Ara es mostren els items 38-57 de 75

    • Landslide motion assessment including rate effects and thermal interactions: revisiting the Canelles landslide 

      Alvarado Bueno, Mauricio; Pinyol Puigmartí, Núria Mercè; Alonso Pérez de Agreda, Eduardo (2019-09)
      Article
      Accés obert
      The re-activation of a large (40 Mm3) landslide on the valley slopes of a reservoir motivated a research initiative to estimate the risk of a fast-sliding mass moving into the reservoir. A previous simplified analysis had ...
    • Landslides in reservoirs and dam operation 

      Alonso Pérez de Agreda, Eduardo; Pinyol Puigmartí, Núria Mercè (CRC Press, 2011)
      Capítol de llibre
      Accés restringit per política de l'editorial
      Risk of landslide ocurrence in reservoirs is enhanced by the submergence of the slope toe and by rapid drawdown conditions. Instabilities may endanger the dam itself. They may also lead to strong wave motion in the reservoir ...
    • Landslides in reservoirs: a coupled thermo-hydromechanical approach 

      Pinyol Puigmartí, Núria Mercè (Universitat Politècnica de Catalunya, 2010-09-13)
      Tesi
      Accés obert
      La ocurrencia de deslizamientos es uno de los principales problemas presentes durante el diseño, construcción y explotación de presas y embalses. La inundación del pie de los taludes, así como el desembalse rápido, pueden ...
    • Lechago dam. A case study 

      Alonso Pérez de Agreda, Eduardo; Olivella Pastallé, Sebastià; Pinyol Puigmartí, Núria Mercè (Universitat Politècnica de Catalunya. Escola Tècnica Superior d'Enginyers de Camins Canals i Ports de Barcelona, 2011-11-15)
      Comunicació de congrés
      Accés obert
      Lechago dam (Teruel, Spain) is a 40 m high zoned earth and rockfill dam sitting on soft continental deltaic deposits. A relatively narrow central clay core is stabilized by wide rockfill shoulders. The dam was well ...
    • Lechago dam: a case study 

      Alonso Pérez de Agreda, Eduardo; Olivella Pastallé, Sebastià; Pinyol Puigmartí, Núria Mercè (2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Lechago dam (Teruel, Spain) is a 40 m high zoned earth and rockfill dam founded on soft continental deltaic deposits. A relatively narrow central clay core is stabilized by wide rockfill shoulders. The dam was completed ...
    • Liquefaction-induced flow-like landslides: the case of Valarties (Spain) 

      Carluccio, Gaia di; Pinyol Puigmartí, Núria Mercè; Alonso Pérez de Agreda, Eduardo; Hurlimann Ziegler, Marcel (2023-01)
      Article
      Accés obert
      This paper examines a flowslide involving a glacial deposit of low-plasticity silty sand triggered by a karstic spring after a rainfall period. The work aims at explaining the triggering, propagation and kinematics of ...
    • 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 obert
      Short 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 obert
      The 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 obert
      Los 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'editorial
      Mechanical 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'editorial
      Frictional 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 obert
      Applications 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'editorial
      In 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'editorial
      Rain 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 obert
      Over 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 obert
      The 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 obert
      Este 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 obert
      In 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 obert
      Flow-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, ...