Puigmartí, Núria Mercè (2007)
Text en actes de congrés
Accés obertSe presenta una serie de roturas en las que fue posible comparar los ángulos de fricción derivados mediante análisis retrospectivo con los obtenidos en ensayos de laboratorio utilizando técnicas diferentes. Cuando el ... -
Rapid drawdown and landslides
Pinyol Puigmartí, Núria Mercè; Alonso Pérez de Agreda, Eduardo; Olivella Pastallé, Sebastià (CRC Press, 2012)
Text en actes de congrés
Accés restringit per política de l'editorialPredicting the pore pressure distribution in a slope after rapid drawdown conditions requires the solution of a coupled flow‐deformation analysis in a saturated‐unsaturated porous media. A fully coupled finite element code ... -
Rapid drawdown in embankment dams
Pinyol Puigmartí, Núria Mercè; Alonso Pérez de Agreda, Eduardo; Olivella Pastallé, Sebastià (CRC Press, 2012)
Capítol de llibre
Accés restringit per política de l'editorialThe calculation of pore water pressure distribution in a slope partially submerged and subjected to a drawdown is analyzed in this chapter. Drawdown phenomenon is a critical situation for the stability of slopes of earth ... -
Recent developments of the Material Point Method for the simulation of landslides
Alonso Pérez de Agreda, Eduardo; Yerro Colom, Alba; Pinyol Puigmartí, Núria Mercè (2015-09)
Article
Accés obertThe paper describes first the theoretical framework of a "single layer" three phase material. The formulation is general and particular cases are dry and fully saturated soils. The formulation and discretization of the ... -
Rotura de cajones bajo la acción del oleaje
Alonso Pérez de Agreda, Eduardo; Pinyol Puigmartí, Núria Mercè (2010)
Text en actes de congrés
Accés restringit per política de l'editorial -
Run-out of landslides in brittle soils
Yerro Colom, Alba; Alonso Pérez de Agreda, Eduardo; Pinyol Puigmartí, Núria Mercè (2016-03)
Article
Accés obertOne of the factors causing the acceleration of landslides is the loss of strength of the soil involved in the potential unstable mechanism. The travelled distance and the landslide velocity, a key factor in risk analysis, ...