Now showing items 21-40 of 80

    • Efecto de la velocidad de corte y la temperatura en la resistencia residual 

      García Núñez, Luis Miguel; Pinyol Puigmartí, Núria Mercè; Lloret Morancho, Antonio (International Centre for Numerical Methods in Engineering (CIMNE), 2022)
      Conference report
      Open Access
      La resistencia residual del suelo es un parámetro relevante para poder interpretar los deslizamientos y evaluar su potencial de reactivación y su evolución. Se han desarrollado numerosos estudios que han puesto de manifiesto ...
    • Effect of shear band thickness on the termo-hydromechanical coupled analysis of landslides 

      Pinyol Puigmartí, Núria Mercè; Alvarado Bueno, Mauricio; Alonso Pérez de Agreda, Eduardo (International Centre for Numerical Methods in Engineering (CIMNE), 2017)
      Conference report
      Open Access
      Thermal effects induced by the own motion of an unstable mass have been included in the analysis of the post-failure behavior in early works, most of them with the aim of looking for the causes of the rapid acceleration ...
    • Effect of temperature induced excess pore water pressure on the shaft bearing capacity of geothermal piles 

      Fuentes, Raul; Pinyol Puigmartí, Núria Mercè; Alonso Pérez de Agreda, Eduardo (Universitat Politècnica de Catalunya. Departament d'Enginyeria del Terreny, Cartogràfica i Geofísica, 2015-06-02)
      Conference report
      Open Access
    • Effect of temperature induced excess porewater pressures on the shaft bearing capacity of geothermal piles 

      Fuentes, Raúl; Pinyol Puigmartí, Núria Mercè; Alonso Pérez de Agreda, Eduardo (Elsevier, 2016-12)
      Article
      Open Access
      Changes in temperature in clays of low permeability typically induce excess porewater pressures. In the context of geothermal piles this effect has typically been overlooked since most installations have occurred in soils ...
    • Effect of temperature induced excess porewater pressures on the shaft bearing capacity of geothermal piles 

      Fuentes Sainz de la Maza, Raúl; Pinyol Puigmartí, Núria Mercè; Alonso Pérez de Agreda, Eduardo (Elsevier, 2016-12)
      Article
      Open Access
      Changes in temperature in clays of low permeability typically induce excess porewater pressures. In the context of geothermal piles this effect has typically been overlooked since most installations have occurred in soils ...
    • Evaluación del comportamiento de un talud a escala reducida durante mojado mediante imágenes 

      Morales Flauzín, Gerardo; Pinyol Puigmartí, Núria Mercè; Lloret Morancho, Antonio (2022)
      Conference report
      Open Access
      Actualmente existen diversos métodos para la medición de parámetros de interés en modelos físicos geotécnicos. Adicionalmente a las técnicas convencionales de medición basadas en la instalación de sensores, existen técnicas ...
    • Excavation-induced instabilities 

      Pinyol Puigmartí, Núria Mercè; Carluccio, Gaia di (CRC Press, 2019)
      Part of book or chapter of book
      Restricted access - publisher's policy
      The aim of this chapter is to show the capabilities of MPM to simulate geotechnical problems dealing with soil excavation. The stability of supported vertical excavation in elasto-plastic material is analyzed. Results are ...
    • Exploring rate and temperature effects on residual strength. Review and implications for a landslide case study 

      Pinyol Puigmartí, Núria Mercè; García Núñez, Luis Miguel; Lloret Morancho, Antonio; Alvarado, Mauricio (CRC Press, 2024)
      Conference report
      Open Access
      A large landslide immediate to a reservoir, identified in 2006, is the guiding case to discuss its triggering, namely a consequence of fast reservoir drawdown, and its post-failure response. The reactivation of the ...
    • Fast planar slides. A closed form thermo-hydro-mechanical solution 

      Pinyol Puigmartí, Núria Mercè; Alonso Pérez de Agreda, Eduardo (2010)
      Article
      Restricted access - confidentiality agreement
      Heat-induced eccess pore pressures on the failure surface of a planar slide have been calculated by solving the mass and heat balance equations on the shear band. The set of differential equations and the equation of ...
    • Footprints on the beach: visualising dilation-induced air entry 

      Parera Morales, Ferran; Siemens, Greg; McKellar, Megan; Pinyol Puigmartí, Núria Mercè; Alonso Pérez de Agreda, Eduardo; Take, W. Andy (2024-06)
      Article
      Open Access
      The dry fringe that appears beneath a footprint on a beach is a visual manifestation of dilation. Dilation causes the sand to attempt to increase in volume on shearing, resulting in negative pore pressure, and enhanced ...
    • Foundation of a gravity dam on layered soft rock: shear strength of bedding planes in laboratory and large "in situ" tests 

      Alonso Pérez de Agreda, Eduardo; Pinyol Puigmartí, Núria Mercè; Pineda Jiménez, Jubert Andrés (2014-12)
      Article
      Restricted access - publisher's policy
      A 100 m high gravity dam (Castrovido dam, Burgos, Spain) is founded on a soft Weald red claystone with inter-bedded sandstone strata. Claystone weathering was identified in vertical and horizontal profiles of water content ...
    • Foundation of a gravity dam on layered soft rock: shear strength of bedding planes in laboratory and large “in situ” tests 

      Alonso Pérez de Agreda, Eduardo; Pinyol Puigmartí, Núria Mercè; Pineda, Jubert Edgar (IOS Press, 2011)
      Conference report
      Restricted access - publisher's policy
      A 100 m high gravity dam (Castrovido dam, Burgos, Spain) is founded on a soft Weald red siltstone with interbedded sandstone strata. Dam stability is essentially controlled by the available shear strength of sedimentation ...
    • Highly expansive granular mixtures 

      Alonso Pérez de Agreda, Eduardo; Pinyol Puigmartí, Núria Mercè; Hoffmann Jauge, Christian (CRC Press, 2014)
      Conference report
      Restricted access - publisher's policy
      The paper describes the behavior of mixtures of highly compacted bentonite pellets. They are considered as a suitable impervious and tight barrier for nuclear waste disposal. Laboratory experiments aimed at identifying the ...
    • Image-based measurements of degree of saturation 

      Parera Morales, Ferran; Pinyol Puigmartí, Núria Mercè; Alonso Pérez de Agreda, Eduardo (E3S Web of Conferences, 2020)
      Conference report
      Open Access
      A method based on SWIR images is proposed for measuring the degree of saturation in soils. This method is especially suitable for use in experiments conducted in the facilities of a common geotechnical laboratory. The ...
    • Incorporating a microstructural state variable in constitutive modelling 

      Pinyol Puigmartí, Núria Mercè; Alonso Pérez de Agreda, Eduardo; Gens Solé, Antonio (2013)
      Conference report
      Restricted access - publisher's policy
      The selection of constitutive variables has been extensively discussed when modeling unsaturated soils. In general, suction and degree of saturation have been involved in the definition of constitutive variables. Recently, ...
    • Influence of temperature on residual strength of clayey soils 

      García Núñez, Luis Miguel; Pinyol Puigmartí, Núria Mercè; Lloret Morancho, Antonio; Soncco Halanocca, Edwin Aristides (Elsevier, 2023-09)
      Article
      Open Access
      This paper presents the influence of temperature on the residual strength by analyzing shearing tests carried out in a temperature- and velocity-controlled ring shear apparatus. Temperature was applied in steps of cooling ...
    • Influencia del desembalse en la estabilidad de una ladera: caso real 

      Pinyol Puigmartí, Núria Mercè; Alonso Pérez de Agreda, Eduardo; Corominas Dulcet, Jordi; Moya Sánchez, José (2013)
      Conference report
      Open Access
      Un aspecto crítico a controlar en la gestión de embalses es la velocidad de descenso de nivel de agua debido al riesgo de inestabilidades en las laderas que lo forman. Este artículo presenta el estudio realizado para conocer ...
    • Internal progressive failure in deep-seated landslides 

      Yerro Colom, Alba; Pinyol Puigmartí, Núria Mercè; Alonso Pérez de Agreda, Eduardo (2015-11)
      Article
      Open Access
      Except for simple sliding motions, the stability of a slope does not depend only on the resistance of the basal failure surface. It is affected by the internal distortion of the moving mass, which plays an important role ...
    • Introduction: advances in landslide understanding 

      Alonso Pérez de Agreda, Eduardo; Pinyol Puigmartí, Núria Mercè (2019-09)
      Article
      Open Access
      Landslide research covers an extremely wide range of aspects: from triggering mechanisms to response of the unstable mass after failure, including transport, deposition, and interaction with protective structures. Advances ...
    • 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
      Open Access
      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 ...